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Record Details

Record 44 of 21014
A simplified method for elastic-plastic-creep structural analysis
Author and Affiliation:
Kaufman, A.(NASA Lewis Research Center, Cleveland, OH, United States)
Abstract: A 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.
Publication Date: Jan 01, 1985
Document ID:
19850040999
(Acquired Nov 28, 1995)
Accession Number: 85A23150
Subject Category: STRUCTURAL MECHANICS
Report/Patent Number: ASME PAPER 84-GT-191
Document Type: Journal Article
Publication Information: ASME, Transactions, Journal of Engineering for Gas Turbines and Power (ISSN 0022-0825); 107; 231-237
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Lewis Research Center; Cleveland, OH, United States
Description: 7p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: COMPUTER PROGRAMS; FINITE ELEMENT METHOD; NONLINEARITY; STRESS-STRAIN RELATIONSHIPS; CREEP PROPERTIES; INELASTIC STRESS; ITERATIVE SOLUTION; PLASTIC PROPERTIES; PREDICTION ANALYSIS TECHNIQUES; STRESS RELAXATION
Imprint And Other Notes: (American Society of Mechanical Engineers, International Gas Turbine Conference and Exhibit, 29th, Amsterdam, Netherlands, June 4-7, 1984) ASME, Transactions, Journal of Engineering for Gas Turbines and Power (ISSN 0022-0825), vol. 107, Jan. 1985, p. 231-237.
Availability Source: Other Sources
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