Week 11 Car Crash simulation
CAR FRONTAL CRASH SIMULATION
In this car crash Simulation we will be anslyzing the frontal crash impact on the vehicles body having three different thicknessess sub dividedd as CASE 1, CASE 2 and CASE 3 respectively.
CASE I:
In this Case the thickness of the Car bidy is taken as 0.3 mm with material as Stainless steel.
Fig.Geometry for Fronatal Crash Simulation
MESH:
Fig. Mesh Generation for the Crash Simulation
Fig.Element Quality
From the above it is clear that the mes used is a tetra mesh as to capture each and every displaced element as hex dominant would take a lot of time and thus will be hard to evaluate further
BOUNDARY CONDITION:
Fig.Boundary Conditions
As in this case it is seen that the wall is displaced and made to crash on th car frontal section and the Side sectio of the car is fixed accordingly as shown and wall is displaced by 500 mm respectively.
SOLUTION CASE I:
In this Case as Discussed the thickness is taken as 0.3 mm respectively given as dscussed below.
Fig. Total Deformation For CASE I
Fig.Von Mises Stress For CASE -I
Fig.Equivalent Strain For CASE I
CASE II:
In this CASE the thickness of Car Body is taken as 0.4 mm and rest is Same
Fig. Total Deformation for CASE-II
Fig.Von Mises Stress For CASE II
Fig. Equivalent Strain For CASE II
CASE III
In this Case we will Consider the thickness of Car Body as 0.5 mm rest is the same
Fig.Total Deformation For CASE III
Fig.Von Mises Stres For CASE III
Fig.Equivalent Strain For CASE III
CONCLUSION:
| Sr No. | CASE | Thickness | Total Deformation(mm) | VonMises Stress (MPa) | Equivalent Strain |
| 1 | I | 0.3mm | 1068.5 | 3150.1 | 0.525 |
| 2 | II | 0.4mm | 1066.5 | 3254.9 | 0.590 |
| 3 | III | 0.5mm | 1064.7 | 3179.9 | 0.520 |
From the above it is clear that the as the thickness is increased the deformation is decreased and the highest stress encountered is 0.4 mm case i.e for CASE II and it has maximum strain of 0.59 comparatively.So it is quite clear that the maximum and minmum thickness has highest magnitude of Stress and strain respectivly, irrespective of material property