Flat Ride; Problems and Solutions in Vehicle

Nonlinear engineering: Modeling and application

article

H. Marzbani¹ 

[1] School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University

关键词: Flat ride;    Maurice Olley;    Optimal suspension;    Vehicle vibrations;    Vehicle dynamics;    Suspension design;    Suspension optimization;   

DOI  :  10.1515/nleng-2013-0002

来源: De Gruyter

【 摘 要 】

Flat ride is the condition in which the uncomfortable pitch oscillation of the vehicle body turns into more tolerable bounce oscillation, when a car hits a bump in forward motion. Based on experimental results, Maurice Olley discovered and introduced two conditions for flat ride: 1: The radius of gyration in pitch should be equal to the product of the distance from the mass centers a 1 ; a 2 of the front and rear wheels of the car (r 2 = a 1 a 2 ). 2: The rear suspension should have around 20% higher rate then the front. The equation r 2 = a 1 a 2 makes the car to be considered as two separated uncoupled mass-spring systems of front and rear suspensions. In this study, we will analytically review the flat ride conditions and provide design charts to satisfy the required conditions. The nonlinear practical model of shock absorbers modifies the conditions which were based on linear models.

【 授权许可】

Unknown