# Global existence of strong solutions to the one-dimensional full model for phase transitions in thermoviscoelastic materials

Elisabetta Rocca; Riccarda Rossi

Applications of Mathematics (2008)

- Volume: 53, Issue: 5, page 485-520
- ISSN: 0862-7940

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topRocca, Elisabetta, and Rossi, Riccarda. "Global existence of strong solutions to the one-dimensional full model for phase transitions in thermoviscoelastic materials." Applications of Mathematics 53.5 (2008): 485-520. <http://eudml.org/doc/37797>.

@article{Rocca2008,

abstract = {This paper is devoted to the analysis of a one-dimensional model for phase transition phenomena in thermoviscoelastic materials. The corresponding parabolic-hyperbolic PDE system features a strongly nonlinear internal energy balance equation, governing the evolution of the absolute temperature $\vartheta $, an evolution equation for the phase change parameter $\chi $, including constraints on the phase variable, and a hyperbolic stress-strain relation for the displacement variable $\{\bf u\}$. The main novelty of the model is that the equations for $\chi $ and $\{\bf u\}$ are coupled in such a way as to take into account the fact that the properties of the viscous and of the elastic parts influence the phase transition phenomenon in different ways. However, this brings about an elliptic degeneracy in the equation for $\{\bf u\}$ which needs to be carefully handled. First, we prove a global well-posedness result for the related initial-boundary value problem. Secondly, we address the long-time behavior of the solutions in a simplified situation. We prove that the $\omega $-limit set of the solution trajectories is nonempty, connected and compact in a suitable topology, and that its elements solve the steady state system associated with the evolution problem.},

author = {Rocca, Elisabetta, Rossi, Riccarda},

journal = {Applications of Mathematics},

keywords = {nonlinear and degenerating PDE system; global existence; uniqueness; long-time behavior of solutions; $\omega $-limit; phase transitions; thermoviscoelastic materials; nonlinear and degenerating PDE system; global existence; uniqueness; long-time behavior of solutions; -limit},

language = {eng},

number = {5},

pages = {485-520},

publisher = {Institute of Mathematics, Academy of Sciences of the Czech Republic},

title = {Global existence of strong solutions to the one-dimensional full model for phase transitions in thermoviscoelastic materials},

url = {http://eudml.org/doc/37797},

volume = {53},

year = {2008},

}

TY - JOUR

AU - Rocca, Elisabetta

AU - Rossi, Riccarda

TI - Global existence of strong solutions to the one-dimensional full model for phase transitions in thermoviscoelastic materials

JO - Applications of Mathematics

PY - 2008

PB - Institute of Mathematics, Academy of Sciences of the Czech Republic

VL - 53

IS - 5

SP - 485

EP - 520

AB - This paper is devoted to the analysis of a one-dimensional model for phase transition phenomena in thermoviscoelastic materials. The corresponding parabolic-hyperbolic PDE system features a strongly nonlinear internal energy balance equation, governing the evolution of the absolute temperature $\vartheta $, an evolution equation for the phase change parameter $\chi $, including constraints on the phase variable, and a hyperbolic stress-strain relation for the displacement variable ${\bf u}$. The main novelty of the model is that the equations for $\chi $ and ${\bf u}$ are coupled in such a way as to take into account the fact that the properties of the viscous and of the elastic parts influence the phase transition phenomenon in different ways. However, this brings about an elliptic degeneracy in the equation for ${\bf u}$ which needs to be carefully handled. First, we prove a global well-posedness result for the related initial-boundary value problem. Secondly, we address the long-time behavior of the solutions in a simplified situation. We prove that the $\omega $-limit set of the solution trajectories is nonempty, connected and compact in a suitable topology, and that its elements solve the steady state system associated with the evolution problem.

LA - eng

KW - nonlinear and degenerating PDE system; global existence; uniqueness; long-time behavior of solutions; $\omega $-limit; phase transitions; thermoviscoelastic materials; nonlinear and degenerating PDE system; global existence; uniqueness; long-time behavior of solutions; -limit

UR - http://eudml.org/doc/37797

ER -

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