Week 11 Car Crash simulation
Objective:
To perform a parametric study using 3 different values of thickness for the car body. You need to apply the same conditions as mentioned in the video that corresponds to this challenge.Analyse the total deformation and Equivalent stresses acting on the model.
Procedure:
- add stainless steel material to the library
- rename the parts
- delete default contacts
- add thickness of 0.3mm for carbody for the first case and add material to the car body
- add symmetry region for the car body
- Meshing done by patch control tetra hedrans method for wall and face sizing of rear car body with element size 600 with triangular elements remaining portion with 300mm element size
- insert fixed support for car body rear face.insert displacement for back surface of the wall in z-direction with 500mm.
- in analysis settings change end time 0.001s
- insert total deformation,equivalent stress,total deformation.then run the simulation.
- for case 2 and case 3 change thickness of the car body 0.6mm and 1mm respectively
Results:
Case1:
Total Deformation:
Equivalent stress:
Case2:
Total Deformation:
Equivalent stress:
Case3:
Total Deformation:
Equivalent stress:
Result comparrison:
| Total Deformation(mm) | Equivalent stress(Mpa) | |
| case-1(0.3mm) | 806.5 | 1857.3 |
| case-2(0.6mm) | 803.9 | 1969.3 |
| case-3(1mm) | 801.8 | 2179.6 |
Discussion:
As the thickness of the car body Increases the equivalent stress generated will increases and the total deformation will reduce.