scholarly journals Blow up of negative initial-energy solutions of a system of nonlinear wave equations with variable-exponent nonlinearities

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Salim A. Messaoudi ◽  
Ala A. Talahmeh
Keyword(s):  
Nonlinear Wave ◽  
Variable Exponent ◽  
Wave Equations ◽  
Blow Up ◽  
Initial Energy ◽  
Nonlinear Wave Equations ◽  
Well Posedness

<p style='text-indent:20px;'>This work is concerned with a system of wave equations with variable-exponent nonlinearities acting in both equations. We, first, discuss the well-posedness then prove a blow up result for solutions with negative initial energy.</p>

scholarly journals Blow-Up of Certain Solutions to Nonlinear Wave Equations in the Kirchhoff-Type Equation with Variable Exponents and Positive Initial Energy

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Loay Alkhalifa ◽  
Hanni Dridi ◽  
Khaled Zennir
Keyword(s):  
Wave Equation ◽  
Nonlinear Wave ◽  
Wave Equations ◽  
Blow Up ◽  
Type Equation ◽  
Initial Energy ◽  
Nonlinear Wave Equations ◽  
Variable Exponents ◽  
Quasilinear Wave Equation ◽  
Positive Initial Energy

This paper is concerned with the blow-up of certain solutions with positive initial energy to the following quasilinear wave equation: u t t − M N u t Δ p · u + g u t = f u . This work generalizes the blow-up result of solutions with negative initial energy.

scholarly journals Existence, Asymptotic Behaviour, and Blow up of Solutions for a Class of Nonlinear Wave Equations with Dissipative and Dispersive Terms

2009 ◽  
Vol 64 (5-6) ◽  
pp. 315-326
Author(s):  
Necat Polat ◽  
Doğan Kaya
Keyword(s):  
Asymptotic Behaviour ◽  
Nonlinear Wave ◽  
Wave Equations ◽  
Nonlinear Term ◽  
Blow Up ◽  
Suitable Condition ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
Initial Energy ◽  
Nonlinear Wave Equations

Abstract We consider the existence, both locally and globally in time, the asymptotic behaviour, and the blow up of solutions to the initial boundary value problem for a class of nonlinear wave equations with dissipative and dispersive terms. Under rather mild conditions on the nonlinear term and the initial data we prove that the above-mentioned problem admits a unique local solution, which can be continued to a global solution, and the solution decays exponentially to zero as t →+∞. Finally, under a suitable condition on the nonlinear term, we prove that the local solutions with negative and nonnegative initial energy blow up in finite time.

scholarly journals Blow up of solutions for 3D quasi-linear wave equations with positive initial energy

2017 ◽  
Vol 33 (1) ◽  
pp. 97-106
Author(s):  
AMIR PEYRAVI ◽  
Keyword(s):  
Nonlinear Wave ◽  
Wave Equations ◽  
Blow Up ◽  
Nonlinear Damping ◽  
Initial Energy ◽  
Nonlinear Wave Equations ◽  
Linear Wave ◽  
Positive Initial Energy ◽  
Nonlinear Anal ◽  
Klein Gordon

In this paper we investigate blow up property of solutions for a system of nonlinear wave equations with nonlinear dissipations and positive initial energy in a bounded domain in R3. Our result improves and extends earlier results in the literature such as the ones in [Zhou, J. and Mu, C., The lifespan for 3D quasilinear wave equations with nonlinear damping terms, Nonlinear Anal., 74 (2011), 5455–5466] and [Pis¸kin, E., Uniform decay and blow-up of solutions for coupled nonlinear Klein-Gordon equations with nonlinear damping terms, Math. Meth. Appl. Scie., 37 (2014), No. 18, 3036–3047] in which the nonexistence results obtained only for negative initial energy or the one in [Ye, Y., Global existence and nonexistence of solutions for coupled nonlinear wave equations with damping and source terms, Bull. Korean Math. Soc., 51 (2014), No. 6, 1697–1710] where blow up results have been not addressed. Estimate for the lower bound of the blow up time is also given.

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