Results 31 to 40 of about 22,368,455 (279)
A Variational Beam Model for Failure of Cellular and Truss‐Based Architected Materials
Advanced Engineering Materials, EarlyView., 2023 Herein, a versatile and efficient beam modeling framework is developed to predict the nonlinear response and failure of cellular, truss‐based, and woven architected materials. It enables the exploration of their design space and the optimization of their mechanical behavior in the nonlinear regime. A variational formulation of a beam model is presented
Konstantinos Karapiperis +3 more
wiley +1 more source
Physics-informed neural networks for Timoshenko system with Thermoelasticity [PDF]
arXivThe main focus of this paper is to analyze the behavior of a numerical solution of the Timoshenko system coupled with Thermoelasticity and incorporating second sound effects. In order to address this target, we employ the Physics-Informed Neural Networks (PINNs) framework to derive an approximate solution for the system.
Sabrine Chebbi +3 more
arxiv +3 more sources
Enriching Surface‐Accessible CO2 in the Zero‐Gap Anion‐Exchange‐Membrane‐Based CO2 Electrolyzer
Angewandte Chemie International Edition, Volume 62, Issue 3, January 16, 2023., 2023 A descriptor called the surface‐accessible CO2 concentration ([CO2]SA) is developed, which enables to indicate the transient state of the local [CO2]/[OH−] ratio and helps define the limits of CO2‐to‐CO conversion. Three general tactics are developed to enrich [CO2]SA for high current electrolysis: (1) increasing the catalyst layer thickness, (2 ...
Qiucheng Xu +6 more
wiley +1 more source
Social media in marketing research: Theoretical bases, methodological aspects, and thematic focus
Psychology &Marketing, Volume 40, Issue 1, Page 124-145, January 2023., 2023 Abstract The widespread use of social media as a marketing tool during the last decade has been responsible for attracting a significant volume of academic research, which, however, can be described as highly fragmented to yield clear directions and insights.
Fangfang Li +2 more
wiley +1 more source
Robust Global Boundary Vibration Control of Uncertain Timoshenko Beam With Exogenous Disturbances
IEEE Access, 2020 In this paper, the dynamics solution problem and the boundary control problem for the Timoshenko beam under uncertainties and exogenous disturbances are addressed.
Mohamed Ahmed Eshag +3 more
doaj +1 more source
Fractal and Fractional, 2023 This paper concerns a nonhomogeneous singular fractional order system, with two frictional damping terms. This system can be considered as a generalization of the so-called Timoshenko system.
Said Mesloub, Reem K. Alhefthi
doaj +1 more source
Investigation and elimination of nonlinear Poisson stiffening in 3d and solid shell finite elements
International Journal for Numerical Methods in Engineering, Volume 124, Issue 1, Page 235-263, 15 January 2023., 2023 Abstract We show that most geometrically nonlinear three‐dimensional shell elements and solid shell elements suffer from a previously unknown artificial stiffening effect that only appears in geometrically nonlinear problems, in particular in the presence of large bending deformations.
Tobias Willmann +2 more
wiley +1 more source
Efficient formulation of a two‐noded geometrically exact curved beam element
International Journal for Numerical Methods in Engineering, Volume 124, Issue 3, Page 570-619, 15 February 2023., 2023 Abstract The article extends the formulation of a 2D geometrically exact beam element proposed by Jirásek et al. (2021) to curved elastic beams. This formulation is based on equilibrium equations in their integrated form, combined with the kinematic relations and sectional equations that link the internal forces to sectional deformation variables.
Martin Horák +2 more
wiley +1 more source
Geometrical Nonlinearity for a Timoshenko Beam with Flexoelectricity
Nanomaterials, 2021 The Timoshenko beam model is applied to the analysis of the flexoelectric effect for a cantilever beam under large deformations. The geometric nonlinearity with von Kármán strains is considered.
Miroslav Repka +2 more
doaj +1 more source
Stability of Timoshenko systems with past history [PDF]
Journal of Mathematical Analysis and Applications, 2008 We consider vibrating systems of Timoshenko type with past history acting only in one equation. We show that the dissipation given by the history term is strong enough to produce exponential stability if and only if the equations have the same wave speeds. Otherwise the corresponding system does not decay exponentially as time goes to infinity.
Hugo D. Fernández Sare +1 more
openaire +1 more source