T3922-390-02_SG-Ins_Exc_EN

Behavioral Modeling Using CreoParametric 2.0

T3922-390-02

Authored and published using

For PTC In

ternal

Use O

nly

Copyright © 2012 Parametric Technology Corporation. All Rights Reserved.

Copyright for PTC software products is with Parametric Technology Corporation, its subsidiary companies (collectively “PTC”),and their respective licensors. This software is provided under written license agreement, contains valuable trade secrets andproprietary information, and is protected by the copyright laws of the United States and other countries. It may not be copiedor distributed in any form or medium, disclosed to third parties, or used in any manner not provided for in the software licensesagreement except with written prior approval from PTC.

UNAUTHORIZED USE OF SOFTWARE OR ITS DOCUMENTATION CAN RESULT IN CIVIL DAMAGES AND CRIMINALPROSECUTION.

User and training guides and related documentation from PTC is subject to the copyright laws of the United States and othercountries and is provided under a license agreement that restricts copying, disclosure, and use of such documentation. PTChereby grants to the licensed software user the right to make copies in printed form of this documentation if provided onsoftware media, but only for internal/personal use and in accordance with the license agreement under which the applicablesoftware is licensed. Any copy made shall include the PTC copyright notice and any other proprietary notice provided by PTC.Training materials may not be copied without the express written consent of PTC. This documentation may not be disclosed,transferred, modified, or reduced to any form, including electronic media, or transmitted or made publicly available by anymeans without the prior written consent of PTC and no authorization is granted to make copies for such purposes.

Information described herein is furnished for general information only, is subject to change without notice, and should not beconstrued as a warranty or commitment by PTC. PTC assumes no responsibility or liability for any errors or inaccuracies thatmay appear in this document.

For Important Copyright, Trademark, Patent and Licensing Information see backside of this guide.

For PTC In

ternal

Use O

nly

About PTC UniversityWelcome to PTC University!With an unmatched depth and breadth of product development knowledge, PTC University helpsyou realize the most value from PTC products. Only PTC University offers:• An innovative learning methodology – PTC’s Precision Learning Methodology is a provenproprietary approach used by PTC to develop and deliver learning solutions.

• Flexible Delivery Options – PTC University ensures you receive the same quality training programsregardless of the learning style. Our extensive experience, innovative learning techniques, andtargeted learning modules facilitate the rapid retention of concepts, and higher user productivity.

• Premier Content and Expertise – A thorough instructor certification process and direct access tothe PTC product development and PTC consulting organizations means that only PTC coursescan give you highly-qualified instructors, the most up-to-date product information and bestpractices derived from thousands of deployments.

• Global Focus – PTC University delivers training where and when you need it by providing over100 training centers located across 35 countries offering content in nine languages.

• Delivering Value – A role-based learning design ensures the right people have the right tools to dotheir jobs productively while supporting the organization’s overall performance goals.

The course you are about to take will expose you to a number of learning offerings that PTCUniversity has available. These include:• Instructor-led Training (ILT) – The ideal blend of classroom lectures, personal demonstrations,hands-on workshops, assessments, and post-classroom tools.

• Pro/FICIENCY – This Web-based, skills assessment and development-planning tool will helpimprove your skills and productivity.

• eLearning Libraries – 24/7 access to Web-based training that will compliment your instructor-ledcourse.

• Precision LMS – A powerful learning management system that will manage your eLearningLibrary and Pro/FICIENCY assessments.

PTC University additionally offers Precision Learning Programs. These are corporate learningprograms designed to your organization’s specific goals, current skills, desired competencies, andtraining preferences.Whatever your learning needs are, PTC University can help you get the most out of your PTCproducts.

For PTC In

ternal

Use O

nly

PTC Telephone and Fax NumbersNorth America• Education Services Registration– Tel: (888) 782-3773– Fax: (781) 370-5307

• Technical Support (Monday - Friday)– Tel: (800) 477-6435– Fax: (781) 707-0328

• License Management and Contracts– Tel: 877-ASK-4-PTC (877-275-4782)– Fax: (781) 707-0331

Europe• Technical Support, License Management, Training & Consulting– Tel: +800-PTC-4-HELP (00-800-78-24-43-57)

Asia• Please refer to http://www.ptc.com/services/training/contact.htm for contact information.In addition, you can access the PTC Web site at www.ptc.com. Our Web site contains the latesttraining schedules, registration information, directions to training facilities, and course descriptions.You can also reach technical support, and register for online service options such as knowledgebase searches, reference libraries, and documentation. You can also find general information aboutPTC, PTC Products, Consulting Services, Customer Support, and PTC Partners.

For PTC In

ternal

Use O

nly

Precision LearningPrecision Learning in the ClassroomPTC University uses the Precision Learning methodology to develop effective, comprehensive classmaterial that will improve the productivity of both individuals and organizations. PTC then teachesusing the proven instructional design principal of ‘Tell Me, Show Me, Let Me Do’:• Topics are introduced through a short presentation, highlighting the key concepts.• These key concepts are then reinforced by seeing them applied in the software application.• You then apply the concepts through structured exercises.After the course, a Pro/FICIENCY assessment is provided to enable you to assess yourunderstanding of the materials. The assessment results will also identify the class topics thatrequire further review.At the end of the class, you will either take a Pro/FICIENCY assessment via your PTC UniversityeLearning account, or your instructor will provide training on how to do this after the class.

Precision Learning After the ClassEach student that enrolls in a PTC class has a PTC University eLearning account. This account willbe automatically created if you do not already have one.As part of the class, you receive additional content in your account:• A Pro/FICIENCY assessment from the course content that generates a Recommended LearningReport based on your results.

