Accession Number : ADA116172

Title :   A Right-Inverse for the Divergence Operator in Spaces of Piecewise Polynomials. Application to the p-Version of the Finite Element Method.

Descriptive Note : Technical summary rept.,


Personal Author(s) : Vogelius,Michael

PDF Url : ADA116172

Report Date : May 1982

Pagination or Media Count : 35

Abstract : In the first part of this paper we study in detail the properties of the divergence operator acting on continuous piecewise polynomials; more specifically, we characterize the range and prove the existence of a maximal right-inverse whose norm grows at most algebraically with the degree of the piecewise polynomials. In the last part of this paper we apply these results to the p-version of the Finite Element Method for a nearly incompressible material with homogeneous Dirichlet boundary conditions. We show that the p-version maintains optimal convergence rates in the limit as the Poisson ratio approaches 1/2. This fact eliminates the need for any reduced integration such as customarily used in connection with the more standard h-version of the Finite Element Method. (Author)

Descriptors :   *Polynomials, *Finite element analysis, Inversion, Rates, Boundary value problems, Dirichlet integral, Incompressibility, Materials, Integration

Subject Categories : Numerical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE