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A Gradient Stable Node-Based Smoothed Finite Element Method for Solid Mechanics Problems
Joint Authors
Chen, Guangsong
Qian, Linfang
Ma, Jia
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-24, 24 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-04
Country of Publication
Egypt
No. of Pages
24
Main Subjects
Abstract EN
This paper presents a gradient stable node-based smoothed finite element method (GS-FEM) which resolves the temporal instability of the node-based smoothed finite element method (NS-FEM) while significantly improving its accuracy.
In the GS-FEM, the strain is expanded at the first order by Taylor expansion in a node-supported domain, and the strain gradient is then smoothed within each smoothing domain.
Therefore, the stiffness matrix includes stable terms derived by the gradient of the strain.
The GS-FEM model is softer than the FEM but stiffer than the NS-FEM and yields far more accurate results than the FEM-T3 or NS-FEM.
It even has comparative accuracy compared with those of the FEM-Q4.
The GS-FEM owns no spurious nonzero-energy modes and is thus temporally stable and well-suited for dynamic analyses.
Additionally, the GS-FEM is demonstrated on static, free, and forced vibration example analyses of solids.
American Psychological Association (APA)
Chen, Guangsong& Qian, Linfang& Ma, Jia. 2019. A Gradient Stable Node-Based Smoothed Finite Element Method for Solid Mechanics Problems. Shock and Vibration،Vol. 2019, no. 2019, pp.1-24.
https://search.emarefa.net/detail/BIM-1211631
Modern Language Association (MLA)
Chen, Guangsong…[et al.]. A Gradient Stable Node-Based Smoothed Finite Element Method for Solid Mechanics Problems. Shock and Vibration No. 2019 (2019), pp.1-24.
https://search.emarefa.net/detail/BIM-1211631
American Medical Association (AMA)
Chen, Guangsong& Qian, Linfang& Ma, Jia. A Gradient Stable Node-Based Smoothed Finite Element Method for Solid Mechanics Problems. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-24.
https://search.emarefa.net/detail/BIM-1211631
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211631