Numerical studies on crack growth in a steel tubular T-joint

被引：7
|
作者：
Olowokere, DO [1 ]
Nwosu, DI [1 ]
机构：
[1] MEM UNIV NEWFOUNDLAND,FAC ENGN & APPL SCI,ST JOHNS,NF A1B 3X5,CANADA
来源：
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES | 1997年 / 39卷 / 07期
关键词：
finite element analysis; line spring element; stress intensity factor; crack propagation; tubular T-joints; axial; in-plane and out-of-plane load cases;
D O I：
10.1016/S0020-7403(96)00087-2
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The results of a numerical investigation on fatigue crack growth of an offshore tubular T-joint under the action of axial, in-plane and out-of-plane bending loads are presented in this paper. Extensive stress analysis has been carried out to determine the location of the hot spot stress along the brace-chord intersection for each load case. Semi-elliptical cracks with varying crack lengths and crack depths were introduced at the hot spot location by means of line spring elements for stress intensity factor evaluation. The line springs were properly constrained to prevent the problem of crack surface penetration. The stress intensity factors obtained are then used in a crack growth law for life estimation. (C) 1997 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：859 / 871
页数：13
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