广西科技大学学报2024，Vol.35Issue(3)：24-31,8.DOI:10.16375/j.cnki.cn45-1395/t.2024.03.004
某自卸车车厢的多目标尺寸优化
Multi-objective size optimization of a dump truck carriage
摘要
Abstract
To reduce the manufacturing cost of the dump truck carriage,the lightweight structure was studied.The finite element modeling for the three-dimensional model of the carriage was carried out by using HyperMesh software.And then the static and dynamic characteristics of the finite element model were analyzed.The results met the design objectives and had certain room for optimization.However,due to the large number of design variables of the carriage,an improved sensitivity analysis method was introduced to select 6 sets key design variables from 38 sets of design variables.The Hamersley sampling method was used for 200 times of sampling,and the least square method and radial basis function were used to generate the response surface to build an approximate model.Then,the MOGA(multi objective genetic algorithm)was used to optimize the parametric approximate model with the stress and displacement of the carriage as constraints,the minimum mass and the maximum sixth order mode frequency as optimization objectives.The optimized results showed that while ensuring the static and dynamic structural performance of the carriage,the final optimized result reduced weight by 0.705 t,with a weight reduction rate of 10.34%,which achieved a significant weight reduction effect.关键词
车厢轻量化/哈默斯雷采样法/近似模型/多目标遗传算法(MOGA)Key words
lightweight carriage/Hammersley sampling method/approximate model/multi objective genetic algorithm(MOGA)分类
交通工程引用本文复制引用
赵铁棨,龚运息,唐毅林,邱崧..某自卸车车厢的多目标尺寸优化[J].广西科技大学学报,2024,35(3):24-31,8.基金项目
广西创新驱动发展专项资金项目(桂科AA22068055)资助 （桂科AA22068055）
