Structural Optimization Design Of Aliuminium Alloy Wheel

Structural optimization is one of the hot research fields in modern times, and as oneof the important components as to the the safety performances of the whole motor vehicle,the wheel has an extremely important influence in the safety performance and thereliability of the motor vehicle. This paper focuses on the structure optimization design ofthe wheel, and realizes the lightweight by the method that combines the computertechnology and finite element analysis together.This paper narrates the background of the light-weight research comprehensively atfirst, proposes that the research contents may include the key technologies such as thewheel’s material light-weight, the manufacturing technology light weight and the wheel’sstructural optimization etc., introduces the design method of structural optimi- zation,realizes the development history and the current status of the alloy wheel from reality, andsum up the main content and the signification that this paper will research by combiningfinite element analysis and structure optimization together.In order to use the finite element method more effectively, this paper introduces thedevelopment process of the finite element and solving problem ideas in brie,. and analysesthe mechanical structure of the non-individual body, elastic mechanics theory, and thebasic theory of the finite element analysis. Considering the realization to structuraloptimization design theory and familiarity with the software, this issue chooses finiteelement software ANSYS and ISIGHT to analyse the structure of the wheel.This paper establishes the reasonable finite element mathematical model of thebending and radial tests of the wheel and proceeds experimental study to the wheel which islabeled D001 by utilizing static-load finite element analysis. It is worked out that thecracking tendency is accord with the destruction of the wheel in the tests, which verifiesthe correctness of the finite element method.Based on the correct analysis to the bending and radical tests, this paper undertakesstructure optimal calculate to the wheel by the software ISIGHT. After the comparison ofthe optimization methods, it’s found that Sequential Quadratic Programming MethodNLPQL can solve the optimization problem of the wheel more efficiently and accurately. After the optimal calculation to the bending tests, the weight of the wheel reduces to5.649% of the original one, and after the optimal calculation to the radical tests, the weightof the wheel reduces to 5.636% of the original one.