Transactions of Materials and Heat Treatment

Title：Non-probabilistic optimization design of frame structure for 150 kN biaxial tensile test machine

Authors： Guan Bobin 1 2 Zhang Yisheng1 2 Zhao Zhe2 3 Wu Xiangdong 2 Wan Min 2

Unit： 1.Science and Technology on Space Physics Laboratory China Academy of Launch Vehicle Technology 2.School of Mechanical Engineering and Automation Beihang University 3.Beijing Institute of Precision Mechatronics and Controls

KeyWords： biaxial tensile test machine non-probabilistic optimization structural lightweighting uncertainty analysis topology optimization

ClassificationCode：TH122

year,vol(issue):pagenumber：2025,50(7):173-182

Abstract：

For the problem of heavy structure and insufficient precision of biaxial tensile test machine designed by the traditional method, the non-probabilistic optimization design framework combining Kriging model and Taylor expansion was proposed and applied to the lightweight design of 150 kN frame structure. Then, the non-probabilistic optimization model of frame structure was established, and a solution process was proposed. Furthermore, the uncertainty of frame material properties was tested and characterized, and the uncertainty analysis on the topological optimized frame structure was conducted by Kriging model and Taylor expansion. Finally, the frame structure was optimized by genetic algorithm, and the analysis results show that the material properties of 150 kN frame are uncertain, and it is difficult to obtain the optimal lightweight frame structure by topology optimization. Its deterministic result shows the risk of violating the design requirements. Thus, the proposed non-probabilistic optimization design framework effectively achieves the structure lightweighting and ensure that it strictly meets the design requirements,the 150 kN frame after topology optimization achieves a weight reduction of 12.95%.

Funds：

国家自然科学基金资助项目 (51875027)

作者简介：关铂镔（1996-），男，博士，工程师 E-mail：2725385673@qq.com 通信作者：吴向东（1970-），男，博士，副教授 E-mail：wuxiangdongbuaa@163.com

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