NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A simplified method for elastic-plastic-creep structural analysisA simplified inelastic analysis computer program (ANSYPM) was developed for predicting the stress-strain history at the critical location of a thermomechanically cycled structure from an elastic solution. The program uses an iterative and incremental procedure to estimate the plastic strains from the material stress-strain properties and a plasticity hardening model. Creep effects are calculated on the basis of stress relaxation at constant strain, creep at constant stress or a combination of stress relaxation and creep accumulation. The simplified method was exercised on a number of problems involving uniaxial and multiaxial loading, isothermal and nonisothermal conditions, dwell times at various points in the cycles, different materials and kinematic hardening. Good agreement was found between these analytical results and nonlinear finite element solutions for these problems. The simplified analysis program used less than 1 percent of the CPU time required for a nonlinear finite element analysis.
Document ID
19850040999
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kaufman, A.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: ASME, Transactions, Journal of Engineering for Gas Turbines and Power
Volume: 107
ISSN: 0022-0825
Subject Category
Structural Mechanics
Report/Patent Number
ASME PAPER 84-GT-191
Accession Number
85A23150
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available