Stress concentration factor and hot spot stress studies of partially overlapped circular hollow section K-joints
Author
Thong, Sopha.
Date of Issue
2010School
School of Civil and Environmental Engineering
Abstract
Circular hollow sections (CHS) are widely adopted in fixed jacket and topside
structures due to their excellent structural and mechanical properties. Virtually in
almost all off-shore structures, one of the main design considerations when using CHS
is to optimize the structural joints which are susceptible to fatigue failure due the
dynamic and cyclic loading natural of the structures. Recently, partially overlapped
CHS tubular K-joints become more and more popular due to their optimum strengths
when compared to other alternative joint configurations such as non-overlapped
(gapped) or completely overlapped K-joints. However, in the past, few research works
were carried out to study the fatigue behaviour of partially overlapped CHS K-joints. In fact, currently, only a very limited information regarding the fatigue life of CHS overlapped K-joints are available. Hence, there is a need to investigate the stress concentration factors (SCF) and the hot spot stress (HSS) distributions of this kind of
joints in the current research.
Subject
DRNTU::Engineering::Civil engineering
Type
Thesis
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