NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Analysis and control of hourglass instabilities in underintegrated linear and nonlinear elasticityMethods are described to identify and correct a bad finite element approximation of the governing operator obtained when under-integration is used in numerical code for several model problems: the Poisson problem, the linear elasticity problem, and for problems in the nonlinear theory of elasticity. For each of these problems, the reason for the occurrence of instabilities is given, a way to control or eliminate them is presented, and theorems of existence, uniqueness, and convergence for the given methods are established. Finally, numerical results are included which illustrate the theory.
Document ID
19940023763
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Jacquotte, Olivier P. (Texas Univ. Austin, TX, United States)
Oden, J. Tinsley (Texas Univ. Austin, TX, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1994
Subject Category
Structural Mechanics
Report/Patent Number
E-8659
TICOM-85-10
NASA-CR-195293
NAS 1.26:195293
Accession Number
94N28266
Funding Number(s)
CONTRACT_GRANT: NAG3-329
PROJECT: RTOP 509-10-11
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available