2013 FSAE Structural Equivalency Spreadsheet V1.0

8/11/2019 2013 FSAE Structural Equivalency Spreadsheet V1.0

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2013 FSAE Structural Equivalency Spreadsheet Guidance Notes

If you find a new problem with the SES template or require a clarification 72 hours or less before

Revisions:

V1.0 First release for 2013 rules

The SES template has been created to simplify the process of proving structural equivalency.

As downloaded the spreadsheet assumes a baseline steel chassis design. The majority of the cells in th

Cells shaded grey are dependant on the data entered in yellow cells, the formulae in these grey cells ha

The vast majority of the tabs can be accessed using the hyperlinks on the cover sheet. Note there are s

you enable macros when opening the document "Ctrl+e" will always return you to the cover sheet.

There have been a few questions about how to handle bent/two piece tubes in place of a single baseline

stiffer and stronger than the baseline tube, so please ensure you include images of the tube(s) in the "Cof equivalence to the "Additional Info" tab if you deem it necessary. You do not need to adjust the numbe

The SES has been extensively tested, but if you think you have found a mistake in the document or have

FSAE rules committee in the usual manner.


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he SES submission deadline please include your own proof of equivalency in the "Additional In

spreadsheet are locked, you can only edit the cells shaded yellow.

e been left visible so you can see how the results are calculated.

me that cannot such as the "additional info" and "welded tube insert" tabs. If

tube. If properly triangulated then the reinforced bent/two piece tube will be

assis Pics" tab for the SES assessor to review. You may add additional proofr of tubes in the relevant calculation tab.

any questions on how to use the template please submit a question to the


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fo" tab as well as filing a Rules question.


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If you have to resubmi

Submission Version

Original Submission


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bmission.


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University Name Car No.(s) & Event(s)

Team Contact Email Address

Faculty Advisor Email Address

Is proof of equivalency for your design required for any of the rules?

Attachment Checklist (make sure all are included in your report)

Receipt, letter of donation or proof for non-steel materials (composite, honeycomb, resin, etc)

Properties for all non-steel materials

Monocoque Laminate Test data and pictures

Holes >4mm drilled in any regulated tubing require proof of equivalency, include area and moment of inertia

Please see "Structural Equivalency Spreadsheet Guide"on the Read_Me tab of the SES Workbook

Approved by Date

N/A

T3.21.6

T3.41

T3.36

T3.38

YES NO EV4.2.2 Tractive System Protection

Impact Attenuator Anti-Intrusion Plate

Safety Harness Attachment - Monocoques

NO

EV3.4.2

N/A

N/AN/A

N/A N/A

N/A

NO

N/A

Design Description and/or

Material Used

Accumulator Attachment

EV3.4.4 Accumulator Protection

YES

YES

YES

N/A

N/A

N/A

Hoop Bracing Attach. - Monocoques

N/A

YES

YES

YES

YES

TECHNICAL COMMITTEE DECISION/COMMENTS

NOTE: THIS FORM AND THE APPROVED COPY OF THE SUBMISSION MUST BE PRESENTED

N/A

Impact Attenuator Attachment - Monocoques

COMPLETE APPROPRIATE TABS TO PROVE EQUIVALENCY

T3.37

Front Hoop Attachment - Monocoques

YES

Front Bulkhead - Monocoques

Front Hoop Bracing - Monocoques

Shoulder Harness Bar

Front Bulkhead Support - Tube Frames

N/A

N/A

T3.33

T3.37

Main Hoop Attachment - MonocoquesT3.35

N/A T3.37

N/A

YES

N/A

N/A

N/A

T3.32

N/A

N/A

T5.4

T3.25

NO

NO

Side Impact Structure - Monocoques

Alternative

Material

Used

Rule Description

T3.11

Front Bulkhead - Tube FramesT3.19

Front Roll Hoop Tubing

Front Hoop Bracing - Tube FramesT3.14

NO

2013 FSAETM

STRUCTURAL EQUIVALENCY SPREADSHEET (SES) V1.0 - COVER SHEET

This form must be completed and submitted by all teams no later than the date specified in the Action Deadlines

on specific event website. The FSAE Technical Committee will review all submissions which deviate from the

FSAETM

rules and reply with a decision about the requested deviation. All requests will have a confirmation of receipt

sent to the team. Structural Equivalency Spreadsheets (SES) must be submitted electronically in Microsoft Excel

Format (*.xls). The submissions must be named as follows: schoolname_ses.xls using the complete school name.

