Abstract
This paper is concerned with the isothermal linear theory of swelling porous elastic soils. Initial-boundary value problems are formulated for the linear dynamic theory of an isothermal mixture consisting of three components: an elastic solid, a viscous fluid and a gas. Then the uniqueness and continuous dependence problems are discussed in connection with the solutions of such initial-boundary value problems. The uniqueness results are established under mild positive semi-definiteness assumptions or with no definiteness assumptions upon the internal energy. Various estimates are established for describing the continuous dependence of solutions with respect to the external given data. In this aim the Lagrange identity and the logarithmic convexity methods are used.
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