• A Web-based training version of the course, based on the same instructional approach of lecture,demonstration, and exercise. The Recommended Learning Report will link directly to sectionsof this training that you may want to review.

Please note that Web-based training may not be available in all languages. The Web-based trainingis available in your account for one year after the live class.

For PTC In

ternal

Use O

nly

Precision Learning RecommendationsPTC uses a role-based training approach. The roles and the associated trainingare graphically displayed in a curriculum map. Curriculum maps are available fornumerous PTC products and versions in the training section of our Web site athttp://www.ptc.com/services/edserv/learning/paths/index.htm.

Please note that a localized map may not be available in every language and that the map above ispartial and for illustration purposes only.Before the end of the class, your instructor will review the map corresponding to the course youare taking. This review, along with instructor recommendations, should give you some ideas foradditional training that corresponds to your role and job functions.For P

TC Inter

nal Use

Only

Training AgendaDay 1Module 01 ― Introduction to the Behavioral Modeling Process

Module 02 ― Creating Measurement Features on Creo Parametric Models

Module 03 ― Creating Model Property Features on Creo Parametric Models

Module 04 ― Creating Analysis Features on Creo Parametric Models

Module 05 ― Creating User-Defined Analysis Features on Creo Parametric Models

Module 06 ― Conducting Design Studies and Optimizing Models

Module 07 ― Project

For PTC In

ternal

Use O

nly

Table of ContentsBehavioral Modeling Using Creo Parametric 2.0Creating Measurement Features on Creo Parametric Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Analyzing the Projected Surface Area of a Wing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Analyzing One-Sided Volume in a Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Creating Model Property Features on Creo Parametric Models . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Analyzing the Mass Properties of a Turbine Blade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Analyzing Clearance in the Hand Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Creating Analysis Features on Creo Parametric Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Analyzing Hand Pump Motion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Determining Hand Pump Water Volume Using Relation Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4Using Relation Analysis to Calculate Fuel Tank Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5Calculate a Carbrake Rotor Temperature Using an MS Excel Analysis . . . . . . . . . . . . . . . . . . . . . 4-7

Creating User-Defined Analysis Features on Creo Parametric Models . . . . . . . . . . . . . . . . . . . 5-1Creating a Field Point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Creating a Construction Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Creating a User-Defined Analysis Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Conducting Design Studies and Optimizing Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Applying Sensitivity Analysis to Increase Pump Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2Applying Sensitivity Analysis to Increase Fuel Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5Calculating the Lift Effect of Angling the Wing Using the Sensitivity Study . . . . . . . . . . . . . . . . . . 6-7Perform Feasibility Studies to Meet Design Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9Optimizing the Hand Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

For PTC In

ternal

Use O

nly

Module 2Creating Measurement Features on Creo Parametric

Models

© 2012 PTC Module 2 | Page 1

For PTC In

ternal

Use O

nly

Exercise 1: Analyzing the Projected Surface Area ofa WingObjectivesAfter successfully completing this exercise, you will be able to:• Create an area measurement analysis feature.

ScenarioYou are tasked with finding the lift of a prototype wing. In the past, this calculation was completedmanually using several pages in Microsoft Excel. However, this time you will complete this task usingseveral BMX features in Creo Parametric. In this exercise, you create an area analysis feature thatmeasures the projected area of the entire wing. As part of this analysis feature, you need to create aparameter that reports the projected area of the wing along its leading edge. The projected area ofthis parameter will change depending upon the wing's angle of attack, which alters the wing's lift.

Close Window Erase Not Displayed

Analysis\Wing_Area WING.PRT

Task 1: Create an area analysis feature that reports the projected area as a parameter.

1. Enable only the following Datum Display types:

2. Create an area measurement feature thatmeasures the projected area of the entire wingalong the RIGHT datum plane.• In the ribbon, select the Analysis tab.• Select Area from the Measure Typedrop-down menu in the Measure group.

• Select WING.PRT from the model tree toselect the entire model.

• In the Measure: Area dialog box, expand thedialog and setup layout.

• Within the setup layout, click in the Projectionfield. In the model tree, select datum planeRIGHT.

3. In the Measure dialog box, click MeasureOptions .

4. The Options dialog box appears. Select theShow Feature Tab check box and click OK.

5. In the Measure: Area dialog box, select theFeature tab. De-select the AREA check boxso the PROJ_AREA parameter is the onlyselection, as shown.

6. Click Save Analysis .• Select Make Feature.• In the name field, type AREA_PAS.• Click OK.

This completes the exercise.

Module 2 | Page 2 © 2012 PTC

For PTC In

ternal

Use O

nly

Exercise 2: Analyzing One-Sided Volume in a Fuel Tank

ObjectivesAfter successfully completing this exercise, you will be able to:• Create a one-sided volume analysis feature.• Create a parameter to track the volume of the unshelled model.• Create a parameter to track the volume of the shelled model.

ScenarioThe design specification of a fuel tank requires that it holds at least 0.35 liters of fuel. The designspecification also requires that the fuel tank is able to identify when it is half full. You are assigned toensure that the fuel tank meets these design specifications. In this exercise, you determine thevolume of the fuel tank. To properly estimate the volume, you create two BMX analysis features.The first feature calculates the volume of the solid model prior to the creation of the shell feature.The second feature calculates the volume of the shelled model. The difference of these twovolumes determines the volume of fuel that the tank can hold.


Analysis\Fuel-Tank_One-Sided-Volume FUEL_TANK.PRT

Task 1: Determine the solid volume of the fuel tank.

1. Disable all Datum Display types.

2. In the model tree, drag the Insert Indicatorbefore Shell id 2387.

The features after Shell id 2387 are finishingfeatures and they are a small part of theoverall volume of the fuel tank. Thesefeatures are removed from the fuel tankvolume calculation using Insert mode.