Please submit to the person indicated in the Action Deadlines for each event.

In the event that the FSAE Technical Committee requests additional information or calculations, teams have one

week from the date of requestto submit the requested information.

NO

Main Hoop Bracing Support - Monocoques

T3.34

T3.20

YES NO T3.13.6

NO

Side Impact Structure - Tube Frames

Main Roll Hoop TubingNO

No. Chassis does not deviate from baseline requirements

Baseline

Material

Used

YES

Rule No.

NO

T3.12

Main Roll Hoop Bracing TubingT3.13

Front Bulkhead Support - Monocoques

NO

Main Hoop Bracing Support - Tube Frames


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AT TECHNICAL INSPECTION AT EVERY FORMULA SAE EVENT ENTERED


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NA NA NA NA NA NA NA NA NA Steel Round 25.4 2.40


NA NA NA NA NA NA NA NA NA Steel Round 25.4 1.60NA NA NA NA NA NA NA NA NA Steel Round 25.4 1.25






NA NA NA NA NA NA NA NA NA





NA

NA

NA

NA

NA



Tube and Laminate Equivalency

EI

MaxBendingLoad

atUTS

UTS

Yield

Comp

Material

Panel

Thickness

Tube 2

TubeMaterial

Tubetype

Wallthickness

OutsideDimension

Tube 3

TubeMaterial

Tubetype

OutsideDimension

Wallthickness

Wallthickness

Tubetype

Outside

Dimension

Tube 1

TubeMaterial

Energyabsorbed

duringbending

Maxdeflectionat

maxbaselineload

Area

UTSas

Welded

e

as

Welded


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osite

SkinTickness

PanelHeight


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Images must include dimensions/labels indicating the following:

Angle of main and front hoops

Angle of main hoop bracingDistance from top of main hoop to main hoop brace attachment

Distance from top of front hoop to front hoop brace attachment

Outer diameter and wall thickness of all tubes

Teams entering cars with EV Powertrains must show the location of all HV components in these images

Please attach pictures of the frame and/or monocoque in the table below for review during the SES process. Please

colour code all tubes to show outer diameter and wall thickness. Three view drawings and isometric views of the

structure (CAD, FEA models, etc) are acceptable. Note: The final decision about all designs will be made at technical

inspection. Approval of an SES does not guarantee passing Technical Inspection.

2013 FSAETM

STRUCTURAL EQUIVALENCY SPREADSHEET - CHASSIS PICTURES


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Material Data Sheet

Material Spreadsheet Code Steel Aluminium 1 Aluminium 2 Carbon Other 1

Material name Steel Aluminium Aluminium 2 ply Your Mat. 1

Youngs Modulus, E 2.00E+11 7.00E+10 2.00E+00 3.21E+10 1.00E+00

Yield strength, Pa 3.05E+08 1.00E+00 2.00E+00 2.26E+08 1.00E+00

UTS, Pa 3.65E+08 1.00E+00 2.00E+00 2.26E+08 1.00E+00Yield strength, welded, Pa 1.80E+08 1.00E+00 2.00E+00 N/A 1.00E+00

UTS welded, Pa 3.00E+08 1.00E+00 2.00E+00 N/A 1.00E+00

UTS shear, Pa 2.19E+08 1.00E+00 2.00E+00 1.00E+00 1.00E+00

Steel properties based on SAE 1010 and are given in Rule T3.4.1 Note 1.

Results from extra physical test required by T3.31.1 should be entered in

Tubing only

Composite onlyTubes + composite

Round

Square


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Other 2 Other 3 Other 4 Other 5 Other 6

Your Mat. 2 Your Mat. 3 Your Mat. 4 Your Mat. 5 Your Mat. 6

2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00

2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00

2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+002.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00

2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00

2.00E+00 3.00E+00 4.00E+00 5.00E+00 6.00E+00

. Per rule T3.5 all steels are treated equally and are to use the above properties.

the "Other x" materials column as required.


