Browsing by Author "Erbay, Saadet"
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The CamassaHolm equation as the longwave limit of the improved Boussinesq equation and of a class of nonlocal wave equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (AIMS, 201611)In the present study we prove rigorously that in the longwave limit, the unidirectional solutions of a class of nonlocal wave equations to which the improved Boussinesq equation belongs are well approximated by the solutions ... 
Comparison of nonlocal nonlinear wave equations in the longwave limit
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Taylor & Francis, 20201117)We consider a general class of convolutiontype nonlocal wave equations modeling bidirectional nonlinear wave propagation. The model involves two small positive parameters measuring the relative strengths of the nonlinear ... 
Convergence of a semidiscrete numerical method for a class of nonlocal nonlinear wave equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (EDP Sciences, 20180913)In this article, we prove the convergence of a semidiscrete numerical method applied to a general class of nonlocal nonlinear wave equations where the nonlocality is introduced through the convolution operator in space. ... 
Derivation of generalized CamassaHolm equations from Boussinesqtype equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Informa Group, 2016)In this paper we derive generalized forms of the CamassaHolm (CH) equation from a Boussinesqtype equation using a twoparameter asymptotic expansion based on two small parameters characterizing nonlinear and dispersive ... 
Derivation of the CamassaHolm equations for elastic waves
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 20150605)In this paper we provide a formal derivation of both the Camassa–Holm equation and the fractional Camassa–Holm equation for the propagation of smallbutfinite amplitude long waves in a nonlocally and nonlinearly elastic ... 
Existence and stability of traveling waves for a class of nonlocal nonlinear equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 20150501)In this article we are concerned with the existence and orbital stability of traveling wave solutions of a general class of nonlocal wave equations: utt−Luxx=B(±up−1u)xx, p>1. The main characteristic of this class of ... 
Instability and stability properties of traveling waves for the double dispersion equation
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 201603)In this article we are concerned with the instability and stability properties of traveling wave solutions of the double dispersion equation View the MathML source for View the MathML source, View the MathML source. The ... 
Longtime existence of solutions to nonlocal nonlinear bidirectional wave equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (American Institute of Mathematical Sciences, 201905)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 ... 
Numerical computation of solitary wave solutions of the Rosenau equation
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 202011)We construct numerically solitary wave solutions of the Rosenau equation using the Petviashvili iteration method. We first summarize the theoretical results available in the literature for the existence of solitary wave ... 
On the convergence of the nonlocal nonlinear model to the classical elasticity equation
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 202112)We consider a general class of convolutiontype nonlocal wave equations modeling bidirectional propagation of nonlinear waves in a continuous medium. In the limit of vanishing nonlocality we study the behavior of solutions ... 
On the decoupling of the improved Boussinesq equation into two uncoupled CamassaHolm equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (American Institute of Mathematical Sciences, 201706)We rigorously establish that, in the longwave regime characterized by the assumptions of long wavelength and small amplitude, bidirectional solutions of the improved Boussinesq equation tend to associated solutions of two ... 
A semidiscrete numerical method for convolutiontype unidirectional wave equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 20210515)Numerical approximation of a general class of nonlinear unidirectional wave equations with a convolutiontype nonlocality in space is considered. A semidiscrete numerical method based on both a uniform space discretization ... 
Some remarks on the stability and instability properties of solitary waves for the double dispersion equation
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Estonian Academy of Sciences, 2015)In this article we give a review of our recent results on the instability and stability properties of travelling wave solutions of the double dispersion equation utt − uxx + auxxxx − buxxtt = −(up−1u)xx for p > 1, a ≥ b ... 
Thresholds for global existence and blowup in a general class of doubly dispersive nonlocal wave equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Elsevier, 201401)In this paper we study the global existence and blowup of solutions for a general class of nonlocal nonlinear wave equations with powertype nonlinearities, View the MathML source, where the nonlocality enters through two ... 
Transverse linear instability of solitary waves for coupled longwaveshortwave interaction equations
Erbay, Hüsnü Ata; Erbay, Saadet (Elsevier, 201212)In this paper, we investigate the transverse linear instability of onedimensional solitary wave solutions of the coupled system of twodimensional longwave–shortwave interaction equations. We show that the onedimensional ... 
Unidirectional wave motion in a nonlocally and nonlinearly elastic medium: The KdV, BBM and CH equations
Erbay, Hüsnü Ata; Erbay, Saadet; Erkip, A. (Estonian Academy of Sciences, 2015)We consider unidirectional wave propagation in a nonlocally and nonlinearly elastic medium whose constitutive equation is given by a convolution integral with a suitable kernel function. We first give a brief review of ...
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