Influence of the antiroll bar stiffness on the handling stability of passenger car
                                                                     QIU Weiming, ZHU Shuwei
          (Zhejiang Qiuweiming Skills to Master Studio, Taizhou Radio&Television University, Taizhou 318000, China)

Abstract: Aiming at the problem of the influence of the antiroll bar on the handling stability of the passenger car, the relationship between the antiroll bar and the antirolling ability of the vehicle was studied. A simplified mathematical model of passenger car was proposed, and the relationship between the roll angle of the vehicle and the stiffness of the antiroll bar was established. The influence of the stiffness of the antiroll bar on the roll of the vehicle was obtained by analyzing the simplified mathematical model of a passenger car. Based on ADAMS, the vehicle model was established, and the influence of the antiroll bar stiffness of the front axle/rear axle to the handling stability was obtained through the test and simulation under the two working conditions of intermediate position steering and steady state rotation. The simulation results show that with the increase of the stiffness, the roll angle of the frame decreases nonlinearly, and the slope of the roll angle curve decreases gradually.The simulation results indicate that the simulation results are consistent with the theoretical analysis results, and provides a theoretical basis for the stiffness design of antiroll bars.

Key words: handling stability; antiroll bar; stiffness; roll angle