Abstract
The computational method and the CAE technique have been developed to evaluate durability performance of a motorcycle body. The computational method in this study consists of three parts of simulation. The first is the mode analysis of the body parts. The second is the multi body dynamics simulation, which calculates forces loaded into the frame of a motorcycle body equivalent to actual durability tests. The third is the static structure analysis, which calculates stress distribution using the forces calculated by the multi body dynamics simulation as boundary conditions. Also, two kinds of durability tests, that are the chassis durability test and the falling durability test, are simulated in this study.