A beam finite element for through-cracked tubular node behaviour modelling

• Published in: Communications in numerical methods in engineering Vol. 18; no. 8; pp. 555 - 564
• Main Authors: Rouhan, A., Wielgosz, C.
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.08.2002; Wiley
• Subjects: Applied sciences; Buildings. Public works; Computation methods. Tables. Charts; Computational techniques; Engineering Sciences; Exact sciences and technology; Finite-element and galerkin methods; Fracture mechanics (crack, fatigue, damage...); Fracture mechanics, fatigue and cracks; Fundamental areas of phenomenology (including applications); hybrid finite element; Materials; Mathematical methods in physics; Mechanics; offshore structures; Physics; Solid mechanics; Structural analysis. Stresses; Structural and continuum mechanics; through-crack; tubular assembly; Finite element method; Tubular joint; Hybrid model; Numerical method; System identification; Offshore structure; Modeling; Crack; Cracked beam
• ISSN: 1069-8299; 1099-0887
• DOI: 10.1002/cnm.512

This paper deals with the problem of a through‐cracked tubular joint behaviour modelling. A new beam finite element has been created, in order to take into account the loss of stiffness of the joint due to through‐thickness crack presence, and the coupling between axial force and bending momentum. This allows to study at a low computing time large damaged offshore structures, using beam elements. The mechanical model used to build the finite element is first described. An analytical identification of its internal parameters (eccentricity and stiffness) is then performed. Finally, some results are presented. Copyright © 2002 John Wiley & Sons, Ltd.