桥式起重机主梁多工况拓扑优化设计研究  

Research on Topology Optimization Design of Multiple Loading Conditions of Bridge-Type Crane Bias-Rail Girder

作　　者：朱强[1] 刘嘉星 ZHU Qiang;LIU Jia-xing(College of Mechanical Engineering,Zhengzhou University,He’nan Zhengzhou 450001,China)

机构地区：[1]郑州大学机械工程学院,河南郑州450001

出　　处：《机械设计与制造》2021年第5期20-23,28,共5页Machinery Design & Manufacture

基　　金：2015年国家科技支撑计划项目(2015BAF06B06-6):桥式起重机械轻量化关键技术研究与应用。

摘　　要：利用HyperMesh前处理软件与OptiStruct求解器,以体积分数与静态位移为约束,以三种典型静态工况下对应的最小柔度为目标函数,基于SIMP变密度法与数学折衷规划优化法,建立了桥式起重机偏轨箱形主梁多工况拓扑优化模型。经有限元分析计算后得到了同时满足多种工况载荷的起重机主梁拓扑结构。根据拓扑优化结果设计出主副腹板新型开孔式结构,随后进行了主梁重构后强度、刚度与稳定性的有限元分析验证。实现了对偏轨箱形主梁经拓扑优化后合理减重的目的,为起重机主梁的结构创新设计提供了一定指导。Based on the HyperMesh and the OptiStruct,the volume fraction and static displacement are constrained,and the corresponding minimum compliance is used as the objective function under three typical static conditions,using SIMP variable density method and compromise optimization method,a topology optimization model for multiple loading conditions bridge-type crane bias-rail box girder is established.After the finite element analysis and calculation,the topographic structure of the crane girder that satisfies the multiple loading conditions is obtained.According to the results of topology optimization,a new open-cell structure of the main and auxiliary webs was designed,and then the finite element analysis of the strength,stiffness and stability of the girder was carried out.The purpose of reasonable weight reduction after the topology optimization of the bias-rail box girder is realized,which provides a certain guiding role for the structural innovation design of the crane girder.

关 键 词：起重机 偏轨箱形主梁 多工况 拓扑优化 

分 类 号：TH16[机械工程—机械制造及自动化]