Evaluation of different strain-based damage criteria for predicting the fatigue life of friction stir spot-welded joints under multi-axial loading conditions

被引：0
|
作者：
Aghabeigi, Mahya [1 ]
Hassanifard, Soran [1 ,2 ]
Hashemi, Seyed M. [2 ]
机构：
[1] Univ Tabriz, Fac Mech Engn, Tabriz, Iran
[2] Ryerson Univ, Dept Aerosp Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2020年 / 234卷 / 01期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Friction stir spot welding; Cross-Tension and Lap-Shear specimens; finite element analysis; fatigue crack initiation life; strain-based approach; CRITICAL PLANE APPROACH; MECHANICAL-PROPERTIES; CRACK INITIATION; BEHAVIOR; ALUMINUM; STEEL; PARAMETERS; STRENGTH; MILD;
D O I：
10.1177/1464420719881480
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this article, fatigue life of dissimilar friction stir spot welds in Cross-Tension and Lap-Shear specimens is predicted using a number of fatigue damage criteria. The results revealed a relatively good correlation between predicted fatigue crack initiation lives and experimental data. Also, it has been shown that in the whole range of applied load levels, the least discrepancy between predicted fatigue lives and experimental data is related to the Smith-Watson-Topper criterion. Finally, an excellent agreement was found in predicting the location of the crack tips using the Fatemi-Socie criterion in both types of specimens.
引用
收藏
页码：156 / 166
页数：11
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