Fatigue life analysis considering welding residual stress release

被引：0
|
作者：
Shen Y. [1 ,2 ]
Luo G.-E. [1 ]
Jiang X.-W. [2 ,3 ]
Li Y.-H. [1 ]
Zheng Y.-H. [1 ]
机构：
[1] School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang
[2] Jiangsu Automation Research Institute, Lianyungang
[3] School of Mechanical and Vehicle Engineering, Beijing Institute of Technology, Beijing
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2021年 / 25卷 / 07期
关键词：
Cone-column pressure shell; Crack growth rate; Fatigue life; Residual stress release;
D O I：
10.3969/j.issn.1007-7294.2021.07.011
中图分类号：
学科分类号：
摘要：
The welding residual stress has a significant effect on the fatigue life of a welded structure, and will be released under the cyclic loading process. Therefore, it is necessary to study the fatigue life prediction method of welded parts. Based on the fatigue crack growth rate model proposed and verified by the research group, combined with the calculated residual stress release formula of AH36 steel butt welded plate, a fatigue life calculation method considering of structural residual stress was proposed. Then, taking the submarine cone-column pressure-resistant shell as the research object, considering the influence of the welding sequence, the fatigue life analysis under the tensile load and the condition of semi-elliptical surface crack in the cone-cone position of the cone-column pressure shell was carried out and the predicted results were compared with the test results from the literature. It is shown that the fatigue life calculation formula of welded structures has a good predictive capability and can be used to evaluate the fatigue life of surface cracks in welded parts under tensile load. © 2021, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：935 / 945
页数：10
相关论文
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