Results 21 to 30 of about 4,496,925 (290)

Global attractors of the 3D micropolar equations with damping term

open access: yesMathematical Foundations of Computing, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xiaojie Yang, Hui Liu, Chengfeng Sun
openaire   +2 more sources

On solutions of quasilinear wave equations with nonlinear damping terms [PDF]

open access: yesCzechoslovak Mathematical Journal, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Park, Jong Yeoul, Bae, Jeong Ja
openaire   +2 more sources

On the interaction of exponential non-viscous damping with symmetric nonlinearities [PDF]

open access: yes, 2008
This paper studies the interaction between non-viscous damping and nonlinearities for nonlinear oscillators with reflection symmetry. The non-viscous damping function is an exponential damping model which adds a decaying memory property to the damping ...
Wagg, DJ   +6 more
core   +1 more source

Nonlinear Wave Equations With Degenerate Damping and Source Terms [PDF]

open access: yesTransactions of the American Mathematical Society, 2005
In this article we focus on the global well-posedness of the differential equation u t
Barbu, Viorel   +2 more
openaire   +2 more sources

Oscillation of third order differential equation with damping term [PDF]

open access: yesCzechoslovak Mathematical Journal, 2015
The authors study the third-order nonlinear differential equation \[ x'''(t)+q(t)x'(t)+r(t)| x(t)|^\lambda\operatorname{sgn}x(t)=0, \] where \(\lambda>0\), \(q\in C^2(\mathbb{R}_+)\) and \(r\in C^2(\mathbb{R}_+)\) are positive functions. The authors derive sufficient conditions which guarantee several special asymptotic properties of solutions, such as
Bartušek, Miroslav, Došlá, Zuzana
openaire   +2 more sources

Effects of Damping and Reynolds Number on Vortex-Induced Vibrations [PDF]

open access: yes, 2007
Vortex-induced vibrations have been studied experimentally with emphasis on damping and Reynolds number effects. Our system was an elastically-mounted rigid circular cylinder, free to oscillate only transverse to the flow direction, with very low ...
Klamo, Joseph Thomas
core   +1 more source

Auto-Tuning PID Controllers in Terms of Relative Damping [PDF]

open access: yesIFAC Proceedings Volumes, 2000
Abstract In this paper a new auto-tuning method of PID controller is proposed. It combines: modelling of the closed-loop system, modelling of the process, and tuning formulas in terms of the relative damping of the transient response to setpoint changes.
González López, Antonio   +2 more
openaire   +2 more sources

Decay property of solutions for damped wave equations with space–time dependent damping term

open access: yesJournal of Mathematical Analysis and Applications, 2011
There is discussed asymptotic behavior of a solution to the Cauchy problem for the equation \[ u_{tt}-\Delta u+b_{0}(1+| x| ^{2})^{-\alpha /2}(1+t)^{-\beta}u_{t}+| u| ^{\rho -1}u=0,\text{ where } t>0,\, x\in \mathbb {R}^{N},\, b_{0}>0,\, \alpha ,\beta \geq 0, \, \alpha +\beta \in [0,1) \] and the initial data are in a weighted energy spaces.
Lin, Jiayun   +2 more
openaire   +2 more sources

Low frequency damping of metal panels in ambient Air [PDF]

open access: yes, 2008
Mathematical models of structural dynamics are widely used and applied in many branches of science and engineering and it has been argued that many of the shortfalls with these models are due to the fact that the physics of joint dynamics are not ...
Paul Cunningham (1251771)   +8 more
core   +1 more source

On solutions of nondegenerate wave equations with nonlinear damping terms

open access: yesDifferential and Integral Equations, 2001
Let $\Omega $ be a bounded domain in $\Bbb R^N$ with smooth boundary $\partial \Omega$. In this paper, we consider the existence and energy decay of solutions of the following problem: \begin{align} & u_{tt}(t,x)-(a+b (\|\nabla u(t,x)\|_2^2+\|\nabla v(t,x)\|_2^2)^\gamma) \Delta u(t,x)+\beta \Delta^2 u(t,x) \nonumber \\ & \quad+\delta|u_t(t,x)|^{\rho ...
Park, Jong Yeoul, Bae, Jeong Ja
openaire   +3 more sources

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