刚柔耦合稳定杆模型对悬架侧倾刚度影响分析

Analysis of the Influence of the Rigid-flexible Coupling Stabilizer Bar Model on the Lateral Stiffness of Suspensions

为了准确分析车辆的侧倾稳定性能,通过HyperMesh和ADAMS/Car联合仿真,建立非线性梁稳定杆子系统模型和柔性体稳定杆子系统模型。对搭建两种不同子系统模型的悬架系统,进行双轮反向激振试验。结果表明:装配有刚柔耦合的柔性体稳定杆子模型的悬架系统,在ADAMS仿真分析中,仿真数据更接近实车性能,说明刚柔耦合稳定杆模型更能准确反映车辆悬架的侧倾刚度;同时,在一定范围内提高稳定杆衬套的径向刚度,对提升悬架系统侧倾刚度有明显效果。

In order to analyze the lateral roll stability of vehicles accurately,the nonlinear beam stabilizer subsystem model and the flexible body stabilizer subsystem models were established and simulated by the joint of HyperMesh and ADAMS/Car codes.The suspension systems with the two different subsystem models were subjected to a double-wheel reverse excitation test.The results show that the simulation data of the suspension system which assembled with the flexible body stabilizer subsystem model is close to the real vehicle performance.It shows that the rigid-flexible coupling stabilizer bar model can more accurately reflect the roll stiffness of the vehicle suspension.In a certain range,the radial stiffness of the stabilizer bar bushing can be improved,and the lateral stiffness of the suspension system can be improved obviously.