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Main Hoop Structural Equivalency - note, only steel may be used

Material Property Baseline Your Tube

Material type Steel Steel

Tube shape Round Round

Material name /grade Steel Steel

Youngs Modulus, E 2.00E+11 2.00E+11Yield strength, Pa 3.05E+08 3.05E+08

UTS, Pa 3.65E+08 3.65E+08

Yield strength, welded, Pa 1.80E+08 1.80E+08

UTS welded, Pa 3.00E+08 3.00E+08

Tube OD, mm 25.4 25.4

Wall, mm 2.4 2.4

Baseline Your Tube

OD, m 0.0254 0.0254

Wall, m 0.0024 0.0024

I, m^4 1.1593E-08 1.15935E-08

EI 2.32E+03 2.32E+03 100.0

Area, mm^2 173.4 173.4 100.0Yield tensile strength, N 5.29E+04 5.29E+04 100.0

UTS, N 6.33E+04 6.33E+04 100.0

Yield tensile strength, N as welded 3.12E+04 3.12E+04 100.0

UTS, N as welded 5.20E+04 5.20E+04 100.0

Max load at mid span to give UTS for 1m long tube, N 1.33E+03 1.33E+03 100.0

Max deflection at baseline load for 1m long tube, m 1.20E-02 1.20E-02 100.0

Energy absorbed up to UTS, J 7.98E+00 7.98E+00 100.0


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Front Hoop Structural Equivalency






UTS, Pa 3.65E+08 3.65E+08



Tube OD, mm 25.4 25.4

Wall, mm 2.4 2.4

Baseline Your Tube

OD, m 0.0254 0.0254

Wall, m 0.0024 0.0024

I, m^4 1.1593E-08 1.15935E-08

EI 2.32E+03 2.32E+03 100.0


UTS, N 6.33E+04 6.33E+04 100.0


UTS, N as welded 5.20E+04 5.20E+04 100.0





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Main Hoop Bracing - Note: Only Steel may be used






UTS, Pa 3.65E+08 3.65E+08



Tube OD, mm 25.4 25.4

Wall, mm 1.6 1.6

Baseline Your Tube

OD, m 0.0254 0.0254

Wall, m 0.0016 0.0016

I, m^4 8.51E-09 8.51E-09

EI 1.70E+03 1.70E+03 100.0


UTS, N 4.37E+04 4.37E+04 100.0


UTS, N as welded 3.59E+04 3.59E+04 100.0





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22/64


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Your Composite Your Total

Carbon

NA

2 ply 3.21E+10

2.26E+08

2.26E+08

N/A

N/A

22

18

2

200

Tubing Only 6.93E-09

2.77E+03 100.0

189.7 100.0

5.79E+04 100.0

6.92E+04 100.0

3.41E+04 100.0

5.69E+04 100.0

1.59E+03 100.0

1.20E-02 100.0

9.54E+00 100.0

Tubing only


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Front Hoop Bracing



Tubing Type Round Round

Material name /grade Steel SteelYoungs Modulus, E 2.00E+11 2.00E+11

Yield strength, Pa 3.05E+08 3.05E+08

UTS, Pa 3.65E+08 3.65E+08



Number of tubes 1 1

Tube OD, mm 25.4 25.4

Wall, mm 1.6 1.6

Thickness of panel, mm

Thickness of core, mm

Thickness of skins, mm

Panel height,mm

OD, m 0.0254 0.0254

Wall, m 0.0016 0.0016

I, m^4 8.51E-09 8.51E-09

EI 1.70E+03 1.70E+03

Area, mm 2 119.6 119.6

Yield tensile strength, N 3.65E+04 3.65E+04

UTS, N 4.37E+04 4.37E+04

Yield tensile strength, N as welded 2.15E+04 2.15E+04

UTS, N as welded 3.59E+04 3.59E+04

Max load at mid span to give UTS for 1m long tube, N 9.78E+02 9.78E+02

Max deflection at baseline load for 1m long tube, m 1.20E-02 1.20E-02

Energy absorbed up to UTS, J 5.86E+00 5.86E+00

Enter construction type


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Front Bulkhead






UTS, Pa 3.65E+08 3.65E+08



Number of tubes 2 2

Tube OD, mm 25.4 25.4

Wall, mm 1.6 1.6




Panel height,mm

OD, m 0.0254 0.0254

Wall, m 0.0016 0.0016

I, m^4 8.51E-09 8.51E-09

EI 3.40E+03 3.40E+03

Area, mm 2 239.3 239.3


UTS, N 8.73E+04 8.73E+04



Max load at mid span to give UTS for 1m long tube, N 1.96E+03 1.96E+03Max deflection at baseline load for 1m long tube, m 1.20E-02 1.20E-02




