STRESS INTENSITY FACTOR FOR CRACKED FLAT-ELLIPTIC CROSS-SECTION PIPE

LI Chong; XIE YuJun

doi:10.16579/j.issn.1001.9669.2017.02.030

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STRESS INTENSITY FACTOR FOR CRACKED FLAT-ELLIPTIC CROSS-SECTION PIPE

更新时间：2022-09-22

- STRESS INTENSITY FACTOR FOR CRACKED FLAT-ELLIPTIC CROSS-SECTION PIPE
- Journal of Mechanical Strength Vol. 39, Issue 2, Pages: 423-427(2017)
- 作者机构：
  
  1. 辽宁石油化工大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.02.030
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LI Chong, XIE YuJun. STRESS INTENSITY FACTOR FOR CRACKED FLAT-ELLIPTIC CROSS-SECTION PIPE. [J]. 39(2):423-427(2017)
DOI：

LI Chong, XIE YuJun. STRESS INTENSITY FACTOR FOR CRACKED FLAT-ELLIPTIC CROSS-SECTION PIPE. [J]. 39(2):423-427(2017) DOI： 10.16579/j.issn.1001.9669.2017.02.030.

摘要

作为评估管裂纹断裂韧性的重要参量,应力强度因子的确定尤为重要。为了更好地解决工程实际问题,大多数为三维裂纹问题,采用基于虚功原理和弯曲理论的裂纹张开能量释放率,即G*积分理论来求解带边界平椭圆截面管裂纹问题,得到拉伸载荷作用下平椭圆形截面管裂纹应力强度因子的G*积分表达式。给出的方法计算简单,能够得到封闭解。

Abstract

As an important parameter to assess the crack pipe fracture toughness,stress intensity factor determined is particularly important. In order to solve practical engineering problems,most of them are three-dimensional crack problems,crack mouth widening energy release rate based on the principle of virtual work and bending theory,i. e. G*integral theory is proposed to solve the problem of flat-elliptic cross section cracked pipe with boundary,and the stress intensity factors which are related to G*integral are given under tensile load for flat-elliptic cross-section tube crack. The results show application of this method is simple,and closed-form solution can be obtained.

关键词

断裂力学平椭圆形截面管G*积分应力强度因子

Keywords

Fracture mechanicsFlat-elliptic cross section pipeG*integralStress intensity factor

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