| 环状U型隔膜应力分析和结构优化设计 |
| |
| 引用本文： | 邓鸿英,张生昌,郑英臣.环状U型隔膜应力分析和结构优化设计[J].排灌机械,2012(5):578-582. |
| |
| 作者姓名： | 邓鸿英 张生昌 郑英臣 |
| |
| 作者单位： | [1]浙江工业大学机械工程学院,浙江杭州310032 [2]杭州杭氧低温液化设备有限公司,浙江杭州310004 |
| |
| 基金项目： | 浙江省自然科学基金资助项目（LY12E05023） |
| |
| 摘 要： | 为了降低新型液压隔膜泵用环状U型隔膜总体应力,满足应力均匀分布的设计要求,提高隔膜设计效率,结合有限元法与参数优化法,对环状U型隔膜进行了应力-应变分析和结构优化设计.利用Ansys软件的非线性分析工具,通过对不同位移载荷作用下的环状U型隔膜应力分布图的分析研究,总结了环状U型隔膜应力分布形状以及应力最大和最小位置等规律,并据此对应力最大的隔膜固定、运动支撑端和自由挠曲半圆过渡段进行了结构优化.应用Ansys一阶参数优化方法基本原理,以隔膜的最大应力值作为状态限制变量,以隔膜的单元应力之和作为目标函数,计算出了环状U型隔膜的优化结构相关参数.有限元分析结果表明,经优化设计后的环状U型隔膜在不同位移载荷作用下,最大应力值由0.083 MPa降至0.027 MPa,整体应力值下降,内外表面应力分布均匀,两端支撑部位应力集中趋于缓和.
|
| 关 键 词： | U型隔膜 应力 结构 有限元 参数优化 |
Stress analysis and structure optimization design of annular U-diaphragm |
| |
| Deng Hongying,Zhang Shengchang,Zheng Yingchen.Stress analysis and structure optimization design of annular U-diaphragm[J].Drainage and Irrigation Machinery,2012(5):578-582. |
| |
| Authors: | Deng Hongying Zhang Shengchang Zheng Yingchen |
| |
| Institution: | 1.College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,Zhejiang 310032,China;2.Hangzhou Hangyang Cryogenic Liquefy Equipment Co.Ltd.,Hangzhou,Zhejiang 310004,China) |
| |
| Abstract: | To reduce total stress level,meet the design requirement on even stress distribution and improve design efficiency of annular U-diaphragm in hydraulic diaphragm pumps,the stress and strain in U-diaphragm were analyzed and its structure was optimized by using the FEM and parameter optimization method.The stress distribution patterns,peak stress locations etc in the U-diaphragm model were summarized based on the stress distributions in the diaphragm under a series of displacement loadings calculated by conducting nonlinear analyses in FEM software Ansys.Subsequently,the structures of diaphragm end fixing clamps,moving support end and free deflection semicircle transitional segment were optimized.The parameters relating to diaphragm structure were determined by using the parameter optimization method in Ansys when the maximum stress in the diaphragm was used as a limited state variable and the total stress in elements was chosen as an objective function.The finite element analysis results indicated the maximum peak has been reduced to 0.027 MPa from 0.083 MPa in the annular U-diaphragm after the optimization,suggesting the diaphragm is going to be subject to a significantly lowered stress level.Moreover,a uniform stress distribution occurred in the inner and outer surfaces of the diaphragm,and the stress concentration effect tended to be moderate. |
| |
| Keywords: | U-diaphragm stress structure finite element parameter optimization |
| 本文献已被 维普 等数据库收录！ |
|
