基于ADAMS的麦弗逊悬架的动力学仿真和优化

Dynamic Simulation and Optimization of McPherson Suspension based on ADAMS

本文以多刚体系统动力学为理论基础,应用多体运动学与动力学仿真软件ADAMS中的Car专业模块建立了麦弗逊悬架多刚体模型。在对该悬架模型进行了两侧车轮同向跳动的仿真分析后,研究了前束角(Toe Angle)、车轮外倾角(Camber Angle)、主销后倾角(CasterAngle)、主销内倾角(Kingpin Inclination Angle)及车轮转向角(Steer Angle)五个悬架运动特性参数,同时研究了这五个运动特性参数对汽车的稳态响应特性、直线行驶的稳定性、操纵稳定性等众多性能的影响。此外,以改善悬架的性能为目标,从ADAMS/Car模块中导入ADAMS/Insight模块,对麦弗逊悬架五个运动特性参数进行了优化。最后,对优化前后的悬架运动特性参数曲线进行了比较,并从比较中得到较好的运动特性参数,从而对悬架进行了优化。

This paper is based on Multi-rigid Body System dynamics and establish a Multi-rigid Body model of McPherson Suspension with ADAMS/Car. Study five kinematic parameters of suspension including Toe Angle,Camber Angle, Caster Angle,Kingpin Inclination Angle, Steer Angle after simulating and analysing the suspension model whose two wheels bump and rebound to the same direction.Besides,in order to improve the performaces of the suspension,the five kinematic parameters are optimized with ADAMS/Insight from ADAMS/Car.Finally, compare the optimized curves of kinematic parameters with the original curves to gain better kinematic parameters.Then suspension has been optimized.