Study of the optimization of matching between torsional vibration damper and elastic coupling based on energy method

Abstract

To reduce the torsional vibration of vehicle power transmission system (VPTS), a torsional vibration model with multiple degrees of freedom (multi-DOFs) of VPTS was established for reasonable parameter selection of the torsional vibration damper (TVD) and elastic coupling (EC). Several schemes combining TVD and EC on the driveshaft were enacted. Based on this, an optimization model was established to minimize the maximum torsional vibration elastic potential energy (TVEPE) of VPTS. In this model, the torsional stiffness of EC and torsional stiffness and torsional damping coefficient of TVD were chosen as the optimization parameters. After calculation, the optimization results of different schemes were compared and analyzed. Results showed the model incorporating TVD and EC to have a better effect on reducing torsional vibration than TVD after reasonable structure selection and parameter optimization.