Translational surface coupling along a line with non-conforming meshes
File(s)C&S21 - ANN_BAI.pdf (4.21 MB)
Accepted version
Author(s)
Nordas, Alexandros N
Izzuddin, Bassam A
Type
Journal Article
Abstract
In the modelling of large-scale metal structures, comprising plated components intersecting along weld lines, the meshing efficiency and flexibility are limited by the requirements of nodal alignment and compliance of element size, shape and edge orientation throughout the domain. Such limitations necessitate the use of complex transitional meshes in intersection regions and result in highly complex global mesh configurations. This paper presents an original and systematic methodology for surface coupling along an arbitrary 1D interface, which is applicable to any type of 2D and 3D FEs, and which provides a systematic framework for: (i) geometric modelling of weld lines; (ii) coupling of regions with different levels of discretisation detail or element types within a system; and (iii) domain partitioning problems involving computationally heterogeneous partitions. The strategy is based upon a novel coupling element formulation, which uses the fundamental principles of the mortar method and an augmented Lagrangian Multiplier optimisation approach. Particular consideration is given to an element formulation that enforces rigid translational coupling, which has been implemented for employment with co-rotational Reissner-Mindlin shell elements. Various numerical examples are presented to demonstrate the accuracy, versatility and substantial computational benefits of the developed methodology for modelling large-scale metal structural systems.
Date Issued
2022-02
Date Acceptance
2021-10-20
Citation
Computers & Structures, 2022, 260, pp.1-27
ISSN
0045-7949
Publisher
Elsevier BV
Start Page
1
End Page
27
Journal / Book Title
Computers & Structures
Volume
260
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
https://www.sciencedirect.com/science/article/pii/S004579492100225X?via%3Dihub
Subjects
09 Engineering
Applied Mathematics
Publication Status
Published
Article Number
106703
Date Publish Online
2021-12-17