Results 111 to 120 of about 22,368,455 (279)
Geometry physics neural operator solver for solid mechanics
Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 10, Page 1388-1404, 18 April 2025.Abstract This study developed Geometry Physics neural Operator (GPO), a novel solver framework to approximate the partial differential equation (PDE) solutions for solid mechanics problems with irregular geometry and achieved a significant speedup in simulation time compared to numerical solvers. GPO leverages a weak form of PDEs based on the principle
Chawit Kaewnuratchadasorn +3 more
wiley +1 more source
Iterative Optimal Control for Flexible Rotor–AMB System [PDF]
Acta Montanistica Slovaca, 2010 In this paper we propose an optimal control design technique for a class of nonlinear and control non-affine equations.The dynamic equations of a flexible shaft supported by a pair of active magnetic bearings (AMBs) are used as the nonlinear control ...
G. Serdar Tombul +2 more
doaj
COVID‐19, Import Relationships and New Formation: Evidence From Colombian Importers
The World Economy, Volume 48, Issue 4, Page 725-741, April 2025.ABSTRACT This paper examines the short‐run effects of exposure to COVID‐19 cases on monthly outcomes and new formation for Colombian import relationships in 2020. Focusing first on consistent import relationships, defined as firm–origin–product triplets that were active in all 12 months of 2019, inactivity rates are 5% higher, imported value is 3 ...
Ben Hamilton
wiley +1 more source
Exponential Stability for a Nonlinear Timoshenko System with Distributed Delay
International Journal of Analysis and Applications, 2020 This paper is concerned with a nonlinear Timoshenko system modeling clamped thin elastic beams with distributed delay time. The distributed delay is defined on feedback term associated to the equation for rotation angle. Under suitable assumptions on the
Lamine Bouzettouta +3 more
doaj
Selecciones Matemáticas, 2018 We studied the uniform stabilization of a class of Timoshenko systems with partial dissipation of the beam. Our main result is to prove that the semigroup associated to this model has polynomial decay.
Frank Henry Acasiete Quispe +1 more
doaj +1 more source
Fractal and FractionalIn this study, we examine Timoshenko systems with boundary conditions featuring two types of fractional dissipations. By applying semigroup theory, we demonstrate the existence and uniqueness of solutions.
Suleman Alfalqi +3 more
doaj +1 more source
Global existence and minimal decay regularity for the Timoshenko system: The case of non-equal wave speeds [PDF]
arXiv, 2015 As a continued work of [18], we are concerned with the Timoshenko system in the case of non-equal wave speeds, which admits the dissipative structure of \textit{regularity-loss}. Firstly, with the modification of a priori estimates in [18], we construct global solutions to the Timoshenko system pertaining to data in the Besov space with the regularity $
arxiv
Quasi-stability property and attractors for a semilinear Timoshenko system
, 2016 This paper is concerned with the classical Timoshenko system for vibrations of thin rods. It has been studied by many authors and most of known results are concerned with decay rates of the energy, controllability and numerical approximations.
L. Fatori, M. A. J. Silva, V. Narciso
semanticscholar +1 more source
Nonlinear damping effects for the 2D Mindlin–Timoshenko system
Arabian Journal of MathematicsAbstractIn this article, we investigate the asymptotic behavior of the Mindlin–Timoshenko system under the influence of nonlinear dissipation affecting the rotation angle equations. Initially, we provide a concise review of the system’s solution existence.
Ahmed Bchatnia +2 more
openaire +2 more sources