Polyhedral smoothed finite element method for thermoelastic analysis

被引：10

作者：

Kim, Hobeom ^{[1
]}

Im, Seyoung ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, 291 Daehak Ro, Daejeon 34141, South Korea

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2017年 / 31卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

Cell-based smoothed Finite element method (CS-FEM); Edge-based smoothed Finite element method (ES-FEM); Node-based smoothed Finite element method (NS-FEM); Polyhedral element; Smoothed Finite element method (S-FEM); Thermoelastic analysis; VARIABLE-NODE ELEMENTS; HEAT-TRANSFER ANALYSIS; METHOD NS-PIM; POLYGONAL MESHES; FEM; INTEGRATION; FORMULATION; SCHEME;

D O I：

10.1007/s12206-017-1138-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页码：5937 / 5949

页数：13

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