Abstract
Taking a full load bus as the research object, the finite element analysis theory is applied to build the finite element model of the bus and the numerical simulation environment of the structural strength of the superstructure. According to the ECE R66 equivalent authentication method, gravity center position of the bus is calculated, the rollover test of bus body section is carried out. The deformation of the superstructure and its invasion to residual space of passengers are evaluated. Comparing the rollover test result with the numerical simulation result, it can be found that there is a good agreement between the two results. On this basis, the energy-absorbing situation of the side wall pillars during the rollover process is studied and evaluated. The results show that the body section of bus is complied with the regulatory requirements; its structural safety characteristic is good. This design method of the rollover crash safety has important significance to research and development of manufacturer.
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