Results 31 to 40 of about 2,627,124 (242)

A Two-Grid Finite Element Method for a Second-Order Nonlinear Hyperbolic Equation

open access: yes, 2014
We present a two-grid finite element scheme for the approximation of a second-order nonlinear hyperbolic equation in two space dimensions. In the two-grid scheme, the full nonlinear problem is solved only on a coarse grid of size . The nonlinearities are
Chuanjun Chen, Wei Liu, Xin Zhao
semanticscholar   +1 more source

Quasi hyperbolic function expansion method and tanh-function method for solving vibrating string equation and elastic rod equation

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
This paper applies the quasi hyperbolic function expansion method and the modified extended tanh-function method to exactly solve the nonlinear vibrating string equation and the elastic rod equation.
Yi Tian
doaj   +1 more source

Application of decomposition to hyperbolic, parabolic, and elliptic partial differential equations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1989
The decomposition method is applied to examples of hyperbolic, parabolic, and elliptic partial differential equations without use of linearizatlon techniques.
G. Adomian
doaj   +1 more source

The optical soliton solutions of nonlinear Schrödinger equation with quintic non-Kerr nonlinear term

open access: yesResults in Physics, 2023
The purpose of this paper is to study the optical soliton solutions of nonlinear Schrödinger equation with quintic non-Kerr nonlinear term describing the nonlinear wave state of optical solitons, which is a noteworthy and important model in optical fiber
Kun Zhang, Tianyong Han
doaj   +1 more source

The First Integral Method to the Nonlinear Schrodinger Equations in Higher Dimensions

open access: yesAbstract and Applied Analysis, 2013
The first integral method introduced by Feng is adopted for solving some important nonlinear partial differential equations, including the (2 + 1)-dimensional hyperbolic nonlinear Schrodinger (HNLS) equation, the generalized nonlinear Schrodinger (GNLS ...
Shoukry Ibrahim Atia El-Ganaini
doaj   +1 more source

Analytical solutions of the strain wave equation for an elastic rod with finite deformation [PDF]

open access: yesAIP Advances
This study determines the exact solutions for a nonlinear strain wave equation, which characterizes wave propagation within circular elastic rods under finite deformation.
T. M. Sekhesa   +2 more
doaj   +1 more source

Abundant Explicit and Exact Solutions for the Variable Coefficient mKdV Equations

open access: yesAbstract and Applied Analysis, 2013
This paper is concerned with the variable coefficients mKdV (VC-mKdV) equation. First, through some transformation we convert VC-mKdV equation into the constant coefficient mKdV equation.
Xiaoxiao Zheng, Yadong Shang, Yong Huang
doaj   +1 more source

The limit of vanishing viscosity for doubly nonlinear parabolic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
We show that solutions of the doubly nonlinear parabolic equation \begin{equation*} \frac{\partial b(u)}{\partial t} - \epsilon \operatorname{div}(a(\nabla u)) + \operatorname{div}(f(u)) = g \end{equation*} converge in the limit $\epsilon ...
Ales Matas, Jochen Merker
doaj   +1 more source

The attractor for a nonlinear hyperbolic equation in the unbounded domain

open access: yes, 2001
We study the long-time behavior of solutions for damped nonlinear hyperbolic equations in the unbounded domains. It is proved that under the natural assumptions these equations possess the locally compact attractors which may have the infinite ...
S. Zelik
semanticscholar   +1 more source

A Class of Nonlinear Hyperbolic Equations

open access: yesDemonstratio Mathematica, 1989
Let \(\Phi:[0,T] \times X \to(-\infty,\infty)\) be measurable with respect to the \(\sigma\)-algebra generated in \([0,T] \times X\) by products of Lebesgue sets in \([0,T]\) and Borel sets in \(X\); \(\Phi (t,\cdot)\) is lower semicontinuous and convex, and \(\partial \Phi\) denotes the subdifferential of \(\Phi (t,\cdot)\).
openaire   +2 more sources

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