Results 91 to 100 of about 65,332 (306)

Generalized Eigenproblem And Nonlinear Elliptic Equations With Nonlinear Boundary Conditions

open access: yes, 2012
We are concerned with the solvability of nonlinear second-order elliptic partial differential equations with nonlinear boundary conditions. We study the generalized Steklov-Robin eigenproblem (with possibly singular weights) in which the spectral ...
Mavinga, Nsoki
core   +2 more sources

Existence results for nonlinear boundary-value problems with integral boundary conditions

open access: yesElectronic Journal of Differential Equations, 2005
In this paper, we investigate the existence of solutions for a second order nonlinear boundary-value problem with integral boundary conditions. By using suitable fixed point theorems, we study the cases when the right hand side has convex and ...
Mouffak Benchohra, Abdelkader Belarbi
doaj  

Parametrization for non-linear problems with integral boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2012
We consider the integral boundary-value problem for a certain class of non-linear system of ordinary differential equations of the form \begin{equation*} \frac{dx\left(t\right)}{dt} =f\left(t,x\left(t\right)\right), t\in \left[0,T\right],\: x\in \mathbb ...
Miklós Rontó, Kateryna Marynets
doaj   +1 more source

Open boundary conditions for nonlinear initial boundary value problems

open access: yesJournal of Computational Physics
We present a straightforward energy stable weak implementation procedure of open boundary conditions for nonlinear initial boundary value problems. It simplifies previous work and its practical implementation.
openaire   +4 more sources

From Shear to Sound: Mechanics–Acoustics Mapping of TPMS Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
Triply periodic minimal surface (TPMS) lattices are mapped across mechanical and acoustic performance, revealing that descriptors validated in compression fail under shear. First‐time comparison with trusses included. A transition from porous to resonance‐driven absorption emerges at 25% density.
Lucía Doyle   +3 more
wiley   +1 more source

A fibering method approach to a system of quasilinear equations with nonlinear boundary conditions

open access: yes, 2006
We provide an existence result for a system of quasilinear equations subject to nonlinear boundary conditions on a bounded domain by using the fibering ...
Kandilakis, Dimitrios   +1 more
core   +1 more source

Strictly convergent algorithm for an elliptic equation with nonlocal and nonlinear boundary conditions

open access: yesMathematical Modelling and Analysis, 2012
The paper describes a formally strictly convergent algorithm for solving a class of elliptic problems with nonlinear and nonlocal boundary conditions, which arise in modeling of the steady-state conductive-radiative heat transfer processes.
Karlis Birgelis, Uldis Raitums
doaj   +1 more source

Quasilinear Parabolic Systems with Nonlinear Boundary Conditions

open access: yesJournal of Differential Equations, 2000
Let \(\Omega\) be a smoothly bounded domain in \(\mathbb{R}^n\) with unit outward normal \(\eta\), and let \(M_i> 0\), \(\alpha_i\), and \(m_{ij}\) be nonnegative constants for \(i,j=1,\dots, n\). This paper is considered with the initial-boundary value problem \[ \begin{gathered} \frac {\partial u_i}{\partial t} = \nabla(u_i^{\alpha ^i}\nabla u_i ...
Wang, Shu, Wang, Mingxin, Xie, Chunhong
openaire   +2 more sources

Influence of Geometric Design on Mechanical Performance of Auxetic Metastructure

open access: yesAdvanced Engineering Materials, EarlyView.
Strategic geometric reinforcement transforms auxetic performance. This study evaluates 3D‐printed arrowhead metastructures, revealing that a modified design with local ring reinforcement suppresses premature failure to achieve superior energy absorption and structural efficiency.
Muhammad Gulzari   +3 more
wiley   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

open access: yesAdvanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi   +3 more
wiley   +1 more source

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