Results 21 to 30 of about 101,495 (322)

Calculation of Short-Term Creep of Concrete Using Fractional Viscoelastic Model [PDF]

open access: goldMaterials, 2023
The study of short-term creep is essential for understanding the concrete creep process and deformation under alternating stress. Researchers are concentrating on the nano- and micron-scale creep of cement pastes. In the latest RILEM creep database, short-term concrete creep data at hourly or minutely levels are still rare and scarce.
Shengqi Mei   +3 more
openalex   +3 more sources

On viscoelastic wave equation with nonlinear boundary damping and source term

open access: yesCommunications on Pure & Applied Analysis, 2010
In this paper, we consider the viscoelastic wave equation with nonlinear boundary damping and source term. This work is devoted to prove the existence of solutions and uniform decay rates of the energy without imposing any restrictive growth assumption on the damping term and weakening the usual assumptions on the relaxation function.
Tae Gab Ha
openaire   +3 more sources

Long-term viscoelasticity monitoring of enzymatic degradation of chitosan scaffolds

open access: goldFrontiers in Bioengineering and Biotechnology, 2016
Introduction. Hydrogels are extensively used for tissue engineering and regenerative medicine. Their mechanical properties determine not only their function but also cell response (i.e. proliferation and differentiation of stem cells) and their degradation kinetics is particularly important to predict scaffold resorption, new tissue formation and ...
Caroline Ceccaldi   +6 more
openalex   +2 more sources

Mathematical modeling of viscoelastic foam material for design of filtering respirators [PDF]

open access: yesE3S Web of Conferences, 2023
The work is devoted to the development of a mathematical model of the foam material of the filtering half mask. The analysis of the methods used to study the leveling of the negative effect of the compression pressure of the filtering half-mask on the ...
Tyurin Igor   +3 more
doaj   +1 more source

Response Analysis of Nonlinear Viscoelastic Energy Harvester with Bounded Noise Excitation

open access: yesMachines, 2022
Energy harvesting has become a popular topic in recent years. A number of studies have been conducted in the field of vibration energy harvesting system (VEHS).
Yuanhui Zeng   +3 more
doaj   +1 more source

Numerical simulation of single- and multi-step shear stress relaxations of isotropic magnetorheological elastomer using fractional derivative viscoelastic models

open access: yesArchives of Mechanics, 2022
The paper presents numerical simulations of single- and multi-step shear stress relaxations of isotropic magnetorheological elastomer (MRE) using fractional derivative Maxwell and Kelvin–Voigt viscoelastic models. The isotropic MRE has been fabricated by
T.H. Nam, I. Petríková, B. Marvalová
doaj   +1 more source

General decay rate for a viscoelastic wave equation with distributed delay and Balakrishnan-Taylor damping

open access: yesOpen Mathematics, 2021
A nonlinear viscoelastic wave equation with Balakrishnan-Taylor damping and distributed delay is studied. By the energy method we establish the general decay rate under suitable hypothesis.
Choucha Abdelbaki   +2 more
doaj   +1 more source

WOOD AND STEEL VISCOELASTIC DAMPERS: SHORT AND LONG-TERM PERFORMANCE [PDF]

open access: goldWorld Conference on Timber Engineering (WCTE 2023), 2023
David W. Dinehart   +2 more
openalex   +2 more sources

Long‐term ovariectomy decreases ovine compact bone viscoelasticity [PDF]

open access: yesJournal of Orthopaedic Research, 2005
AbstractChanges in bone mineral density associated with estrogen depletion in humans do not account for all of the associated change in fracture risk, and it is possible that some of this variation may lie in changes of other aspects of bone quality. The purpose of this study was to investigate changes in viscoelastic behavior of compact bone that may ...
C M, Les   +5 more
openaire   +2 more sources

Stochastic Viscoelastic Wave Equations with Nonlinear Damping and Source Terms [PDF]

open access: yesJournal of Applied Mathematics, 2014
The goal of this paper is to study an initial boundary value problem of stochastic viscoelastic wave equation with nonlinear damping and source terms. Under certain conditions on the initial data: the relaxation function, the indices of nonlinear damping, and source terms and the random force, we prove the local existence and uniqueness of solution by ...
Cheng, Shuilin   +2 more
openaire   +4 more sources

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