Research On Structural Unifinication Transform Of Motor Tricycle Frame

Motor tricycle has gotten vigorous development because of meeting the national conditions of China. As the major parts of motor tricycle, plenty of the frames fracture because of frame's traditional structural defect, It has become the program of the industrial development solution of urgent need that the improvement of frame structure is studied . Unifinication transform is the important development of the frame structure of motor tricycle tendency.This paper utilizes CAD and CAE in frame unifinication transform research , It is helpful somewhat explore and try in tricycle frame structural design and improvement,Becuse this is certain promote role for raising design quality , shorten development cycle and reduction to design cost, promote the autonomous development level of motorcycle production enterprise. The major research content of paper is as follows :â‘ Taking keel frame as foundation and using CATIA V5 softwares'three- dimensional build mould function,the paper have established the three-dimensional mould of frame and a kind of practical effective frame finite elemen analysis model;â‘¡Bend operating mode, pure torsion operating mode and curved and torsion combined action for the finite elemen analysis model of frame, the analysis calculation of operating mode gets node displacement distribution value and the stress of frame corresponding operating mode, have found out the weak link of frame.â‘¢On foundation of analysing the weak link of frame, This paper made the specific scheme of structural unifinication transform, and have established the three-dimensional model and finite elemen analysis model of overall frame.Unifinication transform of frame structural adopts the structure of " subplot tenon ", Under equal load and analysis pattern , curved stress,torsion stress and warp of overall frame drop relatively considerably. This paper made out the node displacement distribution value and stress of the overall frame as it bends under equal load and analysis pattern, pure torsion operating mode and bend and twist the analysis calculation of the operating mode of combined action. Practice proves that frame unifinication transform reduced stress level of frame , deformed little, cured frame early fracture , and is raising truckload safety, comfortableness and product additional value and other aspect , have gotten notable effect. â‘£Compare improvement, the calculation of around frame combines the actual operation condition of frame as a result, the validity that evaluates structural unifinication transform points out tendency and the direction of frame structural transform.