大口径真空蝶阀阀体非线性稳定性分析  

Nonlinear stability analysis of large-diameter vacuum butterfly valve body

作　　者：杨繁隆 冯万平[1] 陆欢 YANG Fanlong;FENG Wanping;LU Huan

机构地区：[1]江南阀门有限公司,浙江温州325013

出　　处：《现代机械》2023年第6期36-39,共4页Modern Machinery

摘　　要：非线性有限元法是服役于负压工况的压力容器常用的稳定性分析方法,但少有阀门企业针对真空阀在真空工况下是否产生失稳现象进行分析。本文以本公司自产DN1600真空蝶阀阀体为载体,基于双线性材料曲线及小位移扰动,采用弧长法对临界载荷点进行求解,得到其最大失稳载荷为-6.975 MPa,满足真空工况使用条件。Nonlinear finite element method is a commonly used stability analysis method for pressure vessels used in negative pressure conditions,but few valve companies analyze whether vacuum valves are unstable under vacuum conditions.In this paper,the valve body of DN1600 vacuum butterfly valve produced by Jiangnan Valve Co.Ltd.is taken as the research object.Based on bilinear material curve and small displacement disturbance,the arc length method is used to solve the critical load point,and the maximum instability load is-6.975 MPa,which meets the operating conditions under vacuum conditions.

关 键 词：真空蝶阀 非线性分析 弧长法 

分 类 号：TH134[机械工程—机械制造及自动化]