Research on Simulation and Improvement of Coach Frontal Crash

Aimed at 6120 coach,based on simulation software UG,ANSYS/LS-DYNA and finite element analysis(FEA) theory,the finite element model of coach body structure was established.According to the structure features of coach body,study of frontal crash FEA simulation was carried out at the initial speed of 50 km·h-1,the frontal crash deformation characteristics of its body structure were got.Aimed at the problem that the driving zone and driver living space were compressed seriously,some improvements of the front structure and the chassis were made in design.Simulation results show that the deformation speed of the driving zone decreases,as well as maximum values of the acceleration of the coach mass center and driver's seat measuring points decrease.The FEA simulation method has some reference and application value for coach body structure safety design of frontal crash and the relevant further study.