基于自适应近似模型的液压挖掘机轻量化设计  

Lightweight design of hydraulic excavator based on adaptive approximation model

作　　者：张贺 葛晓波 李勇 邵晓东[1] ZHANG He;GE Xiaobo;LI Yong;SHAO Xiaodong(School of Mechano-Electronic Engineering,Xidian University,Xi’an 710071,China;Jiangsu XCMG State Key Laboratory Technology Co.,Ltd.,Xuzhou 221004,China;Xuzhou XCMG Mining Machinery Co.,Ltd.,Xuzhou 221004,China)

机构地区：[1]西安电子科技大学机电工程学院,陕西西安710071 [2]江苏徐工国重实验室科技有限公司,江苏徐州221004 [3]徐州徐工矿业机械有限公司,江苏徐州221004

出　　处：《计算机集成制造系统》2023年第12期4051-4062,共12页Computer Integrated Manufacturing Systems

基　　金：国家重点研发计划资助项目(2020YFB1711605)。

摘　　要：为解决挖掘机工作装置传统设计保守,导致大量能源资源消耗以及严重的环境排放问题,提出一种基于自适应近似模型的结构轻量化设计方法。计算结构设计参数对质量、变形和应力的综合贡献度,筛选作用显著的参数作为设计变量。构建近似模型资源池,根据最大的决定系数自适应构建近似模型的响应面。在此基础上建立以最小质量为目标,应力与变形为约束的优化模型,结合遗传算法开展结构轻量化设计。结果表明所提方法实现某型号液压挖掘机动臂减重9.38%,并通过仿真验证应力和变形满足动臂的设计要求。The traditional design of excavator working device is conservative,which leads to a large amount of energy,resources and environmental emissions.To solve this problem,a structure lightweight method based on adaptive approximate model was proposed.The comprehensive contributions of the design parameters of the boom to mass,deformation and stress were calculated,and the parameters with significant effects were selected as design variables.The resource pool of the approximate model was constructed,and the response surfaces of the approximate model were built adaptively according to the maximum determination coefficient.On this basis,an optimization model with the minimum mass as the target and stress and deformation as the constraint was established.Combined with the genetic algorithm,the lightweight design of the structure was carried out.The results showed that the proposed method could reduce the weight of a certain type of hydraulic excavator boom by 9.38%,and the finite element simulation verified that the stress and deformation met the design requirements of the boom.

关 键 词：自适应近似模型 挖掘机 轻量化设计 熵值TOPSIS 绿色设计 

分 类 号：TH621[机械工程—机械制造及自动化] TH164