Polyhedral smoothed finite element method for thermoelastic analysis

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Thermoelastic analysis by means of three-dimensional polyhedral elements based on the Smoothed Finite elements method (S-FEM), for example nodal Cell-based S-FEM (CS-FEM), Node-based S-FEM (NS-FEM), and Edge-based S-FEM (ES-FEM), was studied. S-FEM allows implicit shape functions, making it possible to construct shape functions of S-FEM based polyhedral elements in a straightforward manner. The performance of S-FEM based polyhedral elements was compared with one another and with the conventional finite elements including hexahedral and tetrahedral element. Numerical examples show that the polyhedral elements by means of CS-FEM and ES-FEM provide better accuracy and convergence rate than conventional hexahedral finite elements, while the polyhedral elements by means of NS-FEM leads to spurious mode.
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Issue Date
2017-12
Language
English
Article Type
Article
Keywords

SOLID MECHANICS PROBLEMS; VARIABLE-NODE ELEMENTS; ELASTIC-PLASTIC ANALYSIS; HEAT-TRANSFER ANALYSIS; METHOD NS-PIM; METHOD FS-FEM; POLYGONAL MESHES; INTEGRATION; 3D; FORMULATION

Citation

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.31, no.12, pp.5937 - 5949

ISSN
1738-494X
DOI
10.1007/s12206-017-1138-5
URI
http://hdl.handle.net/10203/238806
Appears in Collection
ME-Journal Papers(저널논문)
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