ACCURACY ANALYSIS ON THE EMPIRICAL EQUATION OF FINITE THICKNESS SEMI-ELLIPTICAL SURFACE CRACK BASED ON INTERACTION INTEGRAL METHOD

HOU Shuai; ZHU YouLi; QIU Ji; SUN XiaoFeng

doi:10.16579/j.issn.1001.9669.2018.06.034

您当前的位置：

首页 >

文章列表页 >

ACCURACY ANALYSIS ON THE EMPIRICAL EQUATION OF FINITE THICKNESS SEMI-ELLIPTICAL SURFACE CRACK BASED ON INTERACTION INTEGRAL METHOD

更新时间：2022-09-22

- ACCURACY ANALYSIS ON THE EMPIRICAL EQUATION OF FINITE THICKNESS SEMI-ELLIPTICAL SURFACE CRACK BASED ON INTERACTION INTEGRAL METHOD
- Journal of Mechanical Strength Vol. 40, Issue 6, Pages: 1479-1484(2018)
- 作者机构：
  
  1. 装甲兵工程学院装备维修与再制造工程系
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.06.034
  CLC：
扫描看全文
HOU Shuai, ZHU YouLi, QIU Ji, et al. ACCURACY ANALYSIS ON THE EMPIRICAL EQUATION OF FINITE THICKNESS SEMI-ELLIPTICAL SURFACE CRACK BASED ON INTERACTION INTEGRAL METHOD. [J]. 40(6):1479-1484(2018)
DOI：

HOU Shuai, ZHU YouLi, QIU Ji, et al. ACCURACY ANALYSIS ON THE EMPIRICAL EQUATION OF FINITE THICKNESS SEMI-ELLIPTICAL SURFACE CRACK BASED ON INTERACTION INTEGRAL METHOD. [J]. 40(6):1479-1484(2018) DOI： 10.16579/j.issn.1001.9669.2018.06.034.

摘要

采用相互作用积分法计算了有限厚度半椭圆表面裂纹基准问题的应力强度因子沿裂纹的分布,并与经验公式和等效域积分法计算的应力强度因子做了对比。首先通过与等效域积分结果的比较,验证了相互作用积分在该问题上的计算精度。之后,采用相互作用积分法和经验公式计算了不同裂纹形状比,不同有限厚度比条件下的应力强度因子沿裂纹的分布,比较了经验公式产生的相对误差。结果表明在有限厚度比较大时,经验公式计算结果的误差较大。通过分析,给出了经验公式的适用范围。

Abstract

The interaction integral method（IIM） is used to calculate stress intensity factors（SIF） of finite thickness semi-elliptical surface cracks. Results are compared with that predicted by the empirical equation and equivalent domain integral（EDI） method. The comparison with EDI method verifies computational accuracy of IIM for calculating 3 D crack problem. The SIF distribution along the semi-elliptical crack of different crack shape ratio and different finite thickness ratio conditions are calculated with the IIM and empirical equation. Relative error of empirical equation is evaluated. The results show that empirical equation produces larger error when the finite thickness ratio is large. Based on the analysis, the applicable range of the empirical equation is presented.

关键词

半椭圆裂纹有限厚度应力强度因子相互作用积分法等效域积分经验公式

Keywords

Semi-elliptical crackFinite thicknessStress intensity factors（SIF）Interaction integral method（IIM）Equivalent domain integral（EDI）Empirical equation

references

Views

239

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

⁰