NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
A hybrid-stress finite element approach for stress and vibration analysis in linear anisotropic elasticityA hybrid stress finite element method is developed for accurate stress and vibration analysis of problems in linear anisotropic elasticity. A modified form of the Hellinger-Reissner principle is formulated for dynamic analysis and an algorithm for the determination of the anisotropic elastic and compliance constants from experimental data is developed. These schemes were implemented in a finite element program for static and dynamic analysis of linear anisotropic two dimensional elasticity problems. Specific numerical examples are considered to verify the accuracy of the hybrid stress approach and compare it with that of the standard displacement method, especially for highly anisotropic materials. It is that the hybrid stress approach gives much better results than the displacement method. Preliminary work on extensions of this method to three dimensional elasticity is discussed, and the stress shape functions necessary for this extension are included.
Document ID
19880010400
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Oden, J. Tinsley (Computational Mechanics Co. Austin, TX, United States)
Fly, Gerald W. (Computational Mechanics Co. Austin, TX, United States)
Mahadevan, L. (Computational Mechanics Co. Austin, TX, United States)
Date Acquired
September 5, 2013
Publication Date
October 1, 1987
Subject Category
Structural Mechanics
Report/Patent Number
TR-87-05
NASA-CR-179311
NAS 1.26:179311
Accession Number
88N19784
Funding Number(s)
CONTRACT_GRANT: NAS8-37283
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