Existence and stability of viscoelastic shock profiles

Details Existence and stability of viscoelastic shock profiles Existence and stability of viscoelastic shock profiles

2010-06-08

arxiv.org/abs/1006.1665v1

Mathematics

Analysis of PDEs

43 pages, 12 figures

Scientific paper

We investigate existence and stability of viscoelastic shock profiles for a class of planar models including the incompressible shear case studied by Antman and Malek-Madani. We establish that the resulting equations fall into the class of symmetrizable hyperbolic--parabolic systems, hence spectral stability implies linearized and nonlinear stability with sharp rates of decay. The new contributions are treatment of the compressible case, formulation of a rigorous nonlinear stability theory, including verification of stability of small-amplitude Lax shocks, and the systematic incorporation in our investigations of numerical Evans function computations determining stability of large-amplitude and or nonclassical type shock profiles.

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