Structural Design Optimization of the Body Section Using the Finite Element Method

The CG of the bus is usually higher than other vehicles. When rollover accidents happen, because of the capacity of the passengers, the casualty is severe. The stiffness of the structure is the first thing that needs to be considered. The comparisons processes of the body section rollover test and analysis have been done. The paper is focusing on the Optimization of the bus structure which including the thickness of the frame and add some reinforcements by using LS-DYNA and HYPERSTUDY (the optimization analysis software).