MESH GENERATION FOR NONLINEAR FINITE ELEMENT ANALYSIS
Robert
RAINSBERGER XYZ Scientific Applications, Inc.,
Thursday, December 4, 2003 13:3014:30, Room 145, NIST North (820) Gaithersburg Thursday, December 4, 2003 11:3012:30, Room 5000 Boulder
Abstract:
The first part of this expository talk is an introduction on
some of the elementary and advanced techniques of mesh generation for
finite element analysis. The second part describes a technique to form
nearly orthogonal meshes based on the solution to various systems of
elliptic partial differential equations in fluid dynamics,
hydrodynamics, heat transfer, solid and structural mechanics in order to
minimize lower order error terms. Methods have been developed to solve
these equations on surfaces that are not smooth or have discontinuities.
Such surfaces are typical of the socalled multiplesurface IGES
geometry where only one surface is desired for mesh generation. This
requires the use of the projection method so that multiple surfaces can
be grouped together as one surface. It is at the edges where the
surfaces (almost) meet that the nonsmooth or discontinuous features are
found.
Speaker Bio:
Dr. Rainsberger, B.S. (Mathematics, U. of
IllinoisUrbana, 1979) and Ph.D. (Mathematics, U. of
CaliforniaBerkeley, 1988), is the founding President (1991 present) of
XYZ Scientific Applications, Inc., the developer of a
finiteelementanalysis preprocessor named TrueGrid. Prior to 1991, he
worked at Lawrence Livermore National Laboratory and was a consultant to
IBM and Control Data in meshgenerationrelated code development. He is
currently a consultant to NIST Mathematical and Computational Sciences
Division on developing finite element analysis codes for applications in
the NIST World Trade Center (WTC) investigation project.
Contact: J. T. FongNote: Visitors from outside NIST must contact
Robin Bickel; (301) 9753668;
at least 24 hours in advance.
