管道开口补强的理论与仿真分析  

Theory and Simulation Analysis of Pipeline Opening Reinforcement

作　　者：李旭东[1] 郭良斌[1] 孙瑛[1] 

机构地区：[1]武汉科技大学机械自动化学院,湖北武汉430081

出　　处：《铸造技术》2016年第11期2472-2475,共4页Foundry Technology

基　　金：国家自然科学基金资助上项目(51475341)

摘　　要：通过比较薄壳理论法和有限元应力分析两种补强计算方法,验证焊接支管形式的主管结构是否符合强度要求。薄壳理论法求解复杂,推导主管开口处的环形薄膜应力公式,计算结果表明环形薄膜应力是管道开孔处的最大应力。通过ANSYS有限元建模求解,通过应力分析云图看出最大应力位于内表面的连接处。在工程实践中可以分别采用不同的方法进行设计,对比分析相应的设计结果,提高压力管道设计的安全性。Through analysis and comparison of the main methods of concentrated reinforcement calculation, the equal area method and the finite element stress analysis method are used to verify whether the administrative structure of different weld branch form meets the strength requirements. The solving process of shell theory is quite complex： And the annular film stress in the pipe openings is the biggest. The maximum stress is located at the inner surface of the connection. The analysis results show that the finite element stress method has wider range of application, and it is more accurate. The safety of designing of pressure pipe can be improved according to validation and comparison between several methods.

关 键 词：压力容器 开孔补强 分析法 有限元法 

分 类 号：TH49[机械工程—机械制造及自动化]