Journal
MECHANICS OF TIME-DEPENDENT MATERIALS
Volume 13, Issue 1, Pages 93-115Publisher
SPRINGER
DOI: 10.1007/s11043-008-9068-3
Keywords
Electro-magnetic thermoelasticity; Micropolar theory; Temperature-rate-dependent thermoelasticity; Uniqueness theorem; Reciprocal theorem; Integral representation formulas
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A general model for the linear micropolar electro-magnetic thermoelastic continuum based on the hyperbolic heat equation, which is physically more relevant than the classical thermoelasticity theory in analyzing problems involving very short intervals of time and/or very high heat fluxes, is introduced. An integral identity that involves two admissible processes at different instants is established. Uniqueness theorem is proved, with no definiteness assumption on the elastic constitutive coefficients and no restrictions on the electro-elastic coupling moduli, magneto-elastic coupling moduli, and thermal coupling coefficients other than symmetry conditions. The reciprocity theorem is derived, without the use of Laplace transforms. The integral representation formula is obtained in case instantaneous concentrated, time-continuous or time-harmonic loads are applied. The Maysel's, Somigliana's and Green's formulas are derived. The mixed boundary value problem is considered and a system of five singular Fredholm integral equations is obtained. The results for dynamic classical coupled theory can be easy deduced from the given general model formulated for the temperature-rate dependent thermoelasticity.
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