FATIGUE STRENGTH ASSESSMENT OF SHIP STRUCTURES BASED ON THE CRACK PROPAGATION THEORY

被引：0
|
作者：
Niu Song [1 ]
Feng Guoqing [1 ]
Ren Huilong [1 ]
Zhang Jian [1 ]
机构：
[1] Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
OMAE 2009, VOL 2: STRUCTURES, SAFETY AND RELIABILITY | 2009年
关键词：
D O I：
暂无
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
Fatigue damage is one of the main failure modes of ship structures. At present, the fatigue assessment of ship structures is mainly based on S-N method, such as the simplified procedures by classification societies or the spectral fatigue analysis method, etc. Because the initial flaw or crack can not be taken into account in S-N method, the fatigue assessment of ship structures based on fracture mechanics or crack propagation theory is worth to be studied. In this paper, the crack propagation theory based fatigue assessment of ship structures is studied. First, the calculation of stress intensity factor based on finite element analysis and weight function method arc given, then Paris model is used to predict the crack propagation life. Finally, a numerical example is given to show the procedure of fatigue assessment of ship structures.
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页码：499 / +
页数：3
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