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A four-node tetrahedral element with continuous nodal stress

文献类型：期刊论文

作者Sun, Guanhua1; Zheng, Hong2; Yang, Yongtao1
刊名COMPUTERS & STRUCTURES
出版日期2017
卷号191页码:180-192
关键词Partition of unity FE-Meshfree element Tetrahedral element Tetr4-CNS Mesh distortion
ISSN号0045-7949
DOI10.1016/j.compstruc.2017.07.001
英文摘要Formulation of a partition of unity (PU) based four-node tetrahedral element with continuous nodal stress (Tetr4-CNS) and its applications to the analysis of linear elasticity problems in three-dimension are presented in this paper. By simply using the same mesh as the classical tetrahedral element (Tetr4), Tetr4-CNS element is able to obtain continuous nodal stress without recourse to stress smoothing operation in the post-processing process, and to construct high order global approximation without adding extra nodes or nodal DOFs. Moreover, it is free from the linear dependence problem which cripples many of the PU-based methods, A series of numerical tests are carried out to evaluate the performance of the Tetr4-CNS element. The numerical results show that accuracy through the proposed element is superior to that through Tetr4 element and eight-node hexahedral element (Hexa8). More importantly, the proposed element has excellent mesh distortion tolerant capabilities. (C) 2017 Elsevier Ltd. All rights reserved.
WOS研究方向Computer Science ; Engineering
语种英语
WOS记录号WOS:000407535200014
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/4155]  
专题岩土力学所知识全产出_期刊论文
国家重点实验室知识产出_期刊论文
作者单位1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ;
2.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ
推荐引用方式
GB/T 7714		 Sun, Guanhua,Zheng, Hong,Yang, Yongtao. A four-node tetrahedral element with continuous nodal stress[J]. COMPUTERS & STRUCTURES,2017,191:180-192.
APA Sun, Guanhua,Zheng, Hong,&Yang, Yongtao.(2017).A four-node tetrahedral element with continuous nodal stress.COMPUTERS & STRUCTURES,191,180-192.
MLA Sun, Guanhua,et al."A four-node tetrahedral element with continuous nodal stress".COMPUTERS & STRUCTURES 191(2017):180-192.

入库方式： OAI收割

来源：武汉岩土力学研究所

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