某型半挂车车架的多工况拓扑优化设计  

Multi-Condition Topology Optimization Design of a Semi-Trailer Frame

作　　者：周璇 王兵 景超 郭钧航 李贤 Zhou Xuan;Wang Bing;Jing Chao

机构地区：[1]湖北瑞雅特汽车有限公司,湖北省441300 [2]武汉理工大学交通与物流工程学院

出　　处：《工程机械》2025年第4期111-116,I0005,I0006,共8页Construction Machinery and Equipment

摘　　要：分析半挂车车架的三维模型,并建立车架整体结构的有限元模型。在4种典型工况下对原车架进行静力学分析,确定以车架横梁作为拓扑优化的设计域。对单工况优化后的车架进行刚度分析,并根据各工况下车架刚度的变化,结合层次分析法对车架进行多工况拓扑优化。结合多工况拓扑优化结果和可制造性需求,重新设计车架横梁。最终对新车架的静态特性进行分析,结果表明,在车架质量减少3.5%的情况下,横梁的应力集中有所改善,有效地兼顾了车架的轻量化和安全性设计要求。The three-dimensional model of the semitrailer frame is analyzed,and a finite element model of the overall frame structure is established.Static analysis of the original frame is carried out under four typical working conditions to determine the frame crossmember as the design domain for topology optimization.The stiffness of the frame optimized under a single working condition is analyzed,and based on the changes in frame stiffness under each working condition,multicondition topology optimization of the frame is carried out by combining the analytic hierarchy process.In conjunction with the multi-condition topology optimization results and the manufacturability requirements,the frame crossmember is redesigned.Finally,the static characteristics of the new frame are analyzed.The results show that,with a reduction of 3.5%in the frame mass,the stress concentration of the crossmember is improved,which effectively balances the lightweight and safety design requirements of the frame.

关 键 词：半挂车 多工况 拓扑优化 层次分析法 

分 类 号：U46[机械工程—车辆工程]