The lifespan for nonlinear wave equations with multiple propagation speeds in 3D
β Scribed by Du Yi; Zhou Yi
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 226 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0362-546X
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π SIMILAR VOLUMES
We prove that if the displacement coefficient of the damping of the 3D wave equation is a positive constant on the interval (-l, l), for large enough l > 0, then this equation has a strong global attractor in H 1 0 (β¦) Γ L 2 (β¦). We also show that this attractor is a bounded subset of H 2 (β¦) β© H 1
A weak solution of the coupled, acoustic-elastic, wave propagation problem for a flexible porous material is proposed for a 3-D continuum. Symmetry in the matrix equations; with respect to both volume, i.e. 'porous frame'-'pore fluid', and surface, i.e. 'porous frame/pore fluid'-'non-porous media',