基于响应面法的多节伸缩臂设计优化  

Optimization Design of Telescopic Booms Based on Respond Surface Method

作　　者：唐林 许志沛[1] 贺田龙 敖维川 TANG Lin;XU Zhi-pei;HE Tian-long;AO Wei-chuan(School of Mechanical Engineering,Southwest Jiaotong University,Sichuan Chengdu610031,China)

机构地区：[1]西南交通大学机械工程学院

出　　处：《机械设计与制造》2020年第2期83-86,共4页Machinery Design & Manufacture

基　　金：中央高校基本科研业务费专项资金资助（2015ZT03)

摘　　要：伸缩臂作为在施工作业的机械手臂具有广泛的应用,且其自重对支承它的下部构造也有至关重要的影响,故合理的设计伸缩臂结构在相应施工机械研发过程中占有重要地位。对于通常设计的伸缩臂在强度和刚度上有较大的富裕量,在满足力学性能的基础上,通过简化伸缩臂结构,建立有限元参数化模型,以伸缩臂的外形尺寸为设计变量,强度、刚度、承压稳定性为约束条件,整体重量为目标函数,利用ANSYS和ISIGHT软件,建立目标函数的二阶响应面近似模型,并运用遗传算法对模型寻优求解。研究结果表明,伸缩臂整体自重下降19.06%。相对于传统优化设计,效率和精度得到了明显提高,对同类伸缩臂结构优化设计方法对比及优选有一定的指导意义。Telescopic boom has a wide range of applications as a mechanical arm in the construction work,and its weight has a crucial influence on the structures that supporting it.Therefore,the reasonable design of the telescopic arm structure plays an important role in the development of the corresponding construction machinery.The general designs of telescopic boom structure are conservative,so the strength and stiffness have a large margin.On the condition of meet the mechanical properties and simplify the structure of telescopic boom,a finite element parametric model is established.The dimension of the telescopic boom is the design variable,the strength,stiffness and pressure stability as the constraint condition,and the overall weight is the objective function.Comprehensive use the software of ANSYS and ISIGHT,establishing the second-order respond surface approximation model of the objective function,and using genetic algorithm method to solve the approximate model.The result show that the overall weight of the telescopic boom has reduced by 19.06%.Compared with the traditional optimization design,efficiency and accuracy have been significantly improved,which is of great significance to the comparison and better selection of optimization design for similar telescopic boom structure.

关 键 词：伸缩臂 响应面法 优化设计 遗传算法 

分 类 号：TH16[机械工程—机械制造及自动化] TH122