Journal
COMPUTERS & STRUCTURES
Volume 110, Issue -, Pages 93-106Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2012.07.004
Keywords
Shell structures; Finite elements; Hellinger-Reissner principle; MITC method
Funding
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant [20114030200040]
- Korea government Ministry of Knowledge Economy
- Korea Evaluation Institute of Industrial Technology (KEIT) [20114030200040] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The objective of this study is to improve the performance of the MITC3 shell finite element. The Hellinger-Reissner (HR) variational principle is modified in the framework of the MITC method, and a special approximated transverse shear strain field is proposed. The MITC3-HR shell finite element improved by using the Hellinger-Reissner functional passes all the basic tests (zero energy mode test, patch test, and isotropic element test). Convergence studies considering a fully clamped plate problem, a sixty-degree skew plate problem, cylindrical shell problems, and hyperboloid shell problems demonstrate the improved predictive capability of the new 3-node shell finite element. (c) 2012 Elsevier Ltd. All rights reserved.
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