The optimization study on the stiffness of coupling in vehicle powertrain based on iSIGHT platform

In order to decrease the response of torsional vibration, multi-object optimization model of vehicle powertrain is established, which represented system vibration and integrated forced torsional vibration analysis program by iSIGHT software. In this model, stiffness of the coupling is variable, objective function is to minimize additional vibration stresses of shafts, and the calculation is finished by Pointer optimizer. After optimize design, vibration amplitude of lumped masses and additional torsional vibration stresses of shafts are evidently reduced. It shows that the optimization model is effective and fast, and it can provide reference to the improving of stiffness of coupling.