Study On Strength Of Bus Superstructure And Side-rolling Crash Test

With the implementation of the compulsory law for vehicle passive safety, domestic vehicle producers are paying more attention to it. In1998, GBT17578-1998"Provisions of strength for the superstructure of bus" promulgated in China is beneficial to evaluate the passive safety of bus.Based on the dynamic nonlinear explicit finite element theory, the paper argues some key techniques of finite element modeling such as model simplification, meshing density and definition of material parameters superficially.The article takes up with study on strength of bus superstructure when side-rolling crash happens, sets up finite element model of the bus body frame using FEA software ANSYS, and simulates the side-rolling crash with non-linear finite element analysis software LS-DYNA according to concerned regulations, verifies the validity of model building method by comparing the emulation result with the bus side-rolling crash test result, provides referenced foundation for structure improvement and optimization analysis later.Starting from practical project purpose, here the author discusses the content and project of the test about the crash of the side-rolling bus, provides some valuable reference for those who want to do the similar experiment, deals with the data collecting from the experiment which will provide practical foundation for model building and validating.