27/64

Your Composite Your Total Monocoque Bulkhead Dimensions

Carbon

NA

2 ply3.21E+10

2.26E+08

2.26E+08

N/A Cutout Width

N/A

Bulkhead Width, mm

Bulkhead Height, mm

Cutout Width, mm

22 Cutout Height, mm

18

2

60


3.40E+03 100.0

239.3 100.0

7.30E+04 100.0

8.73E+04 100.0

4.31E+04 100.0

7.18E+04 100.0

1.96E+03 100.01.20E-02 100.0

1.17E+01 100.0

Tubing only

C

utoutHeight

Bulkhead Width

BulkheadHeight

300

350

240

250


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BH FBHS

b (m) 0.03 0.0015 3

h (m) 0.002 0.0254

2.0484E-09A1(m^2) 6.00E-05 I1 (m^4) 2.00E-11

A2(m^2) 6.00E-05 I2 (m^4) 2.00E-11 1 2 4

A3(m^2) 3.81E-05 I3(m^4) 2.05E-09

A4(m^2) 3.81E-05 I4(m^4) 2.05E-09

x1(m) 0.001 Ic1(m^4) 2.21E-08

x2 (m) 0.021 Ic2(m^4) 5.80E-11

x3 (m) 0.0347 Ic3(m^4) 1.01E-08

x4 (m) 0.0347 Ic4(m^4) 1.01E-08

Centroid (m) 0.0202

Ic12(m^4) 2.22E-08

Ic34(m^4) 2.01E-08

E34 3.21E+10

Bulkhead Front Bulkhead S


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upport


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Front Bulkhead Support Structure

Material Property Baseline

Your Tube

type 1

Your Tube

type 2

Material type Steel Steel Steel

Tubing Type Round Round RoundMaterial name /grade Steel Steel Steel

Youngs Modulus, E 2.00E+11 2.00E+11 2.00E+11

Yield strength, Pa 3.05E+08 3.05E+08 3.05E+08

UTS, Pa 3.65E+08 3.65E+08 3.65E+08

Yield strength, welded, Pa 1.80E+08 1.80E+08 1.80E+08

UTS welded, Pa 3.00E+08 3.00E+08 3.00E+08

Number of tubes 3 3 0

Tube OD, mm 25.4 25.4 25.4

Wall, mm 1.25 1.25 1.25

Baseline design?

Thickness of panel, mm YES N/A


Thickness of skins, mmPanel height,mm

OD, m 0.0254 0.0254 No tubes

Wall, m 0.00125 0.00125

I, m^4 6.93E-09 6.93E-09

EI 4.16E+03 4.16E+03

Area, mm 2 284.5 284.5


UTS, N 1.04E+05 1.04E+05






1.37E+03 1.39E+03 9.00E+99

If FEA is required for Composite structures then add this information below

Enter construction type Tubing only


31/64

Your Tube

type 3

Your Tubes

Total

Your

Composite Your Total

Steel Carbon

Round NASteel 2 ply

2.00E+11 3.21E+10

3.05E+08 2.26E+08

3.65E+08 2.26E+08

1.80E+08 N/A

3.00E+08 N/A

0

25.4

1.25

YES

N/A 25

22

1.5300

No tubes

6.93E-09 Tubing Only 6.93E-09

4.16E+03 4.16E+03 100.0

284.5 284.5 100.0

8.68E+04 8.68E+04 100.0

1.04E+05 1.04E+05 100.0

5.12E+04 5.12E+04 100.0

8.54E+04 8.54E+04 100.0

2.39E+03 2.39E+03 100.0

1.20E-02 1.20E-02 100.0

1.43E+01 1.43E+01 100.0

9.00E+99


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Impact Attenuator Anti-Intrusion Plate