3. Create a datum plane that simulates the levelof fuel in the fuel tank.• Select datum plane TOP.• Click Plane from the Datum group.• Type –20 as the Translation value and clickOK.

4. Rename the datum plane to FLUID_LEVEL.

5. In the ribbon, select the Analysis tab.

6. Select Volume from the Measure Typedrop-down menu in the Measure group.• In the Measure: Volume dialog box, expandthe dialog and Setup layout.

• Within the Setup layout, click in the Planefield. In the model tree, select datum planeFLUID_LEVEL.

The arrow should point as shown.


For PTC In

ternal

Use O

nly

7. Determine the solid volume of the fuel tank.• In the Measure: Volume dialog box, clickMeasure Options .

• The Options dialog box appears. Select theShow Feature Tab check box and click OK.

• Select the Feature tab in the Volume dialogbox.– Type VOLUME as the parameter name.

8. Click Save Analysis .• Select Make Feature.• In the Name field, type VOL_SOLID.• Click OK.

9. Display the parameter volume in the model tree.

• Click Settings > Tree Columns in themodel tree.

• Select Feat Params from the Type drop-downlist.

• Type VOLUME as the Name and pressENTER.

• Click OK.• Note that the volume of fuel is approximately0.336 liters.

The units in the model tree volume columnare in millimeters. To convert millimetersto liters, you divide the original number by1,000,000.

10. Click Save from the Quick Access toolbar and click OK to save the model.

Task 2: Determine the shell volume of the fuel tank.

1. In the model tree, drag the Insert Indicatorafter Shell id 2387.

2. Select Volume from the Measure Typedrop-down menu in the Measure group.• In the Measure: Volume dialog box, expandthe dialog and Setup layout.

• Within the Setup layout, click in the Planefield. In the model tree, select datum planeFLUID_LEVEL.

• Click the arrow, if necessary.

The arrow should point as shown.


For PTC In

ternal

Use O

nly

3. Select the Feature tab.• Type VOLUME as the parameter name.

4. Click Save Analysis .• Select Make Feature.• In the Name field, type VOL_SHELL.• Click OK.

The difference between VOL_SOLID andVOL_SHELL provides the overall volume offuel. You can easily make this calculationusing a relation analysis feature.




For PTC In

ternal

Use O

nly


For PTC In

ternal

Use O

nly

Module 3Creating Model Property Features on Creo Parametric

Models


For PTC In

ternal

Use O

nly

Exercise 1: Analyzing the Mass Properties of a TurbineBlade

ObjectivesAfter successfully completing this exercise, you will be able to:• Create a mass property analysis feature.• Create a parameter to track the mass of a part.• Create a datum point at the center of gravity.

ScenarioYou are tasked with determining the suitability of reusing a turbine blade for a new turbine design. Inthe new design, the turbine blade will need to be lengthened. Prior to lengthening the blade, youneed to determine the distance from the center of gravity (COG) to the inner surface of the blade. Ifthe COG distance is less than half the total blade height, then the blade is less likely to exert shearstress on the final assembly. Therefore, in this exercise you need to create a datum point at thelocation of the center of gravity. You also need to track the mass of the part for future calculationsand you need to create a parameter to track this value.


Analysis\Turbine_Mass-Properties BLADE.PRT

Task 1: Create an analysis feature that creates a datum point at the center of gravity.

1. Enable only the following Datum Display type:.

2. Determine the system of units of BLADE.PRTso that you can use the proper density foraluminum.• Select BLADE.PRT in the model tree.• Right-click and select Info > Model.• Note that the part uses MKS (meters,kilograms, and seconds).

3. Minimize the browser.4. In the ribbon, select the Analysis tab.

5. Click Mass Properties from the ModelReport group.• Select Feature from the drop-down list.• Type COG as the name.

6. Type 2700 in the Density field, and click PreviewAnalysis .


For PTC In

ternal

Use O

nly

7. Select the Feature tab in the Mass Propertiesdialog box.• Clear the VOLUME and SURF_AREAparameter check boxes.

• Select the PNT_COG datum feature checkbox.

• Click Complete Feature .

8. Click Save from the main toolbar and clickOK to save the model.



For PTC In

ternal

Use O

nly

Exercise 2: Analyzing Clearance in the Hand Pump

ObjectivesAfter successfully completing this exercise, you will be able to:• Create a pairs clearance analysis feature.• Create a parameter to measure clearance.

ScenarioYou are part of a design team tasked with optimizing a hand pump to increase the volume of waterpumped per stroke. To complete this task, you need to create several BMX features. One of thefeatures has already been completed: a distance analysis feature that measures the height of thevalve from the bottom surface of the cylinder.In this exercise, you create a pairs clearance analysis feature that measures the distance betweenthe rod top and cylinder parts. This measurement is important because the design specificationrequires a clearance distance of at least 1/8 inch. Therefore, this measurement must be capturedas a parameter so it can be tracked.


Analysis\Hand-Pump_Clearance HAND_PUMP.ASM

Task 1: Create an analysis feature to measure clearance between the rod top and cylinder.

1. Disable all Datum Display types.2. In the ribbon, select the Analysis tab.3. In the Inspect Geometry group, select theGlobal

Interference drop-down list and select PairsClearance .• Select Feature from the drop-down list.• Type CLEARANCE as the name.

