Design, analysis and experimental verification of tubular spaceframe chassis for FSAE application 1

Appendices 1 - Design & Analysis of Chassis – Shape of
Chassis
1) Chassis 1

Figure 108-Investigation of driver ergonomics requirement of chassis 1

Figure 109-Investigation of rule requirement (B3.9) of chassis 1

Figure 110-Investigation of rule requirement (B.4.2) of chassis 1

212


Figure 111-Investigation of auxiliary requirement of chassis 1

Figure 112-Investigation of rule requirement (B.4.1) of chassis 1

2) Chassis 2
Weight of Chassis vs Length of Foot Well
24.40
Weight of Chassis (kg)

24.20
24.00
23.80
23.60
23.40
23.20
400

450

500

550

600

650

700

Length of Foot Well (mm)
Graph 44-Weight of chassis 2 with respect to variation of length of foot well

213


STS of Chassis vs Length of Foot Well
537.00
TS of Chassis (Nm/deg)

536.80
536.60
536.40
536.20
536.00
535.80
535.60
535.40
400

450

500

550

600

650

700

Length of Foot Well (mm)

Graph 45-Structural torsional stiffness (STS) of the chassis 2 with respect to variation of length of foot well

Figure 113-Investigation of auxiliary requirement of chassis 2

Figure 114-Investigation of driver ergonomics requirement of chassis 2

214


Figure 115-Investigation of rule requirement (B.3.9) of chassis 2

Figure 116-Investigation of rule requirement (B.4.2) of chassis 2

3) Chassis 3

Weight of Chassis (kg)

Weight of Chassis vs Height of FBH
23.68
23.66
23.64
23.62
23.60
23.58
23.56
23.54
23.52
23.50
23.48
300

320

340

360

380

400

420

Height of FBH (mm)

Graph 46-Weight of chassis 3 with respect to variation of height of front bulkhead

215


TS of Chassis (Nm/deg)

STS of Chassis vs Height of FBH

540.00
539.50
539.00
538.50
538.00
537.50
537.00
536.50
536.00
535.50
300

320

340

360

380

400

420

Height of FBH (mm)

Graph 47-Structural torsional stiffness (STS) of chassis 3 with respect to variation of height of front bulkhead

4) Chassis 4
Weight of Chassis vs Width of FBH
23.70
Weight of Chassis (kg)

23.65
23.60
23.55
23.50
23.45
23.40
23.35
23.30
220

270

320

370

420

Width of FBH (mm)

Graph 48-Weight of chassis 4 with respect to variation of width of front bulkhead

216


TS of Chassis (Nm/deg)

STS of Chassis vs Width of FBH

565
560
555
550
545
540
535
530
525
520
515
220

270

320

370

420

Width of FBH (mm)

Graph 49-Structural torsional stiffness (STS) of chassis 4 with respect to variation of width of front bulkhead

Figure 117-Investigation of auxiliary requirement

Figure 118-Investigation of auxiliary requirement

of chassis 4

of chassis 4

Figure 119-Investigation of rule requirement (B.4.2) of chassis 4

217


Figure 120-Investigation of auxiliary requirement of chassis 4

Figure 121-Investigation of rule requirement (B4.2) of chassis 4

Figure 122-Investigation of rule requirement (B3.9) of chassis 4

218


Figure 123-Investigation of driver ergonomics requirement of chassis 4

5) Chassis 5
Weight of Chassis vs Height of FMBH
23.70
Weight of Chassis (kg)

23.60
23.50
23.40
23.30
23.20
23.10
360

410

460

510

Height of FMBH (mm)

Graph 50-Weight of chassis 5 with respect to variation of height of front middle bulkhead

219


STS of Chassis vs Height of FMBH

564
TS of Chassis (Nm/deg)

562
560
558
556
554
552
550
360

410

460

510

Height of FMBH (mm)

Graph 51-Structural torsional stiffness (STS) of chassis 5 with respect to variation of height of front middle
bulkhead

Figure 124-Investigation of rule requirement (B4.2) of chassis 5

Figure 125-Investigation of rule requirement (B3.9) of chassis 5

220


Figure 126-Investigation of driver ergonomics requirement of chassis 5

Figure 127-Investigation of auxiliary requirement of chassis 5

6) Chassis 6

Weight of Chassis (kg)

Weight of Chassis vs Height of FRH
23.90
23.80
23.70
23.60
23.50
23.40
23.30
23.20
23.10
23.00
360

410

460

510

Height of FRH (mm)

Graph 52-Weight of chassis 6 with respect to variation of height of front roll hoop

221

STS of Chassis vs Height of FRH

TS of Chassis (Nm/deg)

580
570
560
550
540
530
520
360

410

460

510

Height of FRH (mm)

Graph 53-Structural torsional stiffness (STS) of chassis 6 with respect to variation of height of front roll hoop

Figure 128-Investigation of rule requirement (B4.2) of chassis 6

Figure 129-Investigation of auxiliary requirement of chassis 6

222

Figure 130-Investigation of rule requirement (B3.9) of chassis 6

Figure 131-Investigation of driver ergonomics requirement of chassis 6

7) Chassis 7
Weight of Chassis vs Length of DC
23.73
Weight of Chassis (kg)

23.72
23.71
23.70
23.69
23.68
23.67
23.66
580

600

620

640

660

680

700

720

Length of DC (mm)

Graph 54-Weight of chassis 7 with respect to variation of length of driver cockpit

223


STS of Chassis vs Length of DC
610.00
TS of Chassis (Nm/deg)

600.00
590.00
580.00
570.00
560.00
550.00
540.00
530.00
580

600

620

640

660

680

700

720

Length of DC (mm)

Graph 55-Structural torsional stiffness (STS) of chassis 7 with respect to variation of length of driver cockpit

Figure 132-Investigation of driver ergonomics requirement of chassis 8

Figure 133-Investigation of rule requirement (B4.1) of chassis 8

224


Figure 134-Investigation of rule requirement (B3.9) of chassis 8

8) Chassis 8

Weight of Chassis (kg)

Weight of Chassis vs Height of MRH
24.20
24.15
24.10

24.05
24.00
23.95
23.90
23.85
23.80
23.75
23.70
23.65
980

1000

1020

1040

1060

1080

1100

1120

Height of MRH (mm)

Graph 56-Weight of chassis 8 with respect to variation of height of main roll hoop

225

STS of Chassis vs Height of MRH

607.00
TS of Chassis (Nm/deg)

606.00
605.00
604.00
603.00
602.00
601.00
600.00
599.00
980

1000

1020

1040

1060

1080

1100

1120

Height of MRH (mm)

Graph 57-Structural torsional stiffness (STS) of chassis 8 with respect to variation of height of main roll hoop

Figure 135-Investigation of auxiliary requirement of chassis 8

Figure 136-Investigation of driver ergonomics requirement of chassis 8

226


Figure 137-Investigation of rule requirement (B3.9) of chassis 8

9) Chassis 9

Weight of Chassis (kg)

Weight of Chassis vs Width of MRH
24.70
24.60
24.50
24.40
24.30
24.20
24.10
24.00
23.90
23.80
23.70

600

650

700

750

800

850

Height of MRH (mm)

Graph 58-Weight of chassis 9 with respect to variation of width of main roll hoop

227


STS of Chassis vs Width of MRH
TS of Chassis (Nm/deg)

670.00
660.00
650.00
640.00
630.00
620.00
610.00
600.00

600

650

700

750

800

850

Width of MRH (mm)

Graph 59-Structural torsional stiffness (STS) of chassis 9 with respect to variation of width of main roll hoop

Figure 138-Investigation of driver ergonomics requirement of chassis 9

Figure 139-Investigation of rule requirement (B3.9) of chassis 9

228


Figure 140-Investigation of auxiliary requirement of chassis 9

10) Chassis 10
Weight of Chassis vs Height of RBH

24.45

Weight of Chassis (kg)

24.40
24.35
24.30
24.25
24.20
24.15
200

250

300

350

400

Height of RBH (mm)

Graph 60-Weight of chassis 10 with respect to variation of height of rear bulkhead

STS of Chassis vs Height of RBH

641.9
TS of Chassis (Nm/deg)

641.88
641.86
641.84

641.82
641.8
641.78
200

250

300

350

400

Height of RBH (mm)
Graph 61-Structural torsional stiffness (STS) of chassis 10 with respect to variation of height of rear bulkhead

229


Appendices 2 - Design & Analysis of Chassis – Orientation of
Brace
1) Chassis 11
24.80

Weight of Chassis vs Brace Variation

Weight of Chassis (kg)

24.70
24.60

24.50
24.40
24.30
24.20
24.10
24.00
1

2

3

4

Brace Variation

Chart 27-Weight of chassis 11 with respect to variation of orientation of brace

TS of Chassis (Nm/deg)

STS of Chassis vs Brace Variation
649.00
648.00
647.00
646.00
645.00
644.00
643.00
642.00
641.00

640.00
639.00
638.00
1

2

3

4

Brace Variation

Chart 28-Structural torsional stiffness (STS) of chassis 11 with respect to variation of orientation of brace

230


Figure 141-Investigation of auxiliary requirement of

Figure 142-Investigation of driver ergonomics

chassis 11

requirement of chassis 11

Figure 143-Investigation of rule requirement (B4.2) of chassis 11

2) Chassis 12

Weight of Chassis (kg)

Weight of Chassis vs Brace Variation
25.80
25.60
25.40
25.20
25.00
24.80
24.60
24.40
24.20
24.00
23.80
1

2

3

4

Brace Variation

Chart 29-Weight of chassis 12 with respect to variation of orientation of brace

231


STS of Chassis vs Brace Variation

TS of Chassis (Nm/deg)

658.00
656.00
654.00
652.00
650.00
648.00
646.00
644.00
642.00
1

2

3

4

Brace Variation

Chart 30-Structural torsional stiffness (STS) of chassis 12 with respect to variation of orientation of brace

Figure 144-Investigation of auxiliary requirement

Figure 145-Investigation of rule requirement (B4.2)

of chassis 12

of chassis 12

Figure 146-Investigation of driver ergonomics requirement of chassis 12

3) Chassis 13
232


Weight of Chassis (kg)

Weight of Chassis vs Brace Variation
25.60
25.50
25.40
25.30
25.20
25.10
25.00
24.90
24.80
24.70
1

2

3

4

Brace Variation

Chart 31-Weight of chassis 13 with respect to variation of orientation of brace

STS of Chassis vs Brace Variation
700.00
TS of Chassis (Nm/deg)

690.00
680.00
670.00
660.00
650.00
640.00
630.00
1

2

3

4

Brace Variation

Chart 32-Structural torsional stiffness (STS) of chassis 13 with respect to variation of orientation of brace

233


Figure 147-Investigation of auxiliary requirement

Figure 148-Investigation of rule requirement (B4.2)

of chassis 13

of chassis 13

Figure 149-Investigation of driver ergonomics requirement of chassis 13

4) Chassis 14

Weight of Chassis (kg)

Weight of Chassis vs Brace Variation
26.60
26.40
26.20
26.00
25.80
25.60
25.40
25.20
25.00
24.80
24.60
1

2

3

4

5

Brace Variation

Chart 33-Weight of chassis 14 with respect to variation of orientation of brace

234


STS of Chassis vs Brace Variation

TS of Chassis (Nm/deg)

850.00
800.00
750.00
700.00
650.00
600.00
1

2

3

4

5

Brace Variation

Chart 34-Structural torsional stiffness (STS) of chassis 14 with respect to variation of orientation of brace

Figure 150-Investigation of auxiliary requirement

Figure 151-Investigation of rule requirement (B4.2)

of chassis 14

of chassis 14

Figure 152-Investigation of driver ergonomics requirement of chassis 14

5) Chassis 15

235


Weight of Chassis (kg)

Weight of Chassis vs Brace Variation

27.60
27.40
27.20
27.00
26.80
26.60

26.40
26.20
26.00
25.80
1

2

3

4

5

6

7

8

Brace Variation

Chart 35-Weight of chassis 15 with respect to variation of orientation of brace

TS of Chassis vs Brace Variation

845.00
TS of Chassis (Nm/deg)

840.00

835.00
830.00
825.00
820.00
815.00
810.00
805.00
1

2

3

4

5

6

7

8

Brace Variation

Chart 36-Structural torsional stiffness (STS) of chassis 15 with respect to variation of orientation of brace

Figure 153-Investigation of auxiliary requirement of chassis 15

236