大型快锻液压机法兰支撑液压缸优化设计及参数敏感性分析  

Optimum Design and Parameter Sensitivity Analysis of Flange Supported Hydraulic Cylinder in Large High Speed Forging Hydraulic Press

作　　者：王春辉[1] 赵升吨[1] 谢嘉[1] 

机构地区：[1]西安交通大学机械工程学院,陕西西安710049

出　　处：《锻压装备与制造技术》2009年第2期42-46,共5页China Metalforming Equipment & Manufacturing Technology

摘　　要：针对目前液压机中关键零件——法兰支撑式液压缸经验性设计方法的不足,以国内最大型号的45MN快速锻造液压机的主液压缸为应用背景,建立了液压缸优化模型,进一步在ANSYS软件中建立液压缸的参数化优化模型。先后利用ANSYS优化模块中的零阶方法和一阶方法对其主要参数进行优化,利用等步长搜索工具进行参数敏感性分析,优化后液压缸的重量相对减小了15%,减重达7.13t,优化效果显著。进一步利用ANSYS软件进行有限元分析,应力分析结果证明了优化设计结果的正确性。该方法将有限元法和优化设计方法结合起来,既能保证设计结果的准确性,又可使结果最优化。According to the deficiency of traditional method in designing flange supported hydraulic cylinder of hydraulic press, a parameter model for hydraulic cylinder of 45MN high-speed forging hydraulic press has been established. The sub-problem approximation method and first order method have been adopted to optimize the parameters of the cylinder. The sweep generation method has been adopted to analyze the parameter sensitivity. The weight of hydraulic cylinder has been relatively decreased by 25%,up to 7.13 tons and the optimization effect is obvious. Finally, the finite element method has been adopted to analyze the optimal result, and the stress analysis has verified the validity of this method. The hybrid method combining FEA and optimum design ensures the validity and the optimization of the result.

关 键 词：机械制造 液压缸 液压机 结构优化设计 

分 类 号：TG315.4[金属学及工艺—金属压力加工]