Results 41 to 50 of about 39,621 (275)

EXISTENCE OF PERIODIC SOLUTIONS FOR QUASILINEAR ORDINARY DIFFERENTIAL EQUATIONS WITH DISCONTINUITIES

open access: yesDemonstratio Mathematica, 2000
The authors provide an existence theorem on the quasilinear differential equation \[ -(|x'(t)|^{p-2} x'(t))' = f(t,x(t)) \] a.e. on \(T=[0,b]\) with \(a \leq p < \infty\), discontinuous right-hand side \(f(t,\cdot)\) and the periodic boundary conditions \(x(0)=x(b), x'(0)=x'(b)\). The theorem is based on solving a related multivalued problem created by
Matzakos, Nikolaos   +1 more
openaire   +2 more sources

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

A Differential Algebraic Method to Approximate Nonsmooth Mechanical Systems by Ordinary Differential Equations

open access: yesJournal of Applied Mathematics, 2013
Nonsmooth mechanical systems, which are mechanical systems involving dry friction and rigid unilateral contact, are usually described as differential inclusions (DIs), that is, differential equations involving discontinuities.
Xiaogang Xiong   +2 more
doaj   +1 more source

Non-Classical Relaxation Oscillations in Neurodynamics

open access: yesМоделирование и анализ информационных систем, 2014
A modification of the well-known FitzHugh–Nagumo model from neuroscience is proposed. This model is a singularly perturbed system of ordinary differential equations with a fast variable and a slow one.
S. D. Glyzin   +2 more
doaj   +1 more source

High-order implicit palindromic discontinuous Galerkin method for kinetic-relaxation approximation [PDF]

open access: yes, 2018
We construct a high order discontinuous Galerkin method for solving general hyperbolic systems of conservation laws. The method is CFL-less, matrix-free, has the complexity of an explicit scheme and can be of arbitrary order in space and time.
Coulette, David   +4 more
core   +3 more sources

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek   +5 more
wiley   +1 more source

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi   +2 more
wiley   +1 more source

Energy-optimal electrical-stimulation pulses shaped by the Least-Action Principle. [PDF]

open access: yesPLoS ONE, 2014
Electrical stimulation (ES) devices interact with excitable neural tissue toward eliciting action potentials (AP's) by specific current patterns. Low-energy ES prevents tissue damage and loss of specificity.
Nedialko I Krouchev   +4 more
doaj   +1 more source

Higher derivative discontinuous solutions to linear ordinary differential equations: a new route to complexity? [PDF]

open access: yesChaos, Solitons & Fractals, 2004
We present a new one parameter family of second derivative discontinuous solutions to the simplest scale invariant linear ordinary differential equation. We also point out how the construction could be extended to generate families of higher derivative discontinuous solutions as well.
Datta, Dhurjati Prasad   +1 more
openaire   +2 more sources

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

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