scholarly journals Blow up of positive initial energy solutions for a wave equation with fractional boundary dissipation

2011 ◽  
Vol 24 (10) ◽  
pp. 1729-1734 ◽  
Author(s):  
Liqing Lu ◽  
Shengjia Li
Keyword(s):  
Wave Equation ◽  
Blow Up ◽  
Initial Energy ◽  
Positive Initial Energy ◽  
Boundary Dissipation

FINITE TIME BLOW-UP FOR THE NONLINEAR FOURTH-ORDER DISPERSIVE-DISSIPATIVE WAVE EQUATION AT HIGH ENERGY LEVEL

2012 ◽  
Vol 23 (05) ◽  
pp. 1250060 ◽  
Author(s):  
RUNZHANG XU ◽  
YANBING YANG
Keyword(s):  
Wave Equation ◽  
Fourth Order ◽  
Blow Up ◽  
Initial Boundary ◽  
Initial Boundary Value Problem ◽  
High Energy ◽  
Initial Energy ◽  
High Energy Level ◽  
Positive Initial Energy ◽  
Dissipative Wave Equation

In this paper, we investigate the initial boundary value problem of the nonlinear fourth-order dispersive-dissipative wave equation. By using the concavity method, we establish a blow-up result for certain solutions with arbitrary positive initial energy.

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 General decay and blow up of solutions for a variable-exponent viscoelastic double-Kirchhoff type wave equation with nonlocal degenerate damping

2021 ◽  
Author(s):  
Mohammad Shahrouzi ◽  
Jorge Ferreira ◽  
Erhan Pişkin
Keyword(s):  
Wave Equation ◽  
Variable Exponent ◽  
Blow Up ◽  
Type Equation ◽  
Initial Energy ◽  
General Decay ◽  
Kirchhoff Type ◽  
Type Wave ◽  
Positive Initial Energy ◽  
Viscoelastic Term

In this paper we consider a viscoelastic double-Kirchhoff type wave equation of the form $$ u_{tt}-M_{1}(\|\nabla u\|^{2})\Delta u-M_{2}(\|\nabla u\|_{p(x)})\Delta_{p(x)}u+(g\ast\Delta u)(x,t)+\sigma(\|\nabla u\|^{2})h(u_{t})=\phi(u), $$ where the functions $M_{1},M_{2}$ and $\sigma, \phi$ are real valued functions and $(g\ast\nabla u)(x,t)$ is the viscoelastic term which are introduced later. Under appropriate conditions for the data and exponents, the general decay result and blow-up of solutions are proved with positive initial energy. This study extends and improves the previous results in the literature to viscoelastic double-Kirchhoff type equation with degenerate nonlocal damping and variable-exponent nonlinearities.

scholarly journals Blow-up results for a quasilinear von Karman equation of memory type

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Mi Jin Lee ◽  
Jum-Ran Kang
Keyword(s):  
Blow Up ◽  
Suitable Condition ◽  
Nondecreasing Function ◽  
Initial Energy ◽  
Nonincreasing Function ◽  
Positive Initial Energy ◽  
Von Karman ◽  
Von Karman Equation ◽  
Memory Type ◽  
Von Kármán

Abstract In this paper, we consider the blow-up result of solution for a quasilinear von Karman equation of memory type with nonpositive initial energy as well as positive initial energy. For nonincreasing function $g>0$ g > 0 and nondecreasing function f, we prove a finite time blow-up result under suitable condition on the initial data.

scholarly journals Global existence and nonexistence for a class of finitely degenerate coupled parabolic systems with high initial energy level

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Yuxuan Chen ◽  
Jiangbo Han
Keyword(s):  
Energy Level ◽  
Global Existence ◽  
Blow Up ◽  
Parabolic Systems ◽  
Initial Energy ◽  
Blowup Time ◽  
Positive Initial Energy ◽  
Existence And Nonexistence ◽  
Nonexistence Of Solutions ◽  
Coupled Parabolic Systems

<p style='text-indent:20px;'>In this paper, we consider a class of finitely degenerate coupled parabolic systems. At high initial energy level <inline-formula><tex-math id="M1">\begin{document}$ J(u_{0})&gt;d $\end{document}</tex-math></inline-formula>, we present a new sufficient condition to describe the global existence and nonexistence of solutions for problem (1)-(4) respectively. Moreover, by applying the Levine's concavity method, we give some affirmative answers to finite time blow up of solutions at arbitrary positive initial energy <inline-formula><tex-math id="M2">\begin{document}$ J(u_{0})&gt;0 $\end{document}</tex-math></inline-formula>, including the estimate of upper bound of blowup time.</p>

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