General Pre & Post -processor for Finite Element Analysis ...admin.midasuser.com/UploadFiles2/84/FXP_Modeler_2012.pdf · graphic user interface providing a complete FEA environment

FX+ Modeler General Pre & Post-processor for Finite Element Analysis

2/49 FX+ Modeler

Overview

Overview

Geometry Modeling

Mesh Generation

LBC & Analysis

02

14

28

45

Advanced Nonlinear and Detail Analysis Program

3/49

FX+ Modeler

About FX+

Convenience

Rapidity

Accuracy

Productivity

Overview

“FX+ Modeler is a general purpose, FEA (Finite Element Analysis) pre-processor with state-of-the-art Windows based graphic user interface providing a complete FEA environment

for linking geometry modeling and meshing…”


4/49

Framework

Work Window

Output Window

Property Window

Works Tree

Main Menu Tabbed Toolbar

Developed based-on Task-oriented Design Paradigm

Context Menu

Table Window

Overview


5/49

Works Tree

F2: Rename Del: Delete

Drag & Drop Move / Append

Context Menu

Overview

FXP’s Works Tree displays geometry, mesh, analysis data and result data in a tree structure as Windows Explorer.

Works Tree provides its own context menu and supports the convenient model management. Works Tree changes its form depending on the working mode.


6/49

Property Window

Information for Geometry Information for Mesh Post Control Panel

Editable Items

Overview

FXP’s Property Window provides the various information of the selected item and allows the change of the basic properties such as name, color, etc.

In post-processing mode, Property Windows is used as a control panel of the post-processing options.


7/49

Task-oriented User Interface

Location Entry Field • Mouse Snap: • Keyboard Input: Mathematical expressions can be used. <Ex> 100/2*sin(40)

Drawing Type Selection Dynamic Instruction for Current Input

Figure-on/off Button

Method List

Command/Method-sensitive Figures

Overview


8/49

Graphic Display - Geometry

Shading Shading with Edge Shading + Transparency

Bounding Box

Mouse-out Mouse-in

Wireframe

Overview


9/49

Graphic Display - Mesh

Shading

Feature Edge

Shading + Shrink Wireframe

Feature Edge (Geotechnical Model)

Overview


10/49

Virtual Mesh Transformation

Virtual Transformation (Translation, Rotation, Scaling) by Mouse Dragging

Shaver (Component Assy.)

Overview


11/49

Selection Method

Select

Unselect

Unselect All Selection Filter

Include Intersected

ID

Displayed

Query Pick

Polyline

Polygon

Circle

Pick / Window

Polyline Selection Circle Selection Polygon Selection

Overview


12/49

Selection Method

ID Selection (Node/Element) Query Pick Selection

Detected Entity List

Displayed Selection

Overview


13/49

Data Exchange

IGES Model

Solid Mesh

Overview

Import (Geometry/Mesh)

- STEP, IGES, Parasolid

- AutoCAD DXF (2D)

- STL (Mesh) Export (Geometry/Mesh)

- STEP, IGES

- STL (Mesh) Import/Export (Analysis Data)

- MIDAS/Civil, MIDAS/Gen

- Nastran, Ansys, ABAQUS, etc

- Neutral File (Pre: ASCII, Post: Binary)

Standards for Data Exchange

STEP (STandard for the Exchange of Product Model Data)

IGES (Initial Graphics Exchange Specification)

STL (STereo Lithography) – De facto standard for RP

14/49 FX+ Modeler

Geometry Modeling

Overview

Geometry Modeling

Mesh Generation

LBC & Analysis

02

14

28

45


15/49

• Line, Polyline • Arc, Circle • Polygon • B-Spline • Tunnel Section • Fillet, Chamfer • Trim, Extend • Intersect • Offset, Tangent • Break, Merge

…

Geometry Modeling

Curve Surface Solid Advanced Modeling

• Plane Patch • Coons Patch • NURBS Patch • Grid Patch • Vertex Patch • Fillet, Chamfer • Sew, Fuse • Trim, Divide • Extend • Imprint

…

Geometry Modeling

Advanced modeling functions can be used in surface & solid modeling.

• Box, Wedge • Cylinder, Cone • Sphere, Torus • Trim, Divide • Embed • Boolean Op.

