Polyhedral elements by means of node/edge-based smoothed finite element method

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The node-based or edge-based smoothed finite element method is extended to develop polyhedral elements that are allowed to have an arbitrary number of nodes or faces, and so retain a good geometric adaptability. The strain smoothing technique and implicit shape functions based on the linear point interpolation make the element formulation simple and straightforward. The resulting polyhedral elements are free from the excessive zero-energy modes and yield a robust solution very much insensitive to mesh distortion. Several numerical examples within the framework of linear elasticity demonstrate the accuracy and convergence behavior. The smoothed finite element method-based polyhedral elements in general yield solutions of better accuracy and faster convergence rate than those of the conventional finite element methods. Copyright (c) 2016 John Wiley & Sons, Ltd.
Publisher
WILEY-BLACKWELL
Issue Date
2017-06
Language
English
Article Type
Article
Keywords

SOLID MECHANICS PROBLEMS; METHOD NS-FEM; INTEGRATION; MESHES; FORMULATION; ELASTICITY; FRACTURE; SCHEME; MODEL; AID

Citation

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, v.110, no.11, pp.1069 - 1100

ISSN
0029-5981
DOI
10.1002/nme.5449
URI
http://hdl.handle.net/10203/224055
Appears in Collection
ME-Journal Papers(저널논문)
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