摘要
采用Opti Struct对某型铁路扣件轨下垫板进行拓扑优化和自由形状优化,实现垫板结构轻量化设计.根据优化空间最大化原则,对垂向载荷工况进行拓扑优化、对极限载荷工况进行自由形状优化.使用Abaqus极限载荷扣件系统仿真模型对优化后垫板结构性能进行验证评价.结果表明:优化后的垫板性能基本不变,质量减少约10%,刚度满足设计要求.优化结果可为垫板轻量化设计提供参考.
To perform light-weight design on an elastic pad of the fastener under railway, the topologyand free shape optimization are performed on it. Based on the principle of maximum optimization space,the topology optimization is applied under vertical loads and the free shape optimization is applied underextreme loads. The structural performance of the optimized elastic pad is verified by the simulation modelof extreme load fastener system in Abaqus. The results show that the mass of the optimized elastic pad isreduced by approximately 1 0 % with the same performance and desired stiffness. The optimization resultscan provide references for the light-weight design of elastic plate.
出处
《计算机辅助工程》
2016年第5期18-21,28,共5页
Computer Aided Engineering
关键词
轨道
弹性垫板
轻量化设计
结构优化
拓扑优化
自由形状优化
railway
elastic pad
light-weight design
structure optimization
topology optimization
freeshape optimization