(Fuse, Cut, …) • Stitch Surfaces

…

• Extrude • Revolve • Loft • Sweep • Fillet, Chamfer • Offset, Draft • Shelling • Local Prism • Check, Repair • Transformation

…


16/49

Curve Modeling

Generation

B-Spline

Arc

Line

Circle

Rectangle

Polyline

Polygon

Profile

• Line • Arc • Circle • Ellipse • Parabola • Hyperbola

• B-Spline • Polyline • Rectangle • Polygon • Profile • Helix

• On-surface Curve • Shortest Path Line • Surface Intersection • Offset Curve • Extrude Vertex • Tangent Line

• Fillet / Chamfer • Trim / Extend • Merge / Break • Intersect • Coincide Ends • Make Wire

Modification

B-Spline

Polyline

Tunnel Section

Line

Geometry Modeling


17/49

Surface Modeling

Virtual Grid (M X N)

Elevation

Grid Patch

NURBS Patch

Arbitrary Curves

Vertex Patch

Vertex Cloud (Scanned Points)

Co-planar Curves

Plane Patch

2~4 Curves

Coons Patch

Geometry Modeling


18/49

Solid Modeling

Trim

Divide

Boolean Operation

A

B

Fuse (A ∪ B)

Cut (A - B)

Common (A ∩ B)

+

Divide

Symmetric Model

Geometry Modeling


19/49

Advanced Modeling

Generation

Profile

Guide Curve

Sweep

Profiles

Loft

Profile

Revolve

Profile

Extrude

Geometry Modeling


20/49

Advanced Modeling

Offset

Modification

Trim 2 Surfaces

Chamfer

Fillet

Shell

Local Prism

Profiles (2 Circle)

Fuse: Defined Height

Cut: Through-all

Geometry Modeling


21/49

Geometry Healing

Work Window Static Window

U-V Window Message Window

Geometry Healer

Topological Validity Analysis

Geometry Modeling

Specialized Module for Geometry Healing


22/49

Geometry Repairing

Free Edge & Gap

Sew & Fill Gap

Analyze & Repair

Geometry Modeling

Analyze / Heal (Fix Corrupted Geometry) Topological Validity, Free Boundaries Fix Missing Seam-edge Fix Orientation: Edge, Wire, Face Fill: Gaps, Holes Sew, Split Upgrade: Continuity, Converting

Repair (Modify for Meshing) Divide: Edges, Faces Merge: Faces, Edges, Face-Edges, Edges Fix Small Edges/Faces, Split Revolved Faces Remove: Floating Objects, Faces, Internal Wires, Sub-shapes Convert to NURBS Geometry to Canonical Geometry (Analytical Form) Convert: Wire to Face, Shell to Solid, Solid to Shell


23/49

Geometry Repairing

Merge Surfaces

Geometry Modeling


24/49

Geometry Repairing

Merge Sub-Edges

Geometry Modeling


25/49

Geometry Repairing

Invalid Topology (Unshadable Face)

Check & Fix Topology Split Surface by Continuity

Geometry Modeling


26/49

Check Geometry

Check Shape

Check/Remove Duplicate

Geometry Modeling

Check Shape Free Edge Manifold Edge Non-manifold Edge Short Edge Sliver Face

Check/Remove Duplicate Vertex Edge Face


27/49

Geometry Modeling

Flexible Convenient Accurate

Advantage of Geometry-based Modeling Approach

Using the advanced geometric modeling functions, especially surface and solid modeling functions, modeling various real and complex terrain and/or stratum geometries can be accomplished very easily !

Compared to manual operations, geometric modeling functions require fewer inputs. It does not require tedious information input like nodal coord’s, element connectivity, etc. It just needs the least real geometric information !

Using the geometric modeling functions, the complex geometric operations like intersecting and dividing the free-form surfaces can be performed in a matter of seconds. Exact solutions are obtained with no hassle !

1 2 3

Geometry Modeling

28/49 FX+ Modeler

Geometry Modeling

Overview

Geometry Modeling

Mesh Generation

LBC & Analysis

02

14

28

45


29/49

• Extrude • Revolve • Project • Fill • Sweep

• Geometry • Element • Node

• Solid • Surface • k-Curve Area • k-Face Volume • 4-Node Area

…

• Solid • Surface • Edge • Planar Area • 4-Curve Area • 2D → 3D

• Quadrilateral • Combined • Triangle

Mesh Generation

Auto Map Protrude Manipulation

Object Type

Mesh Generation

Type

• Create • Extract • Connection • Change Para. • Smooth • Divide • Check • Quality • Merge • Transform

…


30/49

Mesh Generation Mesh Generation

Loop Mesher Direct Surface Mesher based on Looping Algorithm

Delaunay Mesher Indirect Surface Mesher based on Delaunay Triangulation

Grid Mesher Hybrid Surface Mesher based on Modified Grid-based Approach

Tetra Mesher Solid Mesher based on Delaunay Tetrahedralization & Advancing Front

Map Mesher Structured Surface/Solid Mesher based on Transfinite Interpolation


31/49

Automatic Surface Meshing

Regularity Uniformity

Boundary Sensitive

Orientation Insensitive

Sizing Control (< 1/2)

Internal Curve/Point

Loop Mesher

Delaunay Mesher

Grid Mesher

Delaunay Mesher

Impulsive Point

Grid Mesher Loop Mesher

Mesh Generation


32/49

Automatic Surface Meshing

Normal Mesh

Pattern Mesh

Mesh Preference Final Mesh (after Smoothing)

Offset Elements

Object Surface

Mesh Generation

FXP’s surface meshers generate offset elements near boundary for best quality FXP provides a number of controls to manipulate mesh pattern & density, and generates optimum

meshes required in practice.


