This paper used the 3d modeling software to establish SOLID model and simplified it. And it used ANSYS workbench to make the simulation analysis on dynamic performance of the universal joint. Compared undamped free vibration modal analysis with the inherent frequency measurement experimental results, to verify the accuracy of the finite element model, and prove its no resonance phenomenon.

Aimed at multi-pulleys timing belt transmission system of automobile engine , programing parametric design software based on visual C++, set up timing belt and pulleys 3D model , Improve the design efficiency by design chart and data programmed processing .through comparison of conventional design result , verify the software feasibility and exactness.

This paper takes ball cage patterned constant speed universal joint of as the research object. Using the 3 d modeling software solidworks to establish solid model and simplified it . Based on ANSYS, do finite element contact stress analysis by the universal joint of the two kinds of condition. find out the weak part,through the improvement of raceway design parameters, Relieve the stress concentration phenomenon, reduces the maximum stress, increases the service life of universal joint.