Geodesic
On solutions of quasilinear wave equations with nonlinear damping terms
Czechoslovak Mathematical Journal, Tome 50 (2000) no. 3, pp. 565-585 Cet article a éte moissonné depuis la source Czech Digital Mathematics Library

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In this paper we consider the existence and asymptotic behavior of solutions of the following problem: \[ u_{tt}(t,x)-(\alpha +\beta \Vert \nabla u(t,x)\Vert _2^2 +\beta \Vert \nabla v(t,x)\Vert _2^2)\Delta u(t,x) +\delta |u_t(t,x)|^{p-1}u_t(t,x) \quad =\mu |u(t,x)|^{q-1}u(t,x), \quad x \in \Omega ,\quad t \ge 0, v_{tt}(t,x)-(\alpha +\beta \Vert \nabla u(t,x)\Vert _2^2+ \beta \Vert \nabla v(t,x)\Vert _2^2) \Delta v(t,x) +\delta |v_t(t,x)|^{p-1}v_t(t,x) \quad =\mu |v(t,x)|^{q-1}v(t,x), \quad x \in \Omega ,\quad t \ge 0, u(0,x)=u_0(x),\quad u_t(0,x)=u_1(x), \quad x \in \Omega , v(0,x)=v_0(x),\quad v_t(0,x)=v_1(x), \quad x \in \Omega , u|_{_{\partial \Omega }}=v|_{_{\partial \Omega }}=0 \] where $q > 1$, $ p \ge 1$, $ \delta >0$, $ \alpha > 0$, $ \beta \ge 0 $, $\mu \in \mathbb R $ and $\Delta $ is the Laplacian in $\mathbb R^N$.
In this paper we consider the existence and asymptotic behavior of solutions of the following problem: \[ u_{tt}(t,x)-(\alpha +\beta \Vert \nabla u(t,x)\Vert _2^2 +\beta \Vert \nabla v(t,x)\Vert _2^2)\Delta u(t,x) +\delta |u_t(t,x)|^{p-1}u_t(t,x) \quad =\mu |u(t,x)|^{q-1}u(t,x), \quad x \in \Omega ,\quad t \ge 0, v_{tt}(t,x)-(\alpha +\beta \Vert \nabla u(t,x)\Vert _2^2+ \beta \Vert \nabla v(t,x)\Vert _2^2) \Delta v(t,x) +\delta |v_t(t,x)|^{p-1}v_t(t,x) \quad =\mu |v(t,x)|^{q-1}v(t,x), \quad x \in \Omega ,\quad t \ge 0, u(0,x)=u_0(x),\quad u_t(0,x)=u_1(x), \quad x \in \Omega , v(0,x)=v_0(x),\quad v_t(0,x)=v_1(x), \quad x \in \Omega , u|_{_{\partial \Omega }}=v|_{_{\partial \Omega }}=0 \] where $q > 1$, $ p \ge 1$, $ \delta >0$, $ \alpha > 0$, $ \beta \ge 0 $, $\mu \in \mathbb R $ and $\Delta $ is the Laplacian in $\mathbb R^N$.
Classification : 35B35, 35L15, 35L70, 65M60
Keywords: quasilinear wave equation; existence and uniqueness; asymptotic behavior; Galerkin method 
@article{CMJ_2000_50_3_a10,
     author = {Park, Jong Yeoul and Bae, Jeong Ja},
     title = {On solutions of quasilinear wave equations with nonlinear damping terms},
     journal = {Czechoslovak Mathematical Journal},
     pages = {565--585},
     year = {2000},
     volume = {50},
     number = {3},
     mrnumber = {1777478},
     zbl = {1079.35533},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000_50_3_a10/}
}
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Park, Jong Yeoul; Bae, Jeong Ja. On solutions of quasilinear wave equations with nonlinear damping terms. Czechoslovak Mathematical Journal, Tome 50 (2000) no. 3, pp. 565-585. http://geodesic.mathdoc.fr/item/CMJ_2000_50_3_a10/