4. In the model tree, expand ROD_ASM.ASM andselect ROD_TOP.PRT.

5. Select CYLINDER.PRT.

6. Select the Feature tab.• Ensure that the CLEARANCE parameter is selected.• Click Complete Feature .




For PTC In

ternal

Use O

nly

Module 4Creating Analysis Features on Creo Parametric Models


For PTC In

ternal

Use O

nly

Exercise 1: Analyzing Hand Pump Motion

ScenarioYou are part of a design team tasked with optimizing a hand pump to increase the volume of waterpumped per stroke. To complete this task, you need to create several BMX features. Two of thefeatures have already been completed: a distance analysis feature that measures the height of thevalve from the bottom surface of the cylinder, and a pairs clearance analysis feature that measuresthe clearance distance between ROD_TOP.PRT and CYLINDER.PRT.In this exercise, you create a motion analysis feature that reports the maximum and minimum pointsof selected parameters. In the hand pump, you are interested in finding the minimum y-distance,maximum y-distance, and minimum clearance.


Analysis\Hand-Pump_Motion HAND_PUMP.ASM

Task 1: Create an analysis feature to find minimum y-distance, maximum y-distance, and mini-mum clearance as the mechanism runs through its range of motion.

1. Disable all Datum Display types.2. In the ribbon, select the Analysis tab.

3. Click Analysis from the Manage group.4. Type RANGE_OF_MOTION as the name and

press ENTER.

5. Select Motion Analysis as the type and clickNext.

6. Select DISTANCE_Y:VALVE_HEIGHTand CLEARANCE:CLEARANCE from theparameter list and click Run.


For PTC In

ternal

Use O

nly

7. Review and close the graphs.

8. Click Close in the Motion Analysis dialog box.9. Select NO to ensure that the MOTION_

RUNTIME parameter is not created.10. Select MIN_DISTANCE_Y from the parameter

list and select YES to create it.11. Select MAX_DISTANCE_Y from the parameter

list and select YES to create it.

12. Select MIN_CLEARANCE from the parameterlist and select YES to create it.

13. Click Complete Feature .



For PTC In

ternal

Use O

nly

Exercise 2: Determining Hand Pump Water VolumeUsing Relation Analysis

ScenarioYou are part of a design team tasked with optimizing a hand pump to increase the volume of waterpumped per stroke. To complete this task, you need to create several BMX features. Three of thefeatures have already been completed: a distance analysis feature that measures the height of thevalve from the bottom surface of the cylinder, a pairs clearance analysis feature that measures theclearance distance between ROD_TOP.PRT and CYLINDER.PRT, and a motion analysis featurethat measures minimum y-distance, maximum y-distance, and minimum clearance.In this exercise, you create a relation analysis feature that calculates the water volume based on themaximum y-distance and minimum y-distance.


Analysis\Hand-Pump_Volume HAND_PUMP.ASM

Task 1: Create an analysis feature that calculates total volume.


3. Click Analysis from the Manage group.4. Type VOLUME_CALC as the name and press

ENTER.

5. Select Relation as the type and click Next.

6. Type volume = (MAX_DISTANCE_Y:FID_RANGE_OF_MOTION - MIN_DISTANCE_Y:FID_RANGE_OF_MOTION) * pi.

7. Click Verify Relations .8. Click OK > OK > Complete Feature .

The radius of the cylinder is 1. Since r= 1, volume = π * length.



For PTC In

ternal

Use O

nly

Exercise 3: Using Relation Analysis to Calculate FuelTank Volume

ScenarioThe design specification of a fuel tank requires it to hold at least 0.35 liters of fuel. The designspecification also requires that the fuel tank is able to identify when it is half full. You are assigned toensure that the fuel tank meets these design specifications. In this exercise, you determine thevolume of the fuel tank. Two analysis features have been created: the first feature calculates thevolume of the solid model prior to the shell feature; the second feature calculates the volume ofthe shelled model. To calculate the volume of fuel that the tank can hold, you need to determinethe difference of these two volumes.Close Window Erase Not Displayed

Analysis\Fuel-Tank_Relation-Volume FUEL_TANK.PRT

Task 1: Create an analysis feature that calculates total volume.

1. Enable only the following Datum Display type:.

2. Click Analysis .3. Type VOL_FLUID as the name and press

ENTER.

4. Select Relation as the type and click Next.

5. Type volume = (volume:FID_VOL_SOLID -volume:FID_VOL_SHELL)/1000000.

6. Click Verify Relations .7. Click OK > OK > Complete Feature .

By dividing the right side of the equationby one million, you effectively convertmm3 to liters. Also note that theremaining features in the model tree donot significantly affect the volume of thefuel tank, so it is acceptable to includethem after the volume calculation.

8. Click Save from the main toolbar and click OK to save the model.

Task 2: Display the parameter volume in the model tree.

1. Drag feature VOL_FLUID in the model tree andplace it after feature VOL_SHELL.

2. Click Settings > Tree Columns... in themodel tree.

3. Select Feat Params from the Type list.4. Type VOLUME as the name and press ENTER.5. Click OK.


For PTC In

ternal

Use O

nly

Task 3: Experiment with the fluid level of the fuel tank by simulating a full fuel tank.

1. Select datum plane FLUID_LEVEL.2. Right-click and select Edit.3. Double-click the value 20, type 0 as the new

level, and press ENTER.

4. Click Regenerate Model in the QuickAccess toolbar.

5. Note that the total fuel capacity is 0.33 liters.

The fuel tank does not currently satisfyits design specification of holding 0.35liters of fuel. While we can randomly editdimensions to modify the fuel tank, a bettermethod is to use a BMX design study to finda dimension(s) that effectively increasesthe volume. This calculation can easily beaccomplished using sensitivity analysis.




