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arXiv · 2208.11653

Mathematical Effects of Linear Visco-elasticity in Quasi-static Biot Models

Lorena Bociu·Boris Muha·Justin T. Webster
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Abstract

We investigate and clarify the mathematical properties of linear poro-elastic systems in the presence of classical (linear, Kelvin-Voigt) visco-elasticity. In particular, we quantify the time-regularizing and dissipative effects of visco-elasticity in the context of the quasi-static Biot equations. The full, coupled pressure-displacement presentation of the system is utilized, as well as the framework of implicit, degenerate evolution equations, to demonstrate such effects and characterize linear poro-visco-elastic systems. We consider a simple presentation of the dynamics (with convenient boundary conditions, etc.) for clarity in exposition across several relevant parameter ranges. Clear well-posedness results are provided, with associated a priori estimates on the solutions. In addition, precise statements of admissible initial conditions in each scenario are given.

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Lorena Bociu, Boris Muha, Justin T. Webster. 2023-02-04. Mathematical Effects of Linear Visco-elasticity in Quasi-static Biot Models. https://arxiv.org/abs/2208.11653

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