Study On The Tank Semi-trailer Structural Design And Lightweight

This paper discusses the research status of vehicle structure's Lightweight around the world-wide, and analyses the development trend of the vehicle structure's Lightweight and the shortage of the research. On this basis, the paper proposes the application of finite element technology and intelligent optimization methods to analyze and optimize frame structure, in order to improve the structure and reduce the weight.Combined the requirements of the subject, the paper identifies the tank Semi-trailer's main technical parameters by the design calculation. According to parameters, the plane figure of the vehicle frame and the tank body by using AutoCAD. Three-dimensional model of the whole vehicle, the vehicle frame and the tank body are built and been finite element ANSYS. The tank Semi-trailer's strength is overall. The material utilization should be improved.The carriage is lightweight-structurally optimized through genetic algorithm, neural network and combinative optimization in this paper. The combinative optimization has the best efficiency compared with the others, reducing the weight of carriage by about 18.25%. The carriage is remodeled through the parameter result of combinative optimization and the five common work conditions are sequentially analyzed and verified by finite element method, and the result indicating that: the whole stress level and deformation range of carriage satisfies the security requests, the largest stress of carriage in any work condition is close to the yield limit of the material, and the utilization ratio is increased.The research in this paper supplies reference for general design of semi oil trailer, settling the corporate practical problems, meanwhile provides new thoughts and feasible route for optimization design of carriage, and offers good model for the research of similar products.