基于iSIGHT平台的车辆动力传动系统联轴器刚度优化研究

The Optimization Study on the Stiffness of Coupling in Vehicle Powertrain Based on iSIGHT Platform

为减小传动系统扭振响应,基于iSIGHT优化设计平台,集成自编的车辆动力传动系统扭振分析程序建立了反映系统振动的多目标优化模型。该模型以联轴器刚度为设计变量,以多个轴段的附加扭振应力最小为目标,采用Pointer全能优化器求解,实现了联轴器刚度优化设计。优化后,扭振角位移及轴段附加扭振应力都显著减小。结果表明,通过iSIGHT优化平台集成扭振分析程序,形成了一个快速有效的优化系统,对车辆动力传动系统联轴器刚度的设计具有指导意义。

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.