Long-time existence of solutions to nonlocal nonlinear bidirectional wave equations

Erbay, Hüsnü A. and Erbay, Saadet and Erkip, Albert (2019) Long-time existence of solutions to nonlocal nonlinear bidirectional wave equations. Discrete and Continuous Dynamical Systems, 39 (5). pp. 2877-2891. ISSN 1078-0947 (Print) 1553-5231 (Online)

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Official URL: http://dx.doi.org/10.3934/dcds.2019119


We consider the Cauchy problem defined for a general class of nonlocal wave equations modeling bidirectional wave propagation in a nonlocally and nonlinearly elastic medium whose constitutive equation is given by a convolution integral. We prove a long-time existence result for the nonlocal wave equations with a power-type nonlinearity and a small parameter. As the energy estimates involve a loss of derivatives, we follow the Nash-Moser approach proposed by Alvarez-Samaniego and Lannes. As an application to the long-time existence theorem, we consider the limiting case in which the kernel function is the Dirac measure and the nonlocal equation reduces to the governing equation of one-dimensional classical elasticity theory. The present study also extends our earlier result concerning local well-posedness for smooth kernels to nonsmooth kernels.

Item Type:Article
Uncontrolled Keywords:Long-time existence; nonlocal wave equation; Nash-Moser iteration; improved Boussinesq equation
Subjects:Q Science > QA Mathematics > QA299.6-433 Analysis
ID Code:36819
Deposited By:Albert Erkip
Deposited On:30 Jan 2019 15:21
Last Modified:22 Mar 2019 14:34

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