机械科学与技术2024，Vol.43Issue(5)：882-890,9.DOI:10.13433/j.cnki.1003-8728.20220249
金字塔点阵单元力学性能多目标优化
Multi-objective Optimization of Mechanical Performance of Pyramid Lattice Element
摘要
Abstract
In this study,the genetic algorithm(GA)and response surface method(RSM)are used to optimize structural parameters multi-objectively to maximize the ultimate specific uniaxial compression and specific pure shearing bearing capacity of pyramid lattice elements.The optimization result is verified by finite element simulation and experiment.The results show that the prediction results of the optimal structure based on the genetic algorithm are 30.1%and 91.6%higher than those of the conventional structure for the ultimate uniaxial compression and pure shearing bearing capacity,respectively.The finite element analysis results of the optimized structure are 39.7%and 90.5%higher than those of the conventional structure for the uniaxial compression and pure shearing bearing capacity,respectively.The experimental result of the optimal structure is 44%higher than that of the conventional structure for the ultimate uniaxial compression bearing capacity.The ability of the proposed optimization method was verified by both the finite element analysis and experiment and it can be applied in the design of lattice structures.关键词
金字塔点阵单元/力学性能/遗传算法/多目标优化Key words
pyramid lattice element/mechanical properties/genetic algorithm/multi-objective optimization分类
数理科学引用本文复制引用
张坤,李建,卢福聪..金字塔点阵单元力学性能多目标优化[J].机械科学与技术,2024,43(5):882-890,9.基金项目
国家自然科学基金项目(12002093)、广西自然基金项目(2018GXNSFBA281199)及中物院总体工程研究所科技专项(2020KJZ02) （12002093）