33/49

Automatic Solid Meshing

Smooth Transition

Smooth Transition

Mesh Generation

FXP’s Tetra Mesher auto-generates tetrahedral solid mesh with variable sizes in smooth transition. (200,000 Tetra’s/min)

FXP’s Tetra Mesher is capable of including holes, curves and points that are present in/on solids.


34/49

Mapped Mesh Generation

Hull of Small Ship (Surface Mesh)

k-sided Areas (Simply-connected)

Pipe Junction

Cargo Carrier

Mesh Generation

FXP’s Map Mesher generates structured (regular & orthogonal) mesh both in surfaces and solids.


35/49

Mapped Solid Meshing

Full Mapping

Auto+Map

Clipped View

Geometry

Multiple Solids

Auto-mesh (2D)

Mesh Generation

FXP’s Solid Map Mesher generates hexa and/or penta mesh in simple solids by full mapping or

combination (auto+map).


36/49

Size Control

Linear & Symmetric Seeding

Fine Coarse Coarse

Division

Normal Refinement (50%) Refinement (150%)

Fine Mesh

Coarse Mesh

Smooth Transition

Mesh Generation

FXP provides various size control methods, uniform size, division, linear grading (size & ratio and

symmetry option) and refinement option.


37/49

Size Control

Normal Seeding (Uniform Size)

Adaptive Seeding

θ L

h

Angle Ratio: sin θ

Deflection Ratio: h/L

Adaptive Seeding

Mesh Generation

FXP provides adaptive seeding function based on user-specified mesh size and geometric

characteristics (curvature and feature).


38/49

Element-based Meshing

STL (Stereo Lithography)

2D Mesh Imported from STL Data

Regenerated Mesh

Mesh Generation


39/49


3D Scanned Data Tria: 130000

Decimated Mesh (Reduction Factor: 0.2) Final Mesh

3D Scanned Data Tria: 49,998

(RapidForm Sample)

Decimated Mesh Tria: 7,498

(Reduction Factor: 0.2)

Final Mesh Tria: 8,938

STL

STL FEA Mesh

FEA Mesh

Mesh Generation


40/49


Resolved Mesh

Invalid NURBS (Uneven knot vectors)

Sliver Faces

Generated Mesh (Parametric Meshing)

Resolved Mesh

Singular Vertex Poor Mesh

Mesh Generation


41/49

Mesh Protrusion

Extrude thru Node Sequence (Curve→2D)

Simulate

Section

Fill (Curve→2D)

Extrude (2D→3D) Non-uniform Offset (2@25, 2@50)

2D Base Mesh Linear Extrusion

Revolve (2D→3D)

Mesh Generation


42/49

Mesh Protrusion

Fill (2D→3D)

Top Bottom

Same Topology

Project (2D→3D)

Normal Projection Target Shape 2D Base Mesh

Offset (2D→3D)

Sweep (2D→3D)

Orthogonal Sweeping

Guide Curve

2D Base Mesh

Mesh Generation


43/49

Mesh Manipulation

Extract 2D Mesh from 3D Mesh

Extract Element

(Laplacian/Winslow/Angle)

Smoothing

(2, 3-Refinement)

Divide Element

Closest Link

• Disconnect • Link (Elastic, Rigid) • Insert Interface Element • Closest Link • Coincident Link

Mesh Connection

Mesh Generation


44/49

Check & Quality Assurance

Twisted Penta

Collapsed Tetra (Near Zero Volume)

Check Free Face (Unconnected Element Face)

Free Face

No Free Face

Mesh Quality Plot

Mesh Generation

Check & Verify Free Edges/Faces Check & Align ECS

Quality Assurance Aspect Ratio Skew Angle Taper (2D) Warpage (2D) Jacobian Ratio Twist Collapse (Tetra)

45/49 FX+ Modeler

LBC & Analysis

Overview

Geometry Modeling

Mesh Generation

LBC & Analysis

02

14

28

45


46/49

Load & B.C. Load & B.C

Reference Csys : Rectangular, Cylindrical, Spherical Function-based Definition : Variable Condition (Load, Property, etc.) Graphic Display : Symbol / Text, Contour Plot (Nodal, Elemental) Table : Real Value


47/49

Function-based Definition

Variable Plate Thickness

T (Scale Factor) × Base Function

Load & B.C

Spatial Function Rectangular, Cylindrical, Spherical Non-spatial Function Time, Velocity, Temperature, etc.


48/49

Why FX+ Modeler?

Fast

Easy User-friendly

Powerful

Accurate

FX+ Modeler

The Most Productive Solution !

FX+ Modeler General Pre & Post-processor for Finite Element Analysis

Thank You! Thank You!

Documents

General Pre & Post -processor for Finite Element Analysis ...admin.midasuser.com/UploadFiles2/84/FXP_Modeler_2012.pdf · graphic user interface providing a complete FEA environment