Transactions of Materials and Heat Treatment

Title：Multi-objective optimization on the transverse frame of roll change car

Authors： Ren Xueping Tan Yanyang Tian Kai

Unit： Inner Mongolia University of Science and Technology Baogang Group

KeyWords： response surface method finite element method parametric modeling multi-objective optimization transverse frame

ClassificationCode：TG122

year,vol(issue):pagenumber：2017,42(9):157-162

Abstract：

In order to satisfy the performance requirements of stiffness and light weight of the transverse frame of roll change car, a design method of multi-objective optimization is proposed based on the weight and stiffness as the object function. Firstly, the stress distribution and total deformation of the transverse frame were obtained through static analysis. Then, the multi-objective optimization mathematical model of weight and stiffness determined by design variables was established. Furthermore, the appropriate analysis samples were selected by central composite design (CCD) experiment method, and the static characteristics of the transverse frame at these samples were calculated and analyzed by the software ANSYS Workbench. Finally, subopitimum initial samples were selected by Shifted Hamersley sampling method to reduce the computational scale, and the multi-objective optimization of getting lighter weight and smaller total deformation were conducted to obtain the Pareto optimal solution by the multi-objective genetic algorithm. The simulation results show that the maximum deformation is reduced by 10%, the weight of the traverse frame is decreased by 3%, and the deformation and stress distribution are more reasonable.

Funds：

国家自然科学基金资助项目（21366017）；内蒙古高等学校科学研究项目（NJZY16154）；内蒙古自治区研究生教育创新计划资助项目（S20161012709）

任学平（1963-），男，博士，教授 E-mail：rxp@imust.cn

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