Premium
Improved formulations of Q cs6 hybrid element for enhancing computational efficiency
Author(s) -
Sze K. Y.,
Chow C. L.,
Chen Wanji
Publication year - 1991
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.1620310512
Subject(s) - quadrilateral , orthogonality , element (criminal law) , mathematics , finite element method , smoothing , mathematical optimization , mathematical analysis , structural engineering , engineering , geometry , statistics , political science , law
This article discusses two alternative methods of formulating the recently proposed quadrilateral plane element Q cs6 , which is based on a generalized functional with multiple stress fields. The first method is derived by an extended Hu‐Washizu Principle with the presence of incompatible modes and enforcement of energy orthogonality, while the second one is established on a non‐conventional discrete local stress smoothing. Both methods can be applied to other structural element formulations with enhanced efficiency.