Week 11 Car Crash simulation

Objective: To simulate car crash simulation using explicit dynamics module of ANSYS Workbench for the following values of chassis thickness.

1. 0.2 mm
2. 0.3 mm
3. 0.4 mm

Procedure:

1. Symmetry Regions:
2. Contacts: Being a sudden dynamic non linear event, no contacts are defined.
3. Body Interactions:
   1. Type: Frictionless
   2. Other Settings: Default
4. Meshing:
5. Boundary Conditions:

Analysis:

1. Case 1:
   1. Total Deformation:
   2. Equivalent Stress:
2. Case 2:
   1. Total Deformation:
   2. Equivalent Stress:
3. Case 3:
   1. Total Deformation:
   2. Equivalent Stress:

Result:

Cases	Total Deformation (mm)		Equivalent Stress (MPa)
	Maximum	Minimum	Maximum	Minimum
Case 1	1188.6	0	20996	0
Case 2	1181.7	0	20924	0
Case 3	1175	0	20994	0

Conclusion: The total deformation (average and maximum) and equivalent stress (average) is minimum in case 3 whereas maximum equivalent stress is minimum in case 2. Therefore, it is safer to select 0.4 mm as thickness of chassis among 0.2 mm, 0.3 mm and 0.4 mm.