Material Property Baseline Your Plate



Youngs Modulus, E 2.00E+11 2.00E+11

Yield strength, Pa 3.05E+08 3.05E+08UTS, Pa 3.65E+08 3.65E+08



UTS shear, Pa 2.19E+08 2.19E+08

Thickness of panel, mm 1.5 1.5

Panel height,mm 305 305

I, m^4 8.58E-11 8.58E-11

EI 1.72E+01 1.72E+01 100.0

Area, mm 2 457.5 457.5 100.0

Yield tensile strength, N 1.40E+05 1.40E+05 100.0

UTS, N 1.67E+05 1.67E+05 100.0

Yield tensile strength, N as welded 8.24E+04 8.24E+04 100.0UTS, N as welded 1.37E+05 1.37E+05 100.0

Perimeter shear strength for 25mm dia punch, N 2.58E+04 2.58E+04 100.0




PA


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Side Impact Structure


Your Tube

type 1

Your Tube

type 2





UTS, Pa 3.65E+08 3.65E+08 3.65E+08


UTS welded, Pa 3.00E+08 3.00E+08 3.00E+08


Tube OD, mm 25.4 25.4 25.4

Wall, mm 1.6 1.6 1.6

Baseline design?




OD, m 0.0254 0.0254 No tubes

Wall, m 0.0016 0.0016

I, m^4 8.51E-09 8.51E-09

EI 5.11E+03 5.11E+03

Area, mm 2 358.9 358.9


UTS, N 1.31E+05 1.31E+05






1.68E+03 1.70E+03 9.00E+99




34/64

Your Tube

type 3

Your Tubes

Total

Your


Steel Carbon

Round NASteel 2 ply

2.00E+11 3.21E+10

3.05E+08 2.26E+08

3.65E+08 2.26E+08

1.80E+08 N/A

3.00E+08 N/A

0

25.4

1.6

YES

N/A 25

22

1.5300

No tubes


5.11E+03 5.11E+03 100.0

358.9 358.9 100.0

1.09E+05 1.09E+05 100.0

1.31E+05 1.31E+05 100.0

6.46E+04 6.46E+04 100.0

1.08E+05 1.08E+05 100.0

2.93E+03 2.93E+03 100.0

1.20E-02 1.20E-02 100.0

1.76E+01 1.76E+01 100.0

9.00E+99


35/64


Paste images of test setup here

Figure 1: Test setup - Laminate Panel

Paste load deflection curve here

Figure 2: Load Deflection Curve

Enter values for minimum and maximum load/deflection in linear-elastic region

Gradient (N/mm)

(>= bending stiffness of one baseline side impact tube)

Enter value for force at panel failure or maximum tested force

(>= bending strength of two baseline side impact tubes)

Enter details of test setup, panel core and skin thicknesses below

l (mm) Panel Support Span

Panel Height (should be 200mm, alternative sizes must be agreed in advance)

Core Thickness (from T3.25/T3.34 Side Impact Structure tab)

Inner Skin Thickness (from T3.25/T3.34 Side Impact Structure tab)

Outer Skin Thickness (from T3.25/T3.34 Side Impact Structure tab)

I (mm4) Second moment of area

E (GPa) Skin modulus of elasticityUTS(MPa) UTS of skins

y1(N) 12760 2000x1 (mm)

x2 (mm)

0

2013 FSAETM

SES - LAMINATE TEST RESULTS

t1(mm)

1.5

1.5

b (mm)

h (mm) 200

ymax(N) 15000

t2(mm)

226

32.1

400

4119

y2(N)5 10000

82950

22


36/64



Figure 3: Test setup - Steel tube(s)


Figure 4: Load Deflection Curve - Steel Tube(s)


Gradient (N/mm)

Enter details of tube(s) tested

l (mm) Tube Support Span Theoretical EI (N.mm2)

n Number of Tubes Tested EI (N.mm2)Do(mm) Tube Outer Diameter Rig Compliance (N/mm)

Di(mm) Tube Inner Diameter

0

22.1

0 y2(N)

2013 FSAETM

SES - RIG COMPLIANCE TEST RESULTS (OPTIONAL)

x1 (mm) 0 y1(N) 0 0

x2 (mm)

01

25.41.74E+09

1.74E+09400


37/64



Figure 1: Test setup - Laminate Panel




Gradient (N/mm)

Enter value for force at panel failure or maximum tested force

(>= bending strength of two baseline side impact tubes)

Enter details of test setup, panel core and skin thicknesses below

l (mm) Panel Support Span

Panel Height (should be 200mm, alternative sizes must be agreed in advance)

Core Thickness

Inner Skin Thickness

Outer Skin Thickness

I (mm4) Second moment of area

E (GPa) Skin modulus of elasticityUTS(MPa) UTS of skins0

t1(mm) 1.5

t2(mm) 1.5

829500.0

400

h (mm) 200

b (mm) 22

4119

ymax(N) 0

x2 (mm) 0 y2(N) 0

x1 (mm) 0 y1(N) 0 0 1276

2013 FSAETM

SES - DIFFERENT LAYUP LAMINATE TEST RESULTS


38/64



Figure 3: Test setup - Steel tube(s)


Figure 4: Load Deflection Curve - Steel Tube(s)


Gradient (N/mm)

Enter details of tube(s) tested

l (mm) Tube Support Span Theoretical EI (N.mm2)

n Number of Tubes Tested EI (N.mm2)Do(mm) Tube Outer Diameter Rig Compliance (N/mm)

Di(mm) Tube Inner Diameter22.1

1.74E+09

1 1.74E+0925.4 0

0 y2(N) 0

400

x1 (mm) 0 y1(N) 0 0

x2 (mm)

2013 FSAETM

SES - DIFFERENT LAYUP RIG COMPLIANCE TEST RESULTS (OPTIONAL)


39/64



Figure 1: Test setup



Enter value for force at failure or maximum tested force

Enter details of skin thickness

Shear strength of skin, used for attachment calcs where appropriate

0 FAIL

shear(Mpa)

2013 FSAETM

SES - T3.33.3 PERIMETER SHEAR TEST RESULTS

t (mm)

ymax(N)

0.0

0.00


40/64



Figure 1: Test setup



Enter value for force at failure or maximum tested force

Enter details of skin thickness

Shear strength of skin, used for attachment calcs where appropriateshear(Mpa) 0.0

ymax(N) 0 FAIL

0.00

2013 FSAETM

SES - T3.34.3 PERIMETER SHEAR TEST RESULTS

t (mm)


41/64

Main Hoop Attachments

No. of attachment points per side 2 Note: A minimum of two attachment points per side are r

Attachment 1 Attachment 2

Fastener dia., mm 0 FAIL Fastener dia., mm 0 FAIL

No. of fasteners 0 FAIL No. of fasteners 0 FAIL

Bracket to hoop weld length, mm 0 FAIL Bracket to hoop weld length, mm 0 FAIL

Bracket thickness, mm 0 FAIL Bracket thickness, mm 0 FAIL

Bracket perimeter, mm 0 Bracket perimeter, mm 0

Skin thickness, mm 0 Skin thickness, mm 0

Skin shear strength, MPa 0 Skin shear strength, MPa 0

Perimeter shear strength, kN 0 FAIL Perimeter shear strength, kN 0 FAIL

Backing plate thickness, mm 0 FAIL Backing plate thickness, mm 0 FAILBacking plate perimeter, mm 0 Backing plate perimeter, mm 0


Insert images of each attachment point proving the values used to prove equivalence below:

FAIL FAIL


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quired


Fastener dia., mm 0 FAIL Fastener dia., mm 0 FAIL


Bracket to hoop weld length, mm 0 FAIL Bracket to hoop weld length, mm 0 FAIL






Backing plate thickness, mm 0 FAIL Backing plate thickness, mm 0 FAILBacking plate perimeter, mm 0 Backing plate perimeter, mm 0


N/A N/A


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Front Hoop Attachments

No. of attachment points per side 2 Note: A minimum of two attachment points per sid

Front hoop material Steel Note: This affects the minimum bracket to hoop w

Side Impact or Frt B'Head S'port SIS Is the hoop attached to the side impact structure o


Fastener dia., mm 0 FAIL Fastener dia., mm 0

No. of fasteners 0 FAIL No. of fasteners 0

Bracket to hoop weld length, mm 0 FAIL Bracket to hoop weld length, mm 0

Bracket thickness, mm 0 FAIL Bracket thickness, mm 0




Perimeter shear strength, kN 0 FAIL Perimeter shear strength, kN 0

Backing plate thickness, mm 0 FAIL Backing plate thickness, mm 0

Backing plate perimeter, mm 0 Backing plate perimeter, mm 0

Perimeter shear strength, kN 0 FAIL Perimeter shear strength, kN 0

Insert images of fully laminated hoop or each attachment point proving the values used to p

FAIL FAI


44/64

e are required for hoops that arent fully laminated into the chassis

eld length to prove equivalence to a welded side impact tube to hoop joint

r the front bulkhead support structure, this affects the skin shear strength used from test results


FAIL Fastener dia., mm 0 FAIL Fastener dia., mm 0

FAIL No. of fasteners 0 FAIL No. of fasteners 0

FAIL Bracket to hoop weld length, mm 0 FAIL Bracket to hoop weld length, mm 0

FAIL Bracket thickness, mm 0 FAIL Bracket thickness, mm 0




FAIL Perimeter shear strength, kN 0 FAIL Perimeter shear strength, kN 0

FAIL Backing plate thickness, mm 0 FAIL Backing plate thickness, mm 0


FAIL Perimeter shear strength, kN 0 FAIL Perimeter shear strength, kN 0

ove equivalence below:

L N/A N/


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FAIL

FAIL

FAIL

FAIL

FAIL

FAIL

FAIL


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Monocoque Hoop Bracing Attachments

Front Hoop Brace to Monocoque? NO Set to "NO" if the front hoop bracing is attached to tubes

Front Hoop Brace Material? Steel This affects the minimum bracket to hoop weld length to

Main Hoop Brace to Monocoque? NO Set to "NO" if the main hoop bracing is attached to tubes

Side Impact or Frt B'Head S'port SIS Is the main hoop bracing attached to a laminate the same

Front Hoop Bracing Attachment Main Hoop Bracing Attachment

Fastener dia., mm 0.0 FAIL Fastener dia., mm 0.0 FAIL


Bracket to brace weld length, mm 0 FAIL Bracket to hoop weld length, mm 0 FAIL






Backing plate thickness, mm 0 FAIL Backing plate thickness, mm 0 FAIL



Insert images of each attachment point proving the values used to prove equivalence below:

N/A N/A


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or is integral to the monocoque

rove equivalence to a welded side impact tube to hoop joint

as the side impact structure or front bulkhead support?


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Paste images of test setups here

Figure 1: Test setups

Paste load deflection curves here

Figure 2: Load Deflection Curves Shoulder harness attached to monocoque?

PASS Lap-belt attached to monocoque?

Anti-submarine bolt attached to monocoque?

Combined Lap & Anti-submarine belt?Shoulder Harness Attachment

Enter value for force at failure or maximum tested force (>= 13000N)

Lap Belt Attachment


Anti-submarine Belt Attachment


Combined Lap Belt & Anti-submarine Belt Attachment


N/A

N/A

ymax(N) 0

ymax(N) 0

N/A

N/A

ymax(N) 0

2013 FSAETM

STRUCTURAL EQUIVALENCY SPREADSHEET - HARNESS ATTACHMENT TEST RESULTS

0ymax

(N)

NO

NO

NO

NO


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Shoulder Harness Bar Equivalency






UTS, Pa 3.65E+08 3.65E+08



Number of tubes 1 1

Tube OD, mm 25.4 25.4

Wall, mm 2.4 2.4




Panel height,mm

OD, m 0.0254 0.0254

Wall, m 0.0024 0.0024

I, m^4 1.16E-08 1.16E-08

EI 2.32E+03 2.32E+03

Area, mm 2 173.4 173.4


UTS, N 6.33E+04 6.33E+04








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Your Composite Your Total

Carbon

N/A

2 ply 3.21E+10

2.26E+08

2.26E+08

N/A

N/A

22

20

1

300


2.32E+03 100.0

173.4 100.0

5.29E+04 100.0

6.33E+04 100.0

3.12E+04 100.0

5.20E+04 100.0

1.33E+03 100.0

1.20E-02 100.0

7.98E+00 100.0

Tubing only


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2013 FSAETM

SES - MONOCOQUE IA ATTACHMENTS

If you have a monocoque chassis enter your proof of equivalency to 4 Grade 8.8 M8 fasteners in the cells below.


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Accumulator Mass (kg)

Horizontal Force (N)

Vertical Force (N) 0

2013 FSAETM

STRUCTURAL EQUIVALENCY SPREADSHEET - ACCUMULATOR ATTACHMENT

Please use this sheet to prove the mounting system for your accumulator complies with Rule EV3.4.2

0

0


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Accumulator Protection


Your Tube

type 1

Your Tube

type 2





UTS, Pa 3.65E+08 3.65E+08 3.65E+08


UTS welded, Pa 3.00E+08 3.00E+08 3.00E+08


Tube OD, mm 25.4 25.4 25.4

Wall, mm 1.6 1.6 1.6

Baseline design?




