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|Title:||A new automatic adaptive 3D solid mesh generation scheme for thin-walled structures||Authors:||Lee, Chi King
Xu, Q. X.
|Keywords:||DRNTU::Engineering::Civil engineering::Structures and design||Issue Date:||2004||Source:||Lee, C. K., & Xu, Q. X. (2005). A new automatic adaptive 3D solid mesh generation scheme for thin-walled structures. International Journal for Numerical Methods in Engineering, 62(11), 1519-1558.||Series/Report no.:||International journal for numerical methods in engineering||Abstract:||A new algorithm to generate 3-dimentional (3D) mesh for thin-walled structures is proposed. In the proposed algorithm, the mesh generation procedure is divided into two distinct phases. In the first phase, a surface mesh generator is employed to generate a surface mesh for the mid-surface of the thin-walled structure. The surface mesh generator used will control the element size properties of the final mesh along the surface direction. In the second phase, specially designed algorithms are used to convert the surface mesh to a 3D solid mesh by extrusion in the surface normal direction of the surface. The extrusion procedure will control the refinement levels of the final mesh along the surface normal direction. If the input surface mesh is a pure quadrilateral mesh and refinement level in the surface normal direction is uniform along the whole surface, all hex-meshes will be produced. Otherwise, the final 3D meshes generated will eventually consist of four types of solid elements, namely, tetrahedron, prism, pyramid and hexahedron. The presented algorithm is highly flexible in the sense that, in the first phase, any existing surface mesh generator can be employed while in the second phase, the extrusion procedure can accept either a triangular or a quadrilateral or even a mixed mesh as input and there is virtually no constraint on the grading of the input mesh. In addition, the extrusion procedure development is able to handle structural joints formed by the intersections of different surfaces. Numerical experiments indicate that the present algorithm is applicable to most practical situations and well shaped elements are generated.||URI:||https://hdl.handle.net/10356/103292
|DOI:||http://dx.doi.org/10.1002/nme.1239||Rights:||© 2004 John Wiley & Sons. This is the author created version of a work that has been peer reviewed and accepted for publication by International Journal for Numerical Methods in Engineering,John Wiley & Sons. 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/10.1002/nme.1239].||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||CEE Journal Articles|
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