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首页> 外文期刊>International journal of dynamical systems and differential equations >Global existence and blow up of positive initial energy solution of a quasilinear wave equation with nonlinear damping and source terms
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Global existence and blow up of positive initial energy solution of a quasilinear wave equation with nonlinear damping and source terms

机译:非线性阻尼和源术语Quasilinear波方程正初始能量解的全局存在与爆破

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摘要

In this paper, we consider a quasilinearwave equation having nonlinear damping and source termsu(tt)-Delta u(t)- Sigma(n)(i=1) partial derivative/partial derivative x(i) [sigma(i)(x, u(xi)) + beta(i)(x, u(txi))] + f(x, u(t)) = g(x, u)and obtained global existence and blow up results under certain polynomial growth conditions on the nonlinear functions sigma(i), beta(i), (i = 1, 2, ..., n), f and g. We obtain global existence result for positive initial energy solution using Galerkin approximation procedure and nonexistence (blow up) result using the technique introduced by Georgiev and Todorova (1994) with little modification for our problem.
机译:在本文中,我们考虑了具有非线性阻尼的Quasilinearwave方程和源极序(TT) - Δ-delta u(t) - sigma(n)(i = 1)部分衍生/部分导数x(i)[sigma(i)(x ,U(xi))+ beta(i)(x,u(txi))] + f(x,u(t))= g(x,u)并在某些多项式生长条件下获得全局存在和爆炸结果在非线性函数上Σ(I),β(I),(i = 1,2,...,n),f和g。我们使用Galerkin近似程序和不存在的初始能源解决方案获得全球存在结果,并使用Georgiev和Todorova(1994)介绍的技术对我们的问题进行了很少的修改。

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