Results 21 to 30 of about 1,325 (149)

Semidiscrete Toda lattices [PDF]

open access: yesTheoretical and Mathematical Physics, 2012
15 ...
openaire   +2 more sources

Weak solvability of a hyperbolic integro-differential equation with integral condition

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
By using the method of semidiscretization in time also called the Rothe's method, we prove the existence, uniqueness of the weak solution and its continuous dependence upon data, for an hyperbolic integro-differential equation with initial, Neumann and ...
D. Belakroum, A. Guezane-Lakoud
doaj   +1 more source

An Error Indicator for Semidiscrete Schemes [PDF]

open access: yes, 2006
The eectiv eness of adaptive mesh renemen t strategies (AMR) relies heavily on the quality of the indicator that drives the process of mesh renemen t and coarsening. In this work, an indicator based on the local production of entropy is proposed, extending previous work by the authors on one-dimensional schemes, based on staggered cells.
D. MAROBIN, PUPPO, GABRIELLA ANNA
openaire   +4 more sources

Self-Tuning Algorithm for Tuneable Clamping Table for Chatter Suppression in Blade Recontouring

open access: yesApplied Sciences, 2021
The production and repair of blades for aerospace engines and energy turbines is a complex process due their inherently low stiffness and damping properties.
Markel Sanz-Calle   +4 more
doaj   +1 more source

Discontinuous Galerkin method for an integro-differential equation modeling dynamic fractional order viscoelasticity [PDF]

open access: yes, 2015
An integro-differential equation, modeling dynamic fractional order viscoelasticity, with a Mittag-Leffler type convolution kernel is considered.
Larsson, Stig   +2 more
core   +2 more sources

Stability under Galerkin truncation of A-stable Runge--Kutta discretizations in time [PDF]

open access: yes, 2014
We consider semilinear evolution equations for which the linear part is normal and generates a strongly continuous semigroup and the nonlinear part is sufficiently smooth on a scale of Hilbert spaces.
Oliver, Marcel, Wulff, Claudia
core   +2 more sources

A Composite Algorithm for Numerical Solutions of Two-Dimensional Coupled Burgers’ Equations

open access: yesJournal of Mathematics, 2021
In this study, a new composite algorithm with the help of the finite difference and the modified cubic trigonometric B-spline differential quadrature method is developed.
Vikas Kumar   +2 more
doaj   +1 more source

Semidiscretization for a Doubly Nonlinear Parabolic Equation Related to the p(x)-Laplacian

open access: yesInternational Journal of Differential Equations, 2019
This paper studies a time discretization for a doubly nonlinear parabolic equation related to the p(x)-Laplacian by using Euler-forward scheme. We investigate existence, uniqueness, and stability questions and prove existence of the global compact ...
Hamid El Bahja   +2 more
doaj   +1 more source

The Basics of Time-Domain-Based Milling Stability Prediction Using Frequency Response Function

open access: yesJournal of Manufacturing and Materials Processing, 2020
This study presents the fundamentals of the usage of frequency response functions (FRF) directly in time-domain-based methods. The methodology intends to combine the advantages of frequency- and time-domain-based techniques to determine the stability of ...
Zoltan Dombovari   +2 more
doaj   +1 more source

Near-optimal perfectly matched layers for indefinite Helmholtz problems

open access: yes, 2015
A new construction of an absorbing boundary condition for indefinite Helmholtz problems on unbounded domains is presented. This construction is based on a near-best uniform rational interpolant of the inverse square root function on the union of a ...
Druskin, Vladimir   +2 more
core   +1 more source

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