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A three-node triangular element with continuous nodal stress

文献类型：期刊论文

作者Yang, Yongtao1; Tang, Xuhai2; Zheng, Hong1
刊名COMPUTERS & STRUCTURES
出版日期2014
卷号141页码:46-58
关键词Partition of unity method Hybrid FE-Meshless method Trig3-CNS Continuous nodal stress Mesh distortion Convergence rate
ISSN号0045-7949
DOI10.1016/j.compstruc.2014.05.001
英文摘要A three-node triangular element with continuous nodal stress (Trig3-CNS) is presented. The present work is the development of the partition-of-unity based 'FE-Meshless' quadrilateral element with continuous nodal stress (Quad4-CNS). This triangular element, Trig3-CNS, is potential to replace Quad4-CNS when the geometry of computational domain is too complex to generate quadrilateral meshes. The three-node triangular element (Trig3) is widely used, however it is always of low accuracy due to its low order of trial functions. By increasing the order of trial functions, Trig3-CNS obtains better accuracy and higher convergence rate as compared to Trig3. The numerical tests in this paper demonstrate that Trig3-CNS has higher tolerance to mesh distortion as compared to the Trig3 and four-node quadrilateral element (Quad4). Another advantage is that the derivative of Trig3-CNS shape function is continuous at nodes, therefore Trig3-CNS is capable of giving smoother solution and calculating nodal stress without any extra smoothing operation. Published by Elsevier Ltd.
WOS研究方向Computer Science ; Engineering
语种英语
WOS记录号WOS:000339537300006
出版者PERGAMON-ELSEVIER SCIENCE LTD
源URL[http://119.78.100.198/handle/2S6PX9GI/3613]  
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.Princeton Univ, Dept Civil & Environm Engn
推荐引用方式
GB/T 7714		 Yang, Yongtao,Tang, Xuhai,Zheng, Hong. A three-node triangular element with continuous nodal stress[J]. COMPUTERS & STRUCTURES,2014,141:46-58.
APA Yang, Yongtao,Tang, Xuhai,&Zheng, Hong.(2014).A three-node triangular element with continuous nodal stress.COMPUTERS & STRUCTURES,141,46-58.
MLA Yang, Yongtao,et al."A three-node triangular element with continuous nodal stress".COMPUTERS & STRUCTURES 141(2014):46-58.

入库方式： OAI收割

来源：武汉岩土力学研究所

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