LS-DYNA. The object of the study was a FEM model of a Geo Metro passenger car prepared by the National Crash Analysis Center. The existing vehicle model was adapted for simulation tests consisting of a frontal impact of the car against a flat, non-deformable wall.The method of simulating a car collision with a rigid obstacle described in the paper, along with selected calculation results, demonstrates the possibility of using FEM software for vehicle research in the context of road accident reconstruction. Determining the area of body deformation and the force during the collision makes it possible to define the body stiffness function. The body stiffness coefficient is one of the parameters used by automotive appraisers when conducting forensic expert reports. Thanks to this approach, the results obtained through numerical simulations can serve as a basis for verifying this and other coefficients used by forensic experts in the field of automotive engineering.
SIMULATION INVESTIGATION OF CAR BODY DEFORMATION IN IMPACT WITH A RIGID WALL
The paper presents an analysis of the results of impact simulations. Computer car crash simulation was performed using LS-DYNA. The test object was a FEM model of Geo Metro car prepared by the National Crash Analysis Center. The existing model of the vehicle was adapted for the simulation tests of frontal crash in rigid wall.
Described methods of simulation a car impact in a rigid wall and received results of calculations, show potential application of FEM programs for the car accidents reconstruction.
Calculation of the car body deformation and the impact force during the collision makes it possible to determine the function of body stiffness. The body stiffness coefficient is one of the indicator used by the automotive experts. Using the results obtained by numerical simulations can be verify other coefficients used in car accidents reconstruction. (…)
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Source: Logistyka Magazine