The Design And Research On Independent Suspension Drive Axle With A Single Trailing Arm And Two Transversal Torsion Bars

In this paper,from the view of system simulation,the independent suspension drive axle with a single trailing arm and two transversal torsion bars which is used in the prototype of rhombic new conceptual eleetic vehicle was researched.In this paper.the basic components of automotive suspension system were briefly introduced.The influence that the suspension kinematics and elastic kinematics act on the automotive performance was emphasized discussed. The basic principles of system simulation and ADAMS,the system simulation software were presented.The methods to decide the main performance parameters of a suspension were recommended.For this independent suspension with a single trailing arm and two transversal torsion bars,this paper calculated its partial frequency,vertical stiffness,roll stiffness,the positions of roll center and pitch center.Its 3D model was built through using UG software.Its simulation model was built by ADAMS software,including multi-rigid-body dynamic model and flexible multi-body dynamic model.Through simulating the multi-rigid-body dynamic model,this suspension's elastic property was researched,and the problem in design scheme was found,which was that the asymmetry of this suspension's left and right side structure resulted in the difference of left and right tire load.For the reason of that the trailing arm's lack of rigidity resulted in its large deformation and large negative camber angle,this trailing arm's improved scheme was presented.and its flexible multi-body dynamic model was simulated in vertical load ,lateral load.longitudinal load working conditions,then the influence that the trailing arm's deformation acted on the wheel's orientation parameters was gained and validated that the trailing arm's improved scheme was feasible.In this paper,the design scheme of anti-roll stabilizer was presented.The torsion stiffness of anti-roll bar,the suspension's roll stiffness at this stabilizer working were calculated.This was the last task of this suspension design and theoretical computation.