An improved J-integral based adhesive joint fatigue life estimation method for automotive structural durability analysis

被引：1

作者：

Yue, Zhongjie ^{[1
,2
,3
]}

Chen, Qiuren ^{[1
,2
,5
]}

Huang, Li ^{[1
,2
]}

Wei, Chendi ^{[1
,2
,3
]}

Chen, Li ^{[2
]}

Wang, Xianhui ^{[4
]}

Han, Weijian ^{[2
]}

机构：

[1] Nanjing Tech Univ, Key Lab Light weight Mat, Nanjing, Peoples R China

[2] Mat Acad, Jitri, Suzhou, Peoples R China

[3] Xian Jiaotong Liverpool Univ XJTLU, Sch Adv Technol, Suzhou, Peoples R China

[4] Nanjing Univ Sci & Technol, Sch Mech Engn, Nanjing, Peoples R China

[5] Nanjing Tech Univ, Key Lab Light weight Mat, 286 Qinglonggang Rd, Suzhou 215100, Peoples R China

来源：

JOURNAL OF ADHESION | 2024年 / 100卷 / 13期

关键词：

Adhesive joint; fatigue life prediction; J-integral; mixed mode ratio; BONDED JOINTS; PERFORMANCE; FAILURE; PREDICTION;

D O I：

10.1080/00218464.2024.2308847

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To estimate the fatigue life of lightweight automotive structures in compliance with top-down design principles, there is a need for an accurate adhesive joint fatigue life prediction method that is compatible with industrial finite element modeling practices. This paper proposes a method to split the analytical J-integral solution based on the fracture mode of joints. The split mode I and II J-integrals correspond to the opening mode and sliding mode of the bonded joint, respectively. By splitting the J-integral and introducing the concept of the mixed mode ratio, an improved approach for estimating adhesive joint fatigue life is presented, considering the influence of loading modes. The proposed fatigue life prediction method is validated through fatigue tests on a sub-component level bonded structure. The results of the validation demonstrate that the split J-integral analytical solution method, considering the mixed mode ratio, provides better predictions compared to its predecessor approach.

引用

页码：1270 / 1293

页数：24

共 34 条

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