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A viscoplastic constitutive theory for metal matrix composites at high temperature

Author
Robinson, David N.
Published
Apr 1, 1988.
Physical Description
1 electronic document
Additional Creators
Duffy, Stephen F. and Ellis, John R.
Online Version

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Summary
A viscoplastic constitutive theory is presented for representing the high temperature deformation behavior of metal matrix composites. The point of view taken is a continuum one where the composite is considered a material in its own right, with its own properties that can be determined for the composite as a whole. It is assumed that a single preferential (fiber) direction is identifiable at each material point (continuum element) admitting the idealization of local transverse isotropy. A key ingredient is the specification of an experimental program for the complete determination of the material functions and parameters for characterizing a particular metal matrix composite. The parameters relating to the strength of anisotropy can be determined through tension/torsion tests on longitudinally and circumferentially reinforced thin walled tubes. Fundamental aspects of the theory are explored through a geometric interpretation of some basic features analogous to those of the classical theory of plasticity.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19880012116.
Accession ID: 88N21500.
NASA. Lewis Research Center, Nonlinear Constitutive Relations for High Temperature Applications, 1986; p 7-25.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15695075