Fatigue Reliability Assessment of Correlated Welded Web-frame Joints

被引：0
|
作者：
W.Huang [1 ]
Y.Garbatov [1 ]
C.Guedes Soares [2 ]
机构：
[1] Centre for Marine Technology and Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
[2] Centre for Marine Technology and Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portuga
来源：
Journal of Marine Science and Application | 2014年 / 13卷 / 01期
关键词：
fatigue reliability; hotspot stress; S-N approach; finite element analysis; web-frame joints;
D O I：
暂无
中图分类号：
TG405 [疲劳强度问题];
学科分类号：
080201 ; 080503 ;
摘要：
The objective of this work is to analyze the fatigue reliability of complex welded structures composed of multiple web-frame joints, accounting for correlation effects. A three-dimensional finite element model using the 20-node solid elements is generated. A linear elastic finite element analysis was performed, hotspot stresses in a web-frame joint were analyzed and fatigue damage was quantified employing the S-N approach. The statistical descriptors of the fatigue life of a non-correlated web-frame joint containing several critical hotspots were estimated. The fatigue reliability of a web-frame joint wasmodeled as a series system of correlated components using the Ditlevsen bounds. The fatigue reliability of the entire welded structure with multiple web-frame joints, modeled as a parallel system of non-correlated web-frame joints was also calculated.
引用
收藏
页码：23 / 31
页数：9
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