W. Zhang et Dp. Chen, THE PATCH TEST CONDITIONS AND SOME MULTIVARIABLE FINITE-ELEMENT FORMULATIONS, International journal for numerical methods in engineering, 40(16), 1997, pp. 3015-3032
From a unified viewpoint, this article establishes the practical and g
eneral constant stress patch test conditions (PTC) for analysing and e
nsuring convergence or robustness of some multivariable finite element
(MFE) formulations, such as hybrid-mixed and incompatible element for
mulations. The proposed PTC are applied to develop new general MFE for
mulations which pass PTC and a family of corresponding MFE for stress
analysis. Several numerical examples are also given. (C) 1997 by John
Wiley & Sons, Ltd.