The simulation and optimization for car door crashworthiness

Aimed at the problem of car door side crashworthiness,one native car door side crashworthiness was analyzed by explicit non-linear finite element software LS-DYNA.The analyzed parameter from crash indicated that side impact safety and effect of energy absorption of the door is dissatisfied.For enhanced the side crashworthiness,the structure and location of the bumper inside the door are changed,and the material shift to high-strength steel.Before and after improvement simulation results show that the displacement,velocity and acceleration of door deformation and the effect of energy absorption are increased.So the car door side crashworthiness is improved.