Results 51 to 60 of about 22,237,137 (269)

Stabilization for the transmission problem of the Timoshenko system in thermoelasticity with two concentrated masses

Mathematical methods in the applied sciences, 2020
In this paper, our main goal is to study the stability of the thermoelastic Timoshenko beam with locally distributed temperature. Then, we consider the transmission problem of the Timoshenko system in thermoelasticity with two concentrated masses.
W. Youssef
semanticscholar   +1 more source

Visible Light Induced DLP‐Printed Oxygen‐Releasing TPMS Scaffolds Mitigate Early Hypoxia in Bone Defects

Advanced Healthcare Materials, EarlyView.
Visible light‐induced digital light processing 3D printed Primitive‐triply periodic minimal surface hydrogels embed CaO2–Si core–shell nanoparticles to deliver short‐term oxygen during the avascular window. The scaffolds maintain cytocompatibility, elevate osteopontin in vitro, and enhance calvarial defect repair in vivo without toxicity.
Anastasia B. Timoshenko, Ali Ghasemkhani, Chanul Kim, Domenic J. Cordova, Maria Astudillo Potes, Valeria Aceves, Indranath Mitra, Justin E. Bird, Ryan S. Gray, Stephanie K. Seidlits, Benjamin D. Elder, Maryam Tilton   +11 more
wiley   +1 more source

Stability of thermoelastic Timoshenko system with variable delay in the internal feedback

Electronic Research Archive
Based on the Fourier law of heat conduction, this paper was concerned with the thermoelastic Timoshenko system with memory and variable delay in the internal feedback, which describes the transverse vibration of a beam. By the Lummer-Phillips theorem and
Xinfeng Ge, Keqin Su
doaj   +1 more source

Non-Homogeneous Thermoelastic Timoshenko Systems

Bulletin of the Brazilian Mathematical Society, New Series, 2017
The well-established Timoshenko system is characterized by a particular relation between shear stress and bending moment from its constitutive equations. Accordingly, a (thermal) dissipation added on the bending moment produces exponential stability if and only if the so called “equal wave speeds” condition is satisfied.
M. S. Alves, M. A. Jorge Silva, T. F. Ma, J. E. Muñoz Rivera   +3 more
openaire   +2 more sources

Vibration of a Reissner–Mindlin–Timoshenko plate–beam system [PDF]

Mathematical and Computer Modelling, 2009
In this paper, we consider a plate-beam system in which the Reissner-Mindlin plate model is combined with the Timoshenko beam model. Natural frequencies and vibration modes for the system are calculated using the finite element method. The interface conditions at the contact between the plate and beams are discussed in some detail.
Labuschagne, A, Van Rensburg, N.J, Van der Merwe, Alna   +2 more
openaire   +2 more sources

Hygromnemics: Programmable Material Memory Matter Actuators via Wet Pre‐Constraining

Advanced Materials Technologies, EarlyView.
Humidity‐based pre‐constraining creates hygromnemics‐shape memory matter. From identical biocomposites actuation in dry and wet states is obtained via hygromnemic and hygromorphic actuation, respectively. Hygromnemic actuators present long‐ and short‐term shape memory abilities.
Charles de Kergariou, Findlay S. G. Smith, Richard S. Trask, Adam W. Perriman, Fabrizio Scarpa, David Correa   +5 more
wiley   +1 more source

Dynamic Stiffness Matrix for a Beam Element with Shear Deformation

Shock and Vibration, 1995
A method for calculating the dynamic transfer and stiffness matrices for a straight Timoshenko shear beam is presented. The method is applicable to beams with arbitrarily shaped cross sections and places no restrictions on the orientation of the element ...
Walter D. Pilkey, Levent Kitiş
doaj   +1 more source

Exponential stability for a Timoshenko-type system with history

Journal of Mathematical Analysis and Applications, 2011
AbstractIn this paper, we consider hyperbolic Timoshenko-type vibrating systems that are coupled to a heat equation modeling an expectedly dissipative effect through heat conduction. We use the semigroup method to prove the exponential stability result with assumptions on past history relaxation function g exponentially decaying for the equal wave ...
Zhiyong Ma, Lingrui Zhang, Xin-Guang Yang   +2 more
openaire   +2 more sources

Laser‐Written Ruby Emitters in MXenes: Transforming Residual Impurities Into Integrated Narrowband Luminescent Probes

Advanced Optical Materials, EarlyView.
Laser writing converts residual aluminum in MXenes into bright ruby emitters with laser‐like photoluminescence. This approach provides a universal optical tool for mapping material purity. Luminescence sensitivity to temperature, pressure and chemical environment turns synthesis liabilities into assets, enabling the formation of built‐in optical probes
Ilya A. Zavidovskiy, Alexander V. Syuy, Dmitry I. Yakubovsky, Andrey A. Vyshnevyy, Georgy A. Ermolaev, Gleb I. Tselikov, Valery G. Yakunin, Pavel V. Evdokimov, Alexey Kuznetsov, Valeriy M. Kondratev, Dmitrii S. Zimbovskii, Olesya O. Kapitanova, Mikhail S. Gurin, Vladislav V. Burdin, Fedor M. Maksimov, Vladimir G. Leiman, Dmitry S. Shtarev, Alexander I. Chernov, Victor Yu. Timoshenko, Aleksey V. Arsenin, Valentyn S. Volkov, Sergey M. Novikov, Alexey D. Bolshakov   +22 more
wiley   +1 more source

Competitive Bidirectional Response in Bi‐Polymeric Mechanochromic Cantilevers Toward Color Imaging‐Based VOC Discrimination

Advanced Optical Materials, EarlyView.
In bi‐polymeric mechanochromic cantilevers composed of polydimethylsiloxane (PDMS) and off‐stoichiometry thiol‐ene‐epoxy (OSTE+), differential swelling between the two polymers in response to VOC exposure induces a competitive bidirectional bending and corresponding color changes, with three characteristic response modes related to the Hansen ...
Ferran Pujol‐Vila, Enric Casas‐Aguilera, Mar Alvarez   +2 more
wiley   +1 more source