SIAM Journal on Numerical Analysis
Finite Element Method for Elliptic Problems
Finite Element Method for Elliptic Problems
An anisotropic pressure-stabilized finite element method for incompressible flow problems
Computers & Mathematics with Applications
An anisotropic, superconvergent nonconforming plate finite element
Journal of Computational and Applied Mathematics
Anisotropic conforming rectangular elements for elliptic problems of any order
Applied Numerical Mathematics
Journal of Computational and Applied Mathematics
Hi-index | 0.00 |
The classical finite element approximation theory relies on the regular or nondegenerate condition, i.e. hK/ρK ≤ c, for all element K, where hk and ρK are diameter of K and diameter of the biggest ball contained in K, respectively. But this condition is not only unnecessary for some finite elements, but also difficult to satisfy in some problems. In this paper a simple criteria condition for getting error estimate of interpolation without the above regular condition is presented. It is used to two well-known nonconforming elements--Wilson's and Adini's elements. The error estimates not only for the interpolation error, but also for the consistency or compatibility error of these two elements are obtained without the above regular condition. Some numerical results are given.