基于ADAMS的空气悬架客车运动性能仿真分析

Motility Analysis of Bus with Air Suspension Based on ADAMS

为了预测和评估车辆的操纵稳定性能,以多体系统动力学理论为基础,应用机械系统仿真分析软件AD-AMS,创建某大型空气悬架客车前悬架、后悬架及转向系等多体系统动力学模型,以及包括发动机、车身、前后轮胎等在内的整车模型;对虚拟模型进行平顺性仿真实验与悬挂系统固有频率仿真实验,并将仿真结果与实车试验结果进行对比,从而验证了所创建的虚拟样机模型的正确性和合理性.在此基础上,对整车模型进行操纵稳定性的仿真实验,并进行评价计分.研究结果表明,建立详细的数字化功能样机,可以有效地分析汽车的操纵稳定性.

Based on the theory of multi-body system dynamics, the mechanical system simulation software ADAMS is applied to predict and assess the handling stability of vehicle. The multi-body system dynamics model of front and rear suspending frame, and the steering system of a certain large air suspension bus is created. The models of full vehicle including engine, body, front and rear tire, etc is also achieved. Simulation test on ride comt＇ort and natural frequency of virtual model is done. Compared the simulation results with test of actual vehicle verifies the correctness and rationality of the virtual prototyping model is verified. It is shown that, the simulation test on handling stability of full vehicle can effectively analyze the handling stability of vehicle.