Optimum Design on Suspension Joint Parts of GFRP Composite Bogie Frame with H-shaped Side Beams for Urban Railway Trains

摘要

In order to optimize bolt locations for suspension joint parts of a GFRP composite bogie frame, the optimum design was done The structural integrity of a composite bogie frame was evaluated under three main in-service loads according to JIS E 4207. The optimum design was conducted using a sub-modeling technique, a sub-problem approximation method, and batch processing codes programmed by ANSYS Parametric Design Language (APDL), The results showed that the optimum design using the sub-modeling technique was able to obtain more accurate results by the control of mesh density for the interesting parts, and reduce maximum Von-Mises stress in comparison with initial model.