Design Research And Simulation Analysis Of A New Type Of Automobile Steering Mechanism

In this age of high-speed,staffs involved in research and design put more and moreattention to the steering precision of automobile. The design of steering mechanism playsa decisive role for the steering precision,and it also has a certain influence on the drivingsafety,fuel consumption, driving comfort and tyre life. Therefore,the complete rollingsteering of automobile is an important research direction.The purpose of this paper is design a new-type of complete rolling automobilesteering mechanism. Based on the Ackerman Steering principle, and on the basis of thestructure and steering error of the traditional automobile steering mechanism, through thecomprehensive application of the theoretical design and CAE technology, this paper putsforward a symmetric trapezoidal chute-type complete rolling automobile steeringmechanism by used reverse design which references to the relevant parameters of oneautomobile steering mechanism.In SolidWorks, this paper conducts modeling andsimulation of the rigid-body system, and compares the kinematic and dynamicperformance between the traditional and the new mechanism. In ADAMS, this paper buildsrigid-flexible coupling system of the new mechanism, conducts its simulation on kinematicperformance and force of the key parts. In HyperWorks, this paper conducts finite elementanalysis and second-design of structure for the key parts, then conducts finite elementanalysis on the improved structure for verification.Results of the rigid-body system simulation show that the new mechanism can fullyrealize complete rolling steering which the traditional mechanism can’t realize,and theyhave the similar dynamic performance. Results of the rigid-flexible coupling systemsimulation show that in the more actual condition that parts may occur deformation, thenew mechanism also can fully realize complete rolling steering, and the simulation hasobtained the force parameters of the key parts. Results of the finite element analysis showthat the key parts meets the strength and stiffness requirements,and there is room foroptimization.Results of the analysis for verification show that the Second-design for thekey parts has realized lightweight and saving room,and not only does the key parts meetthe strength and stiffness requirements,but also its maximum stress and displacement arelower than before,this has fully proved the rationality of the Second-design.