Experimental Evaluation And Optimization Design Of Handling Stability Of FSC Racing Car

Handling stability is one of the main properties of automobiles.Good handling stability is not only an important embodiment of the handiness of the car,but also a key factor to ensure the safety of the car.Therefore,it is of great significance to attach importance to the optimal design of handling and stability in the development of racing cars for achieving excellent results in the race.This article takes the racing car developed by the Nanning University Formula Racing Team as the research object.Based on the introduction of the structure of the car and related theories,aiming at the stability of the car during the race,evaluation of vehicle handling stability by real vehicle test.Transient response under steering angle step input and snaking performance under typical driving conditions are selected as quantitative evaluation indexes.In order to obtain the relevant test data,according to the actual needs of the test and the structural conditions of the vehicle,this paper also designs and develops a set of on-board data acquisition system based on microcontroller to realize the dynamic data acquisition.The results of real vehicle test show that the transient response of steering wheel under step input is unqualified,and the snaking performance of typical driving conditions is still acceptable.Therefore,this paper proposes a new scheme for optimizing the design of racing cars.After lightening and improving the design of the original frame by finite element analysis,and then using ADAMS/Car module under the ADAMS environment,the mechanical modeling of the racing car suspension system is completed,and the wheel alignment parameters are taken as the optimization objective,and the position of the upper and lower arms and the articulation point of the frame are taken as the design variables to optimize the suspension parameters.Chemical design.Finally,using the ADAMS/Car module,the new racing scheme also uses the transient response and the snake performance as physical parameters to verify the simulation of the steering stability of the car.The test results show that the steering stability of the optimized car has been significantly improved,providing a scientific basis for the design of the new car.