OD, m 0.0254 0.0254 No tubes

Wall, m 0.0016 0.0016

I, m^4 8.51E-09 8.51E-09

EI 5.11E+03 5.11E+03

Area, mm 2 358.9 358.9


UTS, N 1.31E+05 1.31E+05






1.68E+03 1.70E+03 9.00E+99




56/64

Your Tube

type 3

Your Tubes

Total

Your


Steel Carbon

Round NASteel 2 ply

2.00E+11 3.21E+10

3.05E+08 2.26E+08

3.65E+08 2.26E+08

1.80E+08 N/A

3.00E+08 N/A

0

25.4

m

YES

N/A 25

22

1.5300

No tubes


5.11E+03 5.11E+03 100.0

358.9 358.9 100.0

1.09E+05 1.09E+05 100.0

1.31E+05 1.31E+05 100.0

6.46E+04 6.46E+04 100.0

1.08E+05 1.08E+05 100.0

2.93E+03 2.93E+03 100.0

1.20E-02 1.20E-02 100.0

1.76E+01 1.76E+01 100.0

9.00E+99


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Tractive System Protection


Your Tube

type 1

Your Tube

type 2





UTS, Pa 3.65E+08 3.65E+08 3.65E+08


UTS welded, Pa 3.00E+08 3.00E+08 3.00E+08


Tube OD, mm 25.4 25.4 25.4

Wall, mm 1.25 1.25 1.25

Baseline design?




OD, m 0.0254 0.0254 No tubes

Wall, m 0.00125 0.00125

I, m^4 6.93E-09 6.93E-09

EI 4.16E+03 4.16E+03

Area, mm 2 284.5 284.5


UTS, N 1.04E+05 1.04E+05






1.37E+03 1.39E+03 9.00E+99




58/64

Your Tube

type 3

Your Tubes

Total

Your


Steel Carbon

Round NASteel 2 ply

2.00E+11 3.21E+10

3.05E+08 2.26E+08

3.65E+08 2.26E+08

1.80E+08 N/A

3.00E+08 N/A

0

25.4

1.25

YES

N/A 25

22

1.5300

No tubes


4.16E+03 4.16E+03 100.0

284.5 284.5 100.0

8.68E+04 8.68E+04 100.0

1.04E+05 1.04E+05 100.0

5.12E+04 5.12E+04 100.0

8.54E+04 8.54E+04 100.0

2.39E+03 2.39E+03 100.0

1.20E-02 1.20E-02 100.0

1.43E+01 1.43E+01 100.0

9.00E+99


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Welded Tube Insert Equivalency - required for all mandated tubes per T3.4 withIf you have more than one type of insert please copy this tab

Material Property Your Tube

Your Tube

+ Insert


Tube Shape Round N/A



UTS, Pa 3.65E+08 3.65E+08

Yield strength, welded, Pa N/A 1.80E+08

UTS welded, Pa N/A 3.00E+08

Tube OD, mm

Wall, mm

Your Tube

Your Tube

+ Insert

OD, m

Wall, m

I, m^4 1.1593E-08 0.00E+00EI 2.32E+03 0.00E+00 0.0

Tube area, mm^2 173.4 0.0 NA

Insert area, mm^2 NA 0.0 NA

Yield tensile strength, N 5.29E+04 0.00E+00 0.0

UTS, N 6.33E+04 0.00E+00 0.0


Max deflection at baseline load for 1m long tube, m 1.20E-02 0.00E+00 999.0


Note - the calculations above take account of the "as welded condition" strength reduction

Insert calculations or CAD screenshot proving tube + insert area and second moment

of area below. Use the "Additional Info" tab if more space is needed.

25.4

2.4

0.0254

0.0024


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drilled holes > 4mm dia.


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2013 FSAETM

STRUCTURAL EQUIVALENCY SPREADSHEET - CONTINUATION TAB

Please use this sheet to include additional information required for your proof of equivalency that isn't covered by the

standard forms e.g. material receipts. This tab may be copied if one page isn't sufficient.


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Documents

2013 FSAE Structural Equivalency Spreadsheet V1.0