STUDY ON STRESS INTENSITY FACTOR OF THREE DIMENSION MODEL OF TYPEⅠCRACK IN TYPICAL LUG JOINT

WANG XinBo; WU LiMing; TAN ShengGang; ZHANG Sheng; WANG YaFan

doi:10.16579/j.issn.1001.9669.2018.01.029

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STUDY ON STRESS INTENSITY FACTOR OF THREE DIMENSION MODEL OF TYPEⅠCRACK IN TYPICAL LUG JOINT

更新时间：2022-09-22

- STUDY ON STRESS INTENSITY FACTOR OF THREE DIMENSION MODEL OF TYPEⅠCRACK IN TYPICAL LUG JOINT
- Journal of Mechanical Strength Vol. 40, Issue 1, Pages: 171-176(2018)
- 作者机构：
  
  1. 中航工业第一飞机设计研究院
  2. 空军工程大学航空航天工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.01.029
  CLC：
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WANG XinBo, WU LiMing, TAN ShengGang, et al. STUDY ON STRESS INTENSITY FACTOR OF THREE DIMENSION MODEL OF TYPEⅠCRACK IN TYPICAL LUG JOINT. [J]. 40(1):171-176(2018)
DOI：

WANG XinBo, WU LiMing, TAN ShengGang, et al. STUDY ON STRESS INTENSITY FACTOR OF THREE DIMENSION MODEL OF TYPEⅠCRACK IN TYPICAL LUG JOINT. [J]. 40(1):171-176(2018) DOI： 10.16579/j.issn.1001.9669.2018.01.029.

摘要

在二维有限元分析的基础上,得出了典型耳片接头的二维应力强度因子修正系数;进行了典型耳片接头的三维弹塑性接触有限元模型的仿真分析,引入了耳片厚度修正因子,并结合二维应力强度因子修正结果与三维有限元应力强度因子仿真结果对耳片厚度修正因子进行了拟合,得到了典型耳片接头的三维Ⅰ型裂纹应力强度因子表达式。最后,结合相应的剩余强度试验对应力强度因子表达式的准确性进行验证,结果表明,该应力强度因子计算公式准确性较高。

Abstract

On the basis of two-dimension finite element analysis,the two-dimension stress intensity factor correction coefficients of typical lug joint were obtained; Three dimension elastic plastic contact finite element model of the typical lug joint was simulated and analyzed,and the lug thickness correction factor was introduced. Based on the results of two-dimension stress intensity factor correction and three-dimension finite element stress intensity factor simulation,the plug thickness correction factors were fitted,then get the expression of stress intensity factor of three-dimension model ofⅠtype crack in typical lug joint.Finally the corresponding stress intensity factor expression was carried out to verify the accuracy,which combined with the corresponding residual strength test. The results show that the stress intensity factor calculation formula is accurate.

关键词

应力强度因子三维Ⅰ型裂纹耳片接头有限元分析

Keywords

Stress intensity factorThree-dimension model of typeⅠcrackLug jointFinite element analysis

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