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Hybrid‐stress solid elements for shell structures based upon a modified variational functional
Author(s) -
Sze K. Y.,
Lo S. H.,
Yao L.Q.
Publication year - 2002
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.402
Subject(s) - shell (structure) , benchmark (surveying) , displacement (psychology) , node (physics) , stiffness , structural engineering , stress (linguistics) , matrix (chemical analysis) , stiffness matrix , set (abstract data type) , materials science , mathematics , algorithm , composite material , engineering , computer science , psychology , linguistics , philosophy , geodesy , psychotherapist , programming language , geography
In this paper, we start with a modified generalized laminate stiffness matrix that serves as a remedy to resolve the thickness locking and some abnormalities encountered by solid‐shell elements in laminate analyses. A modified Hellinger–Reissner functional having displacement and a set of generalized stresses as independent fields is devised. Based upon the functional, eight‐node and 18‐node hybrid‐stress solid‐shell elements are proposed. A number of benchmark tests on homogenous and laminated plates/shells are conducted. The accuracy of the elements is promising. Copyright © 2002 John Wiley & Sons, Ltd.