Results 11 to 20 of about 46,195 (284)

Bubble dynamics in polymeric foams [PDF]

open access: yes, 2004
The effects of fluid viscoelasticity on the expansion of gas bubbles in polymer foams for both non-reactive and reactive polymers are investigated. Polymer foams are used extensively in consumer products, from car parts to upholstery.
Everitt, Sally Louise
core   +6 more sources

Computational modelling of some problems of elasticity and viscoelasticity with applications to thermoforming process [PDF]

open access: yes, 2012
Copyright @ 2012 Northwestern Polytechnical University and ISCIThe reliability of computational models of physical processes has received much attention and involves issues such as the validity of the mathematical models being used, the error in any ...
Warby, MK, Whiteman, JR, Shaw, S
core   +6 more sources

An approach to nonlinear viscoelasticity via metric gradient flows [PDF]

open access: yes, 2013
We formulate quasistatic nonlinear finite-strain viscoelasticity of rate type as a gradient system. Our focus is on nonlinear dissipation functionals and distances that are related to metrics on weak diffeomorphisms and that ensure time-dependent frame ...
Mielke, A.   +4 more
core   +1 more source

Decoupling between Translational Diffusion and Viscoelasticity in Transient Networks with Controlled Network Connectivity

open access: yesGels, 2022
The mobility of sustained molecules is influenced by viscoelasticity, which is strongly correlated with the diffusional property in polymeric liquid. However, the study of transient networks formed by a reversible crosslink, which is the viscoelastic ...
Takuya Katashima   +6 more
doaj   +1 more source

Viscoelastic modeling of the stress relaxation behavior for the bionic extracellular matrix polymer scaffold

open access: yesMedicine in Novel Technology and Devices, 2022
Viscoelasticity of the extracellular matrix (ECM) plays a critical part in controlling cell behavior. However, the structure-related viscoelasticity of the synthetic ECM and its mechanism are rarely reported.
Yanqin Wang   +3 more
doaj   +1 more source

Influence of supramolecular forces on the linear viscoelasticity of gluten [PDF]

open access: yes, 2016
Stress relaxation behavior of hydrated gluten networks was investigated by means of rheometry combined with μ-computed tomography (μ-CT) imaging. Stress relaxation behavior was followed over a wide temperature range (0–70 °C).
Kontogiorgos, Vassilis   +6 more
core   +1 more source

Photoacoustic viscoelasticity imaging dedicated to mechanical characterization of biological tissues [PDF]

open access: yesJournal of Innovative Optical Health Sciences, 2017
Since changes in mechanical properties of biological tissues are often closely related to pathology, the viscoelastic properties are important physical parameters for medical diagnosis.
Yujiao Shi, Fen Yang, Qian Wang
doaj   +1 more source

Relative entropy in diffusive relaxation [PDF]

open access: yes, 2012
We establish convergence in the diffusive limit from entropy weak solutions of the equations of compressible gas dynamics with friction to the porous media equation away from vacuum.
Tzavaras, Athanasios E.   +1 more
core   +1 more source

Prediction Formula Describing Viscoelasticity of Unvulcanized Rubber Compound Based on Time-Temperature Equivalent Superposition Principle

open access: yesInternational Journal of Polymer Science, 2023
Fitting unvulcanized rubber compound’s (URC) dynamic viscoelasticity prediction formula and then constructing its mechanical constitutive model are of great significance for studying defect mechanisms in rubber products.
Yong Li   +5 more
doaj   +1 more source

Viscoelastic properties of crystals [PDF]

open access: