The Temperature Dependence of the Set of All Equilibrium States of a Two-Phase Thermoelastic Medium

In this paper, the second part of studying the set of all equilibrium states of a two-phase thermoelastic medium has been presented. An equilibrium state of a two-phase elastic medium is understood as an ordered pair: a displacement field and a spatial phase distribution, which provide the free energy functional with a global minimum. For thermoelastic media, the free energy densities are obtained by adding the terms associated with the thermal stresses of each phase and the terms associated with the energies of each phase in the unstressed state at zero stress-temperature tensors to the strain energy densities. The temperature dependence of the set of all equilibrium states of a two-phase thermoelastic medium has been found and studied under zero Dirichlet boundary conditions on the displacement field and certain restrictions on the elasticity tensors, the strain tensors providing each phase with the stress-free state at the initial temperature, the stress-temperature tensors, and terms in the definition of the free energy densities associated with the energies of each phase in the stress-free state at zero stress-temperature tensors.

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Publication Details

Journal
Vestnik St Petersburg University Mathematics
Published
2025-03-01
DOI
https://doi.org/10.1134/s1063454125700037
Primary Topic
Elasticity and Wave Propagation
Type
article
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The Temperature Dependence of the Set of All Equilibrium States of a Two-Phase Thermoelastic Medium

Egor A. Efimov
Vestnik St Petersburg University Mathematics
Elasticity and Wave Propagation
article

The Temperature Dependence of the Set of All Equilibrium States of a Two-Phase Thermoelastic Medium

Egor A. Efimov
article en

Abstract

In this paper, the second part of studying the set of all equilibrium states of a two-phase thermoelastic medium has been presented. An equilibrium state of a two-phase elastic medium is understood as an ordered pair: a displacement field and a spatial phase distribution, which provide the free energy functional with a global minimum. For thermoelastic media, the free energy densities are obtained by adding the terms associated with the thermal stresses of each phase and the terms associated with the energies of each phase in the unstressed state at zero stress-temperature tensors to the strain energy densities. The temperature dependence of the set of all equilibrium states of a two-phase thermoelastic medium has been found and studied under zero Dirichlet boundary conditions on the displacement field and certain restrictions on the elasticity tensors, the strain tensors providing each phase with the stress-free state at the initial temperature, the stress-temperature tensors, and terms in the definition of the free energy densities associated with the energies of each phase in the stress-free state at zero stress-temperature tensors.

Vestnik St Petersburg University MathematicsVol. 58(1)
St Petersburg University (RU), Institute of Problems of Mechanical Engineering (RU)
Openalex Percentile: Top 88%
Elasticity and Wave Propagation
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