A method for the evaluation of the fatigue operational life of submarine pressure hulls

被引：12
|
作者：
Robles, LBR
Buelta, MA
Gonçalves, E
Souza, GFM
机构：
[1] Univ Sao Paulo, Polytech Sch, Dept Naval Architecture & Ocean Engn, BR-05508900 Sao Paulo, Brazil
[2] Univ Sao Paulo, Polytech Sch, Dept Civil Engn, BR-05508900 Sao Paulo, Brazil
[3] Univ Sao Paulo, Polytech Sch, Dept Mech Engn, BR-05508900 Sao Paulo, Brazil
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2000年 / 22卷 / 01期
关键词：
fatigue; fracture; residual stress; submarine; weldments;
D O I：
10.1016/S0142-1123(99)00102-4
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this paper, a method is developed to calculate the fatigue lifetime of submarine pressure hulls, applying linear elastic fracture mechanics, based on the Paris equation. It is known that this structure is submitted to high stresses caused by variable hydrostatic pressure and residual stresses due to the welding process. The association of those variables may cause, after a certain period of time, material fatigue and fracture. Through the application of Paris' law, and based on an initial crack size, the crack size after a given number of load cycles, defined by the number of submarine dives, is obtained, furnishing information for possible pressure hull maintenance action, regarding crack repairs, (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：41 / 52
页数：12
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