Refined fatigue assessment of joints with welded in-plane attachments by LEFM

被引：11
|
作者：
Leander, John [1 ]
Aygul, Mustafa [2 ]
Norlin, Bert [1 ]
机构：
[1] KTH Royal Inst Technol, Div Struct Engn & Bridges, S-10044 Stockholm, Sweden
[2] Chalmers Univ Technol, Div Struct Engn, S-41296 Gothenburg, Sweden
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2013年 / 56卷
关键词：
Fatigue Gusset plates; Detail category; Stress intensity factor; XFEM;
D O I：
10.1016/j.ijfatigue.2013.07.013
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The fatigue life of joints with welded in-plane gusset plates is studied. The purpose is to suggest a descriptive detail category to be used in assessment of existing structures. Linear elastic fracture mechanics is used together with fictitious initial crack depths to predict the fatigue life. By calibrating the fictitious crack depths to real fatigue tests and simulating new test results, fatigue strengths dependent on the dimensions of the joint have been derived. The results show that a decreasing length and thickness of the gusset give decreasing stress intensity and higher fatigue strength. A numerical example is presented showing the merit of the proposed strengths in fatigue life. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：25 / 32
页数：8
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