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A simplified orthotropic formulation of the viscoplasticity theory based on overstressAn orthotropic, small strain viscoplasticity theory based on overstress is presented. In each preferred direction the stress is composed of time (rate) independent (or plastic) and viscous (or rate dependent) contributions. Tension-compression asymmetry can depend on direction and is included in the model. Upon a proper choice of a material constant one preferred direction can exhibit linear elastic response while the other two deform in a viscoplastic manner.
Document ID
19880012121
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sutcu, M. (Rensselaer Polytechnic Inst. Troy, NY, United States)
Krempl, E. (Rensselaer Polytechnic Inst. Troy, NY, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1988
Publication Information
Publication: NASA. Lewis Research Center, Nonlinear Constitutive Relations for High Temperature Applications, 1986
Subject Category
Structural Mechanics
Accession Number
88N21505
Funding Number(s)
CONTRACT_GRANT: NAG3-262
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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