FSAE赛车悬架系统几何设计及虚拟样机仿真分析

Geometric Design and Virtual Prototype Simulation Analysis of FSAE Racing Suspension System

以整车的基本参数和设计要求为参照依据,建立悬架系统的几何模型,用CATIA软件设计悬架硬点,获得相关参数;运用Optimum Kinematics动态仿真分析软件建立赛车悬架的虚拟样机模型,分析悬架系统与转向系统运动状态,并获知车轮外倾角、主销内倾角、主销后倾角在车轮跳动过程中的变化量,以此优化悬架硬点坐标,提高赛车在各路况下的操纵稳定性。优化和仿真结果表明设计的悬架系统满足参赛要求,为后期赛车制造及调试提供理论依据。

This paper presents a set of methods for the design of FSAE college students＇ formula car suspension system. Based on the basic parameters and design requirements of the vehicle, the geometrical model of the suspension system was established, the hard points of the suspension were designed by CATIA software, and the relevant parameters were obtained. The virtual prototype model of the car suspension was established by Optimum Kinematics dynamic simulation software, Analysis of the suspension system and steering system movement state,was used to get the wheel camber angle, the main pin dip angle, the main pin after the tilt in the wheel beating process changes to optimize the suspension point of hard points and improve the car in the road conditions Handling stability. The optimization and simulation results show that the design of the suspension system meets the entry requirements, and provides a theoretical basis for the late racing manufacturing and commissioning.