矿用自卸车车架结构多目标拓扑优化研究  

Multi-objective Topology Optimization of a Mining Dump Truck Frame

作　　者：蒋金星[1] 谷正气[1,2] 米承继[1] 王玉涛[1] 臧晓蕾[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082 [2]湖南工业大学,株洲412007

出　　处：《中国机械工程》2013年第8期1028-1032,共5页China Mechanical Engineering

基　　金：国家高技术研究发展计划(863计划)资助项目(2012AA041805);国家自然科学基金资助项目(50975083);湖南省科技重大专项(2009GK1002);汽车车身先进设计制造国家重点实验室计划资助项目(61075001)

摘　　要：为给矿用自卸车车架结构设计和优化提供参考,针对国产首台300t矿用自卸车工作环境极其复杂、行驶路况极为恶劣以及载重量大而导致车架结构容易破坏失效的情况,采用SIMP变密度法对其进行拓扑优化研究,以多工况下的刚度和一阶振动频率为目标,并利用折衷规划法定义的多刚度和高频率的多目标拓扑优化函数进行优化。依据优化结果设计了新的车架,并比较了经验设计下的车架和新车架的刚度和频率。研究结果表明:采用多目标拓扑优化方法指导设计的车架刚度和频率都有显著提高,改善了车架的使用性能,能使车架更好地在恶劣环境中使用。In order to guide the structural design and optimization of frame of a first domestic min- ing dump truck, the local failure or damage of this component were concerned,which was due to terri- ble running road and overweight. Based on SIMP（solid isotropic material with penalization） method and variable density method, topology optimization of frame was studied, where both the stiffness and first--order frequency were regarded as optimization objectives under multiple loading conditions. Compromise programming method was utilized to define multi--objective topology optimization func- tion of multi--stiffness and frequencies. Compared with stiffness and frequency of original frame, it is shown that the performances of optimized structure are definitely improved. Which is extremely help- ful to design and optimize frame of mining dump truck so that it is able to work well under terrible sit- uation.

关 键 词：矿用自卸车 变密度 拓扑优化 多目标 折衷规划法 

分 类 号：U463.1[机械工程—车辆工程]