高压管汇三通管件有限元及疲劳断裂分析  

Finite Element and Fatigue Fracture Analysis of Tee Joints of High Pressure Pipe Joints

作　　者：刘春城[1] 杨春秋[1] 沈雄伟[1] 

机构地区：[1]大连理工大学工程力学系,辽宁大连116023

出　　处：《北华大学学报（自然科学版）》2000年第4X期360-364,共5页Journal of Beihua University（Natural Science）

基　　金：辽宁省横向委托项目!(油计发[1998]2 3号)

摘　　要：应用固体力学中的有限元分析理论对高压管汇的典型构件－三能管分别在荷载工况为50，70，100MPa下进行分析计算，找出最大应力和最大位移所在位置，并在此基础上应用相应的断裂力学准则对此构件进行疲劳寿命分析、一次性失稳断裂分析及裂纹扩展寿命分析，从而为高压管汇的正确和安全使用提供了可靠的依据。The finite element theory of solid mechanics was applied on the analysis and calculation of typical component tee joints of high pressure pipe joints under load case of 50?MPa, 70?MPa,100?MPa.The maximum stress has been obtained in the process. Based on it, the corresponding rules of fracture mechanics were applied on the analysis of fatigue life span, one off losing stability fracture and crack growth life. As a result, it can provide credible basis for the use of high pressure pipe joints in correct and safe way.

关 键 词：高压管汇 三通管件 有限元 疲劳寿命分析 断裂力学 最大应力 最大位移 

分 类 号：U173.2[交通运输工程]