基于Adams/Car平台的某车型横向稳定杆对车辆侧倾特性的影响分析

Analysis of the roll characteristics of the vehicle affected by anti-roll bar based on Adams/Car

以某款轿车的麦弗逊前悬架的横向稳定杆为研究对象,应用铁木辛柯梁力学原理,详细分析在Adams/Car模块中建立横向稳定杆精确模型的方法,并进行仿真试验。通过仿真输出随车轮跳动的稳定杆端部受力曲线,和传统方法计算所得的稳定杆刚度对比,验证所建动力学模型的可行性和有效性。最后通过建立有横向稳定杆和无横向稳定杆的前悬架子系统模型,进行对比仿真。结果表明:相对于无横向稳定杆而言,带有横向稳定杆的麦弗逊前悬架,垂直刚度和侧倾特性可以得到有效地改善。

The Macpherson front suspension of a certain type of compact vehicle was studied.Based on the mechanics principle of Timoshenko Beam,an accurate anti-roll bar model was established and analyzed in detail by using Adams/Car.The simulation of the model was carried out.Compared with the stiffness of the anti-roll bar calculated by using the traditional method,the mean of observing the curve of the force exerted on the end of the anti-roll bar with wheel jumpiness was verified which proved that the dynamics model was feasible and effective.Then the front suspension systems equipped with anti-roll bar and without anti-roll bar were established comparatively for the simulation.The result showed that compared with the one equipped without anti-roll bar,the vertical stiffness and roll characteristics of the suspension equipped with anti-roll bar were improved obviously.