记笔记

A Road-Holding Index Based on Ride Dynamics for HighDownforce Racing Cars

Felipe Marchesin¹Roberto Spinola Barbosa¹Marco Gadola²Daniel Chindamo²

1. Department of Mechanical Engineering, University of Sao Paulo 2. Department of Industrial and Mechanical Engineering, Automotive Group, University of Brescia

摘要：This work builds on some of the current industry techniques used in racing to evaluate vertical dynamics performance and propose a new methodology to evaluate vehicle performance. The proposed method creates a quantitative numerical index from the classic tyre vertical load variation frequency response function with some novelties that cover all peculiarities of high downforce race cars. In this method the aerodynamic forces are included as non-linear functions vs ride height and it is shown that they affect system stiffness and damping. As a result, the system response changes as a function of vehicle longitudinal speed. The importance of non-linear suspension rates in this kind of vehicle is also highlighted. The proposed index can also be customized for a certain vehicle speed range. A Formula 3 racecar model has been used as an application example.

基金：

Fortec Motorsports UK for all data supplied and their support；

会议名称：

The 4th International Conference on Manufacturing, Material and Metallurgical Engineering （ICMMME 2019）

会议时间：

2019-03-22

会议地点：

中国四川成都