Model and mesh generation of cracked tubular Y-joints
Lie, Seng Tjhen
Lee, Chi King
Wong, S. M.
Date of Issue2002
School of Civil and Environmental Engineering
In this study, the methods for constructing accurate and consistent geometrical and finite element models for general cracked tubular Y-joints are described. Firstly, geometrical analysis of welded tubular joint is given and it is then extended to the modelling of general cracked Y-joints. The concept of crack surface and a simple mapping approach are suggested to model either through-thickness or surface cracks which can be of any length and located at any position along the brace-chord intersection. Secondly, the geometrical model developed will be used in the generation of consistent finite element meshes. The basic concepts used for the design and generation of 3D finite element meshes will be described. This will include the meshing procedures for discretization of tubular joints with through-thickness and surface cracks which are frequently regarded as one of the most difficult steps in the construction of tubular joint models. Finally, some mesh generation examples for uncracked and cracked Yjoints will be presented to demonstrate the use of the purposed geometrical model and mesh generation scheme developed.
DRNTU::Engineering::Civil engineering::Structures and design
Engineering fracture mechanics
© 2002 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Engineering Fracture Mechanics, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [Article DOI: http://dx.doi.org/10.1016/S0013-7944(02)00036-X].