液力变速器试验台U型支撑结构分析及优化

Analysis and Optimization of U-Shaped Supporting Structure of Hydraulic Transmission Test Bench

为改进液力变速器MA3610FA的U型支撑结构振动稳定性,避免变速器壳体结构破裂,对U型支撑结构进行动力学分析与优化设计。针对连接件提出四种结构,分析了不同结构的应力应变值,得到了新连接件结构4的振动稳定性优于原连接件结构;针对U型结构型变量较大提出了三种改进方法,改进后的U型支撑结构应变量减少了3.6793 e1mm;对支撑底座进行了拓扑优化,优化后的底座模型较优化前质量减少了12.6 kg;最后对优化后U型支撑结构进行实验,通过RMS显示振动速度比对,优化后的结构满足振动稳定性能要求,实现了U型支撑结构的轻量化设计。

In order to improve the problem of poor vibration stability of the U-shaped support structure dur‐ing the test of the hydraulic transmission MA3610FA,which caused the structure of the transmission shell to break,the dynamic analysis and optimization design of the U-shaped support structure were performed.Four types of structures were proposed for the connectors,and the stress and strain values of different struc‐tures were analyzed.It is obtained that the vibration stability of the new connector structure 4 is better than that of the original connector structure;then,for the larger variables of the U-shaped structure,three im‐proved method,the strain of the improved U-shaped support structure was reduced by 3.6793e1mm;then the topological optimization of the support base was carried out,and the optimized base model reduced the mass by 12.6kg compared with the optimized one;finally,the optimized U-shaped support structure Experi‐ments were carried out and the vibration speed comparison was displayed through RMS.The optimized structure meets the requirements of vibration stability,and the lightweight design of the U-shaped support structure is realized.