T-2-2-2 Performance Analysis and Parameter Optimization of the Parallel Torsion Bars and Dual Wishbones Suspension

抄録

This paper presents a design method for the parallel torsion bars and dual wishbones suspension. The suspension's topological structure is represented by a graph. Base on the theory of multibody dynamics the suspension mathematical model has been built. The calculation method for the suspension stiffness is formulated and the matching relation between the stiffness of the upper and lower torsion bars is analyzed. The relation between the suspension and whole vehicle performance is discussed in this paper, such as the influence of guide mechanism size parameter on suspension stiffness, and kinematics characteristic. The vehicle maneuverability is also considered in this paper. At last we propose an optimization model of the suspension guide mechanism size and angle parameters. An application suspension model is formed and analysis of the suspension is performed. The analysis results are confirmed by the example.