Study On Structure Analysis And Optimization Of Heavy Truck's Frame Based On ANSYS

Frame is as an important assembly bearing loads of an automobile,which all kinds of loads will pass to,and as a result the performance of frame structure affects whether the automobile design is successful or not.Using finite element method to analyze automobile frame structure and to take frame structure optimization into account makes sense in improving automobile performance,reducing the cost of design and automotive manufacture and increasing capability of market competition.ANSYS software takes on unexampled advantages in static analysis, dynamic analysis and optimization design etc by right of its powerful analysis function and high reliability.Through studying Pro/E and ANSYS software the FEA model of a heavy truck with solid elements was built.Based on the model the static and dynamic performance of the truck's frame structure was studied.A topological optimization model and a simple optimization model was built based on solid elements.With the objection that the volume of the frame is minimal,the carling section dimensions was optimized and the results of optimization was analyzed.This paper analyzes the principles and methods of optimization design,which can be generalized to shell element model.The design variables, state variables and objective functions can be adjusted to meet the actual needs.Through the finite element simulation and optimization of a heavy truck frame structure some useful conclusions has been got for the design of the frame.