Abstract
The purpose of this study was to develop a approximation method of tooth stiffness of gear pairs in numerical calculation of gear system vibration. Tooth stiffness is approximated by fourth order function based on the transmission error. Firstly, the validity of the approximation applied to Multi Body Simulation was confirmed by comparison with Tooth Contact Analysis about the transmission error and the tooth bearing. Secondary, Multi Body Simulation with the approximation applied to simulation of gear noise variation on transmission assembly including bearing clearance. The proposed method allowed the prediction of the variation tendency of the vibration due to changes in bearing clearance.
