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Plate and butt-weld stresses beyond elastic limit, material and structural modelingUltimate safety factors of high performance structures depend on stress behavior beyond the elastic limit, a region not too well understood. An analytical modeling approach was developed to gain fundamental insights into inelastic responses of simple structural elements. Nonlinear material properties were expressed in engineering stresses and strains variables and combined with strength of material stress and strain equations similar to numerical piece-wise linear method. Integrations are continuous which allows for more detailed solutions. Included with interesting results are the classical combined axial tension and bending load model and the strain gauge conversion to stress beyond the elastic limit. Material discontinuity stress factors in butt-welds were derived. This is a working-type document with analytical methods and results applicable to all industries of high reliability structures.
Document ID
19910007100
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Verderaime, V. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1991
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TP-3075
M-654
NAS 1.60:3075
Accession Number
91N16413
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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