拉伸工字型截面管中心对称裂纹应力强度因子  

Stress Intensity Factors of Symmetrical Cracks in Tensile I-shaped Section Tube

作　　者：叶帆胜 张继旭 糜启龙 Ye Fansheng;Zhang Jixu;Mi Qilong(School of Civil Engineering,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学土木工程学院,辽宁抚顺113001

出　　处：《山东化工》2021年第1期139-140,共2页Shandong Chemical Industry

摘　　要：异型管作为建筑,化工等领域的基本构件,其安全性一直以来是人们的关注焦点,而大多数异型管的破坏源于裂纹。应力强度因子作为研究断裂的基本参数,其计算方法的研究具有重要意义。以工字型截面管中心对称裂纹为例,运用J2积分以及梁的变形理论,构建其在拉伸载荷作用下的应力强度因子。As a basic component in construction,chemical industry and other fields,the safety of special-shaped pipes has always been the focus of attention,and most of the damage of special-shaped pipes originates from cracks.The stress intensity factor is a basic parameter for studying fracture,and the study of its calculation method is of great significance.In this paper,taking the center symmetrical crack of an I-shaped section pipe as an example,using J2 integral and beam deformation theory,the stress intensity factor under tensile load is constructed.

关 键 词：工字型截面管 对称裂纹 应力强度因子 J2积分 断裂 

分 类 号：O346.1[理学—固体力学]