Accession Number : ADA141117

Title :   Conforming Finite Element Methods for Incompressible and Nearly Incompressible Continua.

Descriptive Note : Technical note,

Corporate Author : MARYLAND UNIV COLLEGE PARK INST FOR PHYSICAL SCIENCE AND TECHNOLOGY

Personal Author(s) : Scott,L R ; Vogelius,M

PDF Url : ADA141117

Report Date : Mar 1984

Pagination or Media Count : 44

Abstract : Interest here is in finite element discretizations of problems involving an incompressibility condition. As model problems we consider the Stokes equations for the flow of a viscous, incompressible fluid and the equations of linear plane-strain elasticity for the deformation of an isotropic, nearly incompressible solid. In both cases the incompressibility condition takes the form of a divergence constraint. Although this is the most simple formulation, the proper understanding of how an approximate method satisfies the constraint represents an important step towards the understanding of more complicated situations, involving e.g. the Navier-Stokes equations or the equations of nonlinear elasticity. The finite element methods we study have the property that the approximations to the velocities, respectively to the displacements, are continuous; such methods are generally referred to as conforming.

Descriptors :   *Finite element analysis, Incompressible flow, Solids, Viscous flow, Navier Stokes equations, Elastic properties, Plastic deformation, Equations of motion

Subject Categories : Numerical Mathematics
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE