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dc.contributor.authorSchreyer, Howarden_US
dc.contributor.authorMaudlin, Paulen_US
dc.date.accessioned2006-03-11T03:17:21Z
dc.date.available2006-03-11T03:17:21Z
dc.date.copyright2005
dc.date.issued2005
dc.identifier.citationPhil. Trans. R. Soc. A (2005) 363, 2517-2541en_US
dc.identifier.issn1364-503Xen_US
dc.identifier.urihttp://hdl.handle.net/1928/524
dc.descriptionThis paper was the result of a cooperative research program between the University of New Mexico and Los Alamos National Laboratoryen_US
dc.description.abstractExperimental data associated with plastic deformations indicate that the temperature is less than that predicted from dissipation based on plastic work. To obtain reasonable correlation between theoretical and experimental results, the plastic work is often multiplied by a constant β. This paper provides an alternative thermodynamic framework in which it is proposed that there is an additional internal energy associated with dislocation pile-up or increase in dislocation density. The form of this internal energy follows from experimental data that relates flow stress to dislocation density and to equivalent plastic strain. The result is that β is not a constant but a derived function. Representative results for β and temperature as functions of effective plastic strain are provided for both an uncoupled and a coupled thermoplastic theory. In addition to providing features that are believed to be representative of many metals, the formulation can be used as a basis for more advanced theories such as those needed for large deformations and general forms of internal energy.en_US
dc.format.extent1837 bytes
dc.format.extent3099738 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.publisherThe Royal Societyen_US
dc.relation.ispartofseriesPhilosphical Transactions of the Royal Societyen_US
dc.relation.ispartofseriesVol. 363, pp. 2517-2541en_US
dc.subjectthermodynamics; thermal plasticity; dislocation density; metal constitutive equationsen_US
dc.titleThermodynamically consistent relations involving plasticity, internal energy and thermal effectsen_US
dc.typeArticleen_US


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