Abstract: Due to the complex geometrical of tubular T-joints and the loading condition in offshore tubular structures, fatigue damage is the most common failure mode in offshore tubular structures. The fatigue cracks usually occur at the brace to chord intersection. And fraction mechanism methods is the most common method to estimate the fatigue life of tubular T-joints. Thus, this paper focuses on the stress intensity factors of cracked Circular Hollow Sections (CHSs) tubular T-joints. FEM is produced to calculate the stress intensity factors along the crack front. Based on the FEM of tubular T-joint, the stress intensity factors of a cracked CHS T-joint subjected to brace end axial loads are calculated. The FEM are analysed on ABAQUS software and compared with existing experimental results. It is found that the SIF computed from the FEM is agreed with the experimental results of T-joints. After that, a parametric study is conducted on the geometrical parameter of the tubular T-joints.
Keyword: Fatigue; Cracks; ABAQUS; T-joints; SIF.
Title: FEM on the SIFs of Cracked Tubular T-Joints
Author: Hazem Samih Mohamed
International Journal of Engineering Research and Reviews
ISSN 2348-697X (Online)
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