For PTC In

ternal

Use O

nly

Exercise 4: Calculate a Carbrake Rotor TemperatureUsing an MS Excel Analysis (CHALLENGE)

ScenarioYou are assigned to review the braking system on the new 490x prototype car. In this review,you are to determine whether the current airflow across the rotor is sufficient to keep the rotortemperature around 600°. The process to determine rotor temperature involves determining thearea of a brake flute, number of brake flutes, area of air exit, and the area of the air intake. Thesevalues have been determined using Behavioral Modeling features. In this exercise, you input thesenumbers into a spreadsheet which calculates temperature.


Analysis\Car-Brake_Excel 4904000_BMX.ASM

Task 1: Calculate the rotor temperature using an MS Excel analysis feature.

1. Disable all Datum Display types.2. Add parameter NUMBER_OF_FLUTES:4904000_BMX and set it to cell B7.3. Add parameter BRAKE_FORCE:FORCE_ANALYSIS and set it to cell B5.4. Add parameter FLUTE_SURF_AREA:FLUTE_SURF_ANALYSIS and set it to cellB8 .5. Add parameter AIR_INTAKE_AREA:AIR_INTAKE_ANALYSIS and set it to cell B9.6. Add parameter AIR_EXIT_AREA:AIR_EXIT_ANALYSIS and set it to cell B10.

7. Configure cell A164 as the output cell and compute the temperature.8. Type ROTOR_TEMP as the output parameter.



For PTC In

ternal

Use O

nly


For PTC In

ternal

Use O

nly

Module 5Creating User-Defined Analysis Features on Creo

Parametric Models


For PTC In

ternal

Use O

nly

Exercise 1: Creating a Field Point

ScenarioYou are assigned to determine the angle at which a beam of light strikes a simulated wall. Toaccomplish this task, you need to investigate which areas of the reflector reflect perpendicular lightand which zones spread the light in other directions.Use a user-defined analysis feature to measure the angle between the light beam and a virtual wall.For the bulb and reflector, assume the angle of incidence equals the angle of reflection.


Analysis\Reflector_Field-Point REFLECTOR.PRT

Task 1: Create a field point for the user-defined analysis.

1. Enable only the following Datum Display type:

2. From the Datum group, click the Point flyoutmenu.

3. Click Field .4. Click the concave surface of REFLECTOR.PRT

to locate the point.

5. Click OK to complete the feature.




For PTC In

ternal

Use O

nly

Exercise 2: Creating a Construction Group

ScenarioYou are assigned to determine the angle at which a beam of light strikes a simulated wall. Toaccomplish this task, you need to investigate which areas of the reflector reflect perpendicular lightand which zones spread the light in other directions.Use a user-defined analysis feature to measure the angle between the light beam and a virtual wall.For the bulb and reflector, assume the angle of incidence equals the angle of reflection.


Analysis\Reflector_Construction-Group REFLECTOR.PRT

Task 1: Create a construction group for the user-defined analysis.

1. Enable only the following Datum Display types:.

2. Create a datum axis through FPNT2 and normalto the concave surface of the REFLECTOR.PRT.

3. Create a datum plane named LIGHT_PLANEthrough PNT0 and the axis created in theprevious step.

4. Create a sketched curve to simulate a beam of light leaving the bulb (PNT0), reflecting off theconcave surface, and striking the simulated wall (DTM1).

• Click Sketch from the Datum group.• View datum plane SIDE as the Sketch Orientation Reference and select Right as theOrientation.

• Click Flip > Sketch from the Sketch dialog box.

5. Click Sketch View from the In Graphicstoolbar.

6. Click References from the setup group.7. Select PNT0, FPNT2, the datum axis, and

datum plane DTM1 as Sketcher references andclick Close.

8. Sketch the light beam so that the angle ofincidence equals the angle of reflection, asshown.

Note the use of the two centerlines,Sketcher points, and constraints.


For PTC In

ternal

Use O

nly

9. Click OK from the Sketcher toolbar.10. Rename the sketched curve to LIGHT_BEAM.

11. Create an analysis feature to measure the angleat which the light beam strikes the simulatedwall. That is, where the sketch, LIGHT_BEAMhits the datum plane DTM1• Switch to the Analysis tab, from the Measuregroup drop-down click Angle .

12. Click Save Analysis .• Select Make Feature.• In the name field, type LIGHT_ANGLE.• Click OK.

13. Create a local group for the construction group.• Press CTRL and select FPNT2 , A_2, LIGHT_PLANE, LIGHT_BEAM, and LIGHT_ANGLEin the model tree.

• Right-click in the model tree and select Group.• Rename the group to LIGHT_GROUP.




For PTC In

ternal

Use O

nly

Exercise 3: Creating a User-Defined Analysis Feature

ScenarioYou are assigned to determine the angle at which a beam of light strikes a simulated wall. Toaccomplish this task, you must determine which areas of the reflector reflect perpendicular light andwhich zones spread the light in other directions.Use a user-defined analysis feature to measure the angle between the light beam and a virtual wall.For the bulb and reflector, assume that the angle of incidence equals the angle of reflection.


Analysis\Reflector_User-Defined REFLECTOR.PRT

Task 1: Create a user-defined analysis feature.

1. Disable all Datum Display types.2. Select the Analysis tab. Select the

User-Defined Analysis from the Customgroup.• Note that the construction group,LIGHT_GROUP, is automatically selected.

• Note that the parameter, ANGLE, isautomatically selected.

3. Click Compute.

4. Click Add Feature from the User-Defined Analysis dialog box.5. Type UDA_LIGHT as the name in the message window and press ENTER.6. Click Close to close the User-Defined Analysis dialog box.




For PTC In

ternal

Use O

nly


For PTC In

ternal

Use O

nly

Module 6Conducting Design Studies and Optimizing Models


For PTC In

ternal

Use O

nly

Exercise 1: Applying Sensitivity Analysis to IncreasePump Volume

ScenarioYou are part of a design team tasked with optimizing a hand pump to increase the volume of waterpumped per stroke. To complete this task, you create several BMX features. Four of the featureshave already been completed: a distance analysis feature that measures the height of the valvefrom the bottom surface of the cylinder, a pairs clearance analysis feature that measures theclearance distance between ROD_TOP.PRT and CYLINDER.PRT, a motion analysis feature thatmeasures minimum y-distance, maximum y-distance, and minimum clearance, and a relationanalysis feature that calculates the pumping volume.


Analysis\Hand-Pump_Sensitivity HAND_PUMP.ASM

Task 1: Perform a sensitivity analysis to determine if pump volume is sensitive to changes in linklength.

1. Disable all Datum Display types.

2. In the model tree, click Settings > TreeFilters... .

3. Enable Features in the Model Tree Items dialogbox and click OK.

4. In the ribbon, select the Analysis tab.

5. Click Sensitivity Analysis from the DesignStudy group.

6. Click Dimension.• Select LINK.PRT from the graphics windowand select 8.

7. Run the sensitivity analysis.• Type 6 as the minimum variable range andtype 10 as the maximum variable range.

8. Click Parameters to Plot.• Select VOLUME:VOLUME_CALC and clickOK.


For PTC In

ternal

Use O

nly

9. Click Compute.

The volume ranges approximately +/-7%, which indicates that the volume issomewhat sensitive to change in linklength.

10. Click Close from the Sensitivity dialog box.

Task 2: Perform a sensitivity analysis to determine if pump volume is sensitive to changes inhandle length.


2. Click Dimension.• Select HANDLE.PRT from the graphicswindow and select 20.

3. Ensure that the minimum variable range is 18and ensure that the maximum variable range is22.

4. Ensure that VOLUME:VOLUME_CALC isconfigured as the parameter to plot.

5. Click Compute.

The volume ranges approximately +/-10% from the original value, whichindicates that the volume is somewhatsensitive to change in handle length.



For PTC In

ternal

Use O

nly

Task 3: Perform a sensitivity analysis to determine if pump volume is sensitive to changes inhandle pin location.


2. Expand the HANDLE.PRT node in the modeltree.

3. Click Dimension.• Select Hole id 153 in the model tree andselect 7.

4. Type 5 as the minimum variable range and type10 as the maximum variable range.

5. Ensure that VOLUME:VOLUME_CALC isconfigured as the parameter to plot.

6. Click Compute.

The volume increased approximately150% from the minimal range value,which indicates that the volume isvery sensitive to change in handle pinlocation.




For PTC In

ternal

Use O

nly

Exercise 2: Applying Sensitivity Analysis to IncreaseFuel Capacity

ScenarioThe design specification of a fuel tank requires it to hold at least 0.35 liters of fuel. The designspecification also requires that the fuel tank be able to identify when it is half full. You are assignedto ensure that the fuel tank meets these design specifications. In this exercise, you determine howto increase the volume of the fuel tank. Three analysis features have been created: the first featurecalculates the volume of the solid model prior to the shell feature, the second feature calculatesthe volume of the shelled model, and the third feature calculates the difference between the initialtwo features to provide the volume of fuel that the tank can hold.


Analysis\Fuel-Tank_Sensitivity FUEL_TANK.PRT

Task 1: Perform a sensitivity analysis to determine if fuel capacity can be increased.



4. Run the sensitivity analysis.

• Click Dimension.• Select BASE_PROTRUSION from the modeltree, and select 59.

5. Type 59 as the minimum variable range and type65 as the maximum variable range.

6. Click Parameters to Plot.• Select VOLUME:VOL_FLUID and click OK.


For PTC In

ternal

Use O

nly

7. Click Compute.

When dimension d5 = 61, the volume isapproximately 0.350 liters.




For PTC In

ternal

Use O

nly

Exercise 3: Calculating the Lift Effect of Angling theWing Using the Sensitivity Study

ScenarioYou are tasked with finding the lift of a prototype wing. In the past, this calculation was completedmanually using several pages in Microsoft Excel. However, now you will complete this task usingseveral BMX features in Creo Parametric. Two of the features have already been created: the firstfeature determines the projected area of the wing that affects lift. The second feature uses theprojected area parameter to determine the lift of the wing at a specified angle of attack. In thisexercise, you perform a sensitivity analysis to determine how changing the angle of attack affectsthe wing's lift characteristics.


Analysis\Wing_Sensitivity WING.PRT

Task 1: Perform a sensitivity analysis to determine lift as a function of angle of attack.



• Click Dimension.• Select Protrusion id 39 and select 10°.

4. Type 0.0 as the minimum variable range andtype 20.0 as the maximum variable range.

5. Click Parameters to Plot.• Press CTRL and select PROJ_AREA:AREA_PAS and LIFT:LIFT_CALC.

• Click OK.


For PTC In

ternal

Use O

nly

6. Type 21 as the number of steps and clickCompute.




For PTC In

ternal

Use O

nly

Exercise 4: Perform Feasibility Studies to Meet DesignSpecifications

ScenarioThe design specification of a fuel tank requires it to hold at least 0.35 liters of fuel. The designspecification also requires that the fuel tank be able to identify when it is half full. You are assignedto ensure that the fuel tank meets these design specifications. In this exercise, you increase thevolume of the fuel tank. Three analysis features have been created: the first feature calculates thevolume of the solid model prior to the shell feature; the second feature calculates the volume ofthe shelled model; and the third feature calculates the difference between the initial two features toprovide the volume of fuel that the tank can hold.


Analysis\Fuel-Tank_Feasibility FUEL_TANK.PRT

Task 1: Perform a feasibility design study to increase fuel capacity to 0.350 liters.


3. Click Feasibility/Optimization from theDesign Study group.

4. Select Feasibility and click Add... within designconstraints.• Select VOLUME:VOL_FLUID from theParameter drop-down list.

• Select the Set option.• Type 0.350 as the Value.• Click OK to add the design constraint.

5. Click Cancel to stop adding design constraints.

6. Click Add Dimension... within design variables,select BASE_PROTRUSION, and select 59.

7. Type 59 as the minimum and type 65 as themaximum.


For PTC In

ternal

Use O

nly

8. Click Compute and click Close > Confirm toaccept the results.

A feasible solution was found.


Task 2: Perform a feasibility design study to place a half full indicator line.

1. Click Feasibility/Optimization from theDesign Study group.

2. Edit the design constraint to VOLUME:VOL_FLUID=0.175 and press ENTER.

Note that 0.175 = 0.350/2.

3. Configure the design study preferences.• Click Options > Preferences... and selectGraph Variables.

4. Select the Run tab.• Type 0.001 as the Convergence %.• Click OK.

5. Delete the design variable.• Select d5:FUEL_TANK and click Delete.

6. Click Add Dimension... within design variables.• Select FLUID_LEVEL from the model tree.• Select 0.

7. Type 0 as the minimum and type 60 as themaximum.


For PTC In

ternal

Use O

nly


The tank is half full when datum planeFLUID_LEVEL is 34.34mm offset fromdatum plane TOP.



For PTC In

ternal

Use O

nly

Exercise 5: Optimizing the Hand Pump

ScenarioYou are part of a design team tasked with optimizing a hand pump to increase the volume of waterpumped per stroke. To complete this task, you create several BMX features. Four of the featureshave already been completed: a distance analysis feature that measures the height of the valvefrom the bottom surface of the cylinder, a pairs clearance analysis feature that measures theclearance distance between ROD_TOP.PRT and CYLINDER.PRT, a motion analysis feature thatmeasures minimum y-distance, maximum y-distance, and minimum clearance, and a relationanalysis feature that calculates the pumping volume.


Analysis\Hand-Pump_Optimization HAND_PUMP.ASM

Task 1: Optimize the water volume for the hand pump using the handle pin location as a designvariable.

1. Disable all Datum Display types.2. In the ribbon, select the Analysis tab.3. Perform the optimization design study.

• Click Feasibility/Optimization from theDesign Study group.

4. Type MAX_VOLUME as the name.5. Select Maximize as the goal and select

VOLUME:VOLUME_CALC as the parameter.

6. Click Add... within design constraints.• Select CLEARANCE:CLEARANCE andselect >= .

• Select Set and type 0.25 .• Click OK to add the design constraint.

7. Click Cancel to stop adding design constraints.

8. Click Add Dimension... within design variables.• Select LINK.PRT from the graphics windowand select 8.

9. Select HANDLE.PRT from the graphics windowand select 20.


For PTC In

ternal

Use O

nly

10. In the model tree, click Settings > TreeFilters.

11. Enable Features in the Model Tree Items dialogbox and click OK.

12. Expand the node of HANDLE.PRT in the modeltree.

13. Select Hole id 153 in the model tree and select7.

14. For length:LINK, type 6 as the minimum andtype 10 as the maximum.

15. For length:HANDLE, type 18 as the minimumand type 22 as the maximum.

16. For pin:HANDLE, type 5 as the minimum andtype 10 as the maximum.


Your results may not exactly matchthe results shown in the figures, butthe optimization study should besuccessful.



For PTC In

ternal

Use O

nly


For PTC In

ternal

Use O

nly

Module 7Project


For PTC In

ternal

Use O

nly

Objective 1: Project

ScenarioCrankshafts must be balanced to operate reliably. You are assigned to balance a crankshaft so thatits center of gravity lies along the axis of rotation. You then minimize the overall mass of the part.


Projects\Behavioral_Modeling CRANKSHAFT.PRT

Task 1: Analyze the crankshaft to display a datum point at the center of gravity.

1. Disable all Datum Display types.2. Create an analysis feature that displays a datum

point at the center of gravity.• Name the analysis feature MASS_PROPS.• Create the MASS parameter.• Create a datum point at the center of gravityand name it COG.

• Do not create any other parameters or datumfeatures in this analysis feature.

3. Orient the model to the RIGHT view.

Click Named Views from the InGraphics toolbar and select RIGHT to orientto the right view.

Task 2: Create an analysis feature to determine the distance from the center of gravity to theaxis of rotation and display the distance in the model tree.

1. Create an analysis feature that calculates the distance from COG to the CRANK axis.• Name the analysis feature COG_DISTANCE.• Create a parameter named DISTANCE that reports the distance between the center ofgravity and the crank axis.

• Do not create any other parameters or datum features in this analysis feature.

2. Display the parameter DISTANCE as a columnin the model tree.

Task 3: Perform a sensitivity analysis to determine how editing dimensions affects the locationof the center of gravity.

1. Orient to the standard orientation.2. Perform a sensitivity analysis on the dimension

shown on the LOBE sketched curve against theDISTANCE:COG_DISTANCE parameter.


For PTC In

ternal

Use O

nly

3. Compute with a variable range where theminimum is set to 1.0 and the maximum is setto 3.0.

4. Note that editing this dimension had very littleimpact on the COG location.

5. Perform a sensitivity analysis on the dimensionshown on the LOBE sketched curve against theDISTANCE:COG_DISTANCE parameter.


7. Note that editing this dimension impacted theCOG location.

8. Perform a sensitivity analysis on the dimensionshown on the LOBE sketched curve against theDISTANCE:COG_DISTANCE parameter.


10. Note that editing this dimension impacted theCOG location.


For PTC In

ternal

Use O

nly

11. Perform a sensitivity analysis on thedatum plane LOBE_FRONT against theDISTANCE:COG_DISTANCE parameter.


13. Note that editing this dimension had a slightimpact on the COG location, but the crankshaftlobes became too thin at the lower range values.

Which dimension(s) would you select when performing feasibility and optimization designstudies?

Answer: Either of the 25 dimensions would be good choices for feasibility andoptimization design studies from a sensitivity analysis standpoint. However, you shouldselect the lower 25 dimension (d119) because you simply decrease this dimension tomove the COG. This is advantageous because the part should still fit in its assembly.The other 25 dimension (d20) requires significant increasing in order to move the COG,and that would cause fit issues when the part is assembled.

Task 4: Perform a feasibility design study to determine whether the center of gravity can bemoved along the crank axis.

1. Perform a feasibility design study to determineif Creo Parametric can make COG_DISTANCE= 0.

2. Ensure that d119's variable range minimum isset to 21.0 and the maximum is set to 24.0.

3. Ensure that you graph the variables and constraints.

Click Options > Preferences in the Optimization/Feasibility dialog box.


For PTC In

ternal

Use O

nly

4. Note that the distance was driven toapproximately 0 and that dimension d119decreased approximately to 22 mm.

5. Click Undo and proceed to the optimization design study.

Task 5: Optimize the crankshaft to move the center of gravity to the crank axis.

1. Perform an optimization design study to determine if Creo Parametric can makeDISTANCE:COG_DISTANCE = 0 and minimize mass.

Do not use the feasibility study as the starting point for this design study. Start anew design study.

2. Ensure that d3's variable range minimum is setto 12.0 and the maximum is set to 16.0.

3. Ensure that d119's variable range minimum isset to 21.0 and the maximum is set to 24.0.


For PTC In

ternal

Use O

nly

4. Ensure that you graph the goal, variables, andconstraints.

5. Note that d3 = 12.6 and d119 = 22.15.6. Note that the distance was driven to approximately 0 and mass was decreased ~20%.7. Confirm the changes to the model.


For PTC In

ternal

Use O

nly

8. Orient the model to the RIGHT view.

This completes the objective.


For PTC In

ternal

Use O

nly

CopyrightBehavioral Modeling Using Creo Parametric 2.0Copyright © 2012 Parametric Technology Corporation and/or Its Subsidiary Companies. All Rights Reserved.User and training guides and related documentation from Parametric Technology Corporation and its subsidiary companies (collectively "PTC") are subject to the copyright laws of the United States andother countries and are provided under a license agreement that restricts copying, disclosure, and use of such documentation. PTC hereby grants to the licensed software user the right to make copiesin printed form of this documentation if provided on software media, but only for internal/personal use and in accordance with the license agreement under which the applicable software is licensed. Anycopy made shall include the PTC copyright notice and any other proprietary notice provided by PTC. Training materials may not be copied without the express written consent of PTC. This documentationmay not be disclosed, transferred, modified, or reduced to any form, including electronic media, or transmitted or made publicly available by any means without the prior written consent of PTC and noauthorization is granted to make copies for such purposes.Information described herein is furnished for general information only, is subject to change without notice, and should not be construed as a warranty or commitment by PTC. PTC assumes no responsibilityor liability for any errors or inaccuracies that may appear in this document.The software described in this document is provided under written license agreement, contains valuable trade secrets and proprietary information, and is protected by the copyright laws of the UnitedStates and other countries. It may not be copied or distributed in any form or medium, disclosed to third parties, or used in any manner not provided for in the software licenses agreement except withwritten prior approval from PTC.UNAUTHORIZED USE OF SOFTWARE OR ITS DOCUMENTATION CAN RESULT IN CIVIL DAMAGES AND CRIMINAL PROSECUTION. PTC regards software piracy as the crime it is, and we viewoffenders accordingly. We do not tolerate the piracy of PTC software products, and we pursue (both civilly and criminally) those who do so using all legal means available, including public and privatesurveillance resources. As part of these efforts, PTC uses data monitoring and scouring technologies to obtain and transmit data on users of illegal copies of our software. This data collection is notperformed on users of legally licensed software from PTC and its authorized distributors. If you are using an illegal copy of our software and do not consent to the collection and transmission of suchdata (including to the United States), cease using the illegal version, and contact PTC to obtain a legally licensed copy.Important Copyright, Trademark, Patent, and Licensing Information: See the About Box, or copyright notice, of your PTC software.UNITED STATES GOVERNMENT RESTRICTED RIGHTS LEGENDThis document and the software described herein are Commercial Computer Documentation and Software, pursuant to FAR 12.212(a)-(b) (OCT’95) or DFARS 227.7202-1(a) and 227.7202-3(a) (JUN’95),and are provided to the US Government under a limited commercial license only. For procurements predating the above clauses, use, duplication, or disclosure by the Government is subject to therestrictions set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software Clause at DFARS 252.227-7013 (OCT’88) or Commercial Computer Software-Restricted Rights atFAR 52.227-19(c)(1)-(2) (JUN’87), as applicable. 01012012Parametric Technology Corporation, 140 Kendrick Street, Needham, MA 02494 USA

PRINTING HISTORYDocument No. Date DescriptionT3922-390-02 05/25/2012 Initial Printing of:

Behavioral Modeling Using Creo Parametric 2.0Order Number DT-T3922-390-02Printed in the U.S.A

For PTC In

ternal

Use O

nly

Documents

T3922-390-02_SG-Ins_Exc_EN