Study On Bus Passive Safety And Crash Test

The passive safety and crash problem of the bus is a widespread concern in recent year. For reducing passenger dead and injured rated in turn over trouble of bus, the United Stated and Europe drew up successively to the FMVSS 216 and the ECE R66 standard, but in the our country the automobile crash laws are only limited by the Ml car type, especially big and medium-sized bus still not much to see the engineering application report.In the foundation that check the domestic and international related heritage data, this text takes the bus carriage as the research object, combining AnKai automobile incorporated company match with the HeFei industry university concerning bus superstructure strength analyze when side-rolling crash happens. According to the national standard GB/T17578-1998 and European laws of ECE R66, the author make use of computer to imitate the big and medium-sized bus of passive safety and side-rolling crash. Based on experiment of a certain bus of AnKai automobile incorporated company, the article sets up finite element model of the bus body frame using non-rolling crash according to concerned regulations.Make use of non-linear finite element analysis software ANSYS/LS-DYNA, the article builds up finite element model and converts the IGES format, and simulates the side-rolling crash of bus. Based on the dynamic non-linear 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.