AN ANALYICAL METHOD ON STRESS INTENSITY FACTOR FOR CRACKED D-SHAPE CROSS-SECTION PIPE

YUAN Hao; XIE YuJun

doi:10.16579/j.issn.1001.9669.2018.06.033

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AN ANALYICAL METHOD ON STRESS INTENSITY FACTOR FOR CRACKED D-SHAPE CROSS-SECTION PIPE

更新时间：2022-09-22

- AN ANALYICAL METHOD ON STRESS INTENSITY FACTOR FOR CRACKED D-SHAPE CROSS-SECTION PIPE
- Journal of Mechanical Strength Vol. 40, Issue 6, Pages: 1473-1478(2018)
- 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.1001.9669.2018.06.033
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YUAN Hao, XIE YuJun. AN ANALYICAL METHOD ON STRESS INTENSITY FACTOR FOR CRACKED D-SHAPE CROSS-SECTION PIPE. [J]. 40(6):1473-1478(2018)
DOI：

YUAN Hao, XIE YuJun. AN ANALYICAL METHOD ON STRESS INTENSITY FACTOR FOR CRACKED D-SHAPE CROSS-SECTION PIPE. [J]. 40(6):1473-1478(2018) DOI： 10.16579/j.issn.1001.9669.2018.06.033.

摘要

应力强度因子的确定是断裂力学在实际工程应用的首要任务。分别根据虚功原理和材料力学弯曲理论的裂纹面非自发扩展能量释放率,即J,2,积分理论求解D型截面管的在拉伸和弯曲载荷作用下的裂纹应力强度因子表达式。给出的方法能得到封闭解,且计算简单。并将结果与有限元解进行分析比较,进一步指出了计算方法的有效性。

Abstract

The nuclear task in fracture mechanics is to determine the stress intensity factor. According to the crack mouth widening energy release rate based on the principle of virtual work and bending theory,respectively, i.e. J,2, integral theory is proposed to solve the stress intensity factor expression of D-shape cross section cracked pipe under tension and bending loads. The results show application of this method not only can give closed-form solution, but also extremely simple.Comparing the proposed method with the finite element method to show the feasibility of the proposed method.

关键词

断裂力学应力强度因子D型截面管裂纹有限元

Keywords

Fracture mechanicsStress intensity factorD-shape cross section cracked pipeCrackFinite element method

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