Numerical modelling of square tubular T-joints with surface crack at corner

• Published in: Fourth International Conference on Advances in Steel Structures pp. 1159 - 1164
• Main Authors: Chiew, S.P., Lee, C.K., Lie, S.T., Ji, H.L.
• Format: Book Chapter
• Language: English
• Published: Elsevier Ltd 2005
• ISBN: 9780080446370; 008044637X
• DOI: 10.1016/B978-008044637-0/50171-2

The chapter discusses the numerical modeling of square tubular T-joints with a surface crack at corner. Fracture mechanics method is proven a reliable approach for the assessment of a component with crack-like defect. Central to the fracture mechanics method is the stress intensity factor (SIF) that gives the magnitude of the elastic stress field at the crack tip of an existing crack. The SIF is a function of the applied stress field, crack length, and geometry, and it is used in conjunction with a crack growth law, such as the Paris equation. To get the accurate SIF for cracked tubular joints, one accurate model that can properly simulate the tubular joints with cracks is needed. Large number of researchers are involved in the modeling of tubular joints with cracks.