Kinematics Characteristic Analysis and Structural Parameter Optimization of Twist Beam Rear Suspension

Abstract

The multi-body dynamics analysis is an important method to analyze the movement and dynamics characteristics of a car in modern vehicle design process . The twist beam rear suspension which is for rear wheel steering was widely equipped on front engine rear wheel drive vehicles . The modeling of twist beam rear suspensions is always difficult to describe accurately for its unique structural behaviour . First of all , a non-linear method based on multi-body dynamics was used to establish the dynamics model of the twist beam rear suspension system by using the ADAMS/Car . Secondly, the kinematics analysis of the rear suspension was realized and the main suspension parameters (toe angle, camber angle and wheel base) were calculated by changing wheel travel by means of ADAMS/Car . Finally , the suspension was optimized . The result shows that integrative use of ADAMS/Car and ADAMS/Insight in the kinematics analysis and optimized design of the suspensions is rapidly and effectively to design vehicle suspensions .

The Study of Optimization and Matching to Spring and Antiroll Bar Stiffness of Suspension for Multiresponse Target of Whole Vehicle under Sine-Swept Steering Input

“…After performing the opposite travel simulation on the vehicle's front and rear suspension's multibody dynamics models established in Figures 4 and 5, the curve of the wheel's camber angle with wheel's displacement is shown in Figure 16 is obtained [17]. In Figure 16, when the wheels bounce down, the camber angles of the front and rear suspension wheels (the inner wheel when turning) change to the positive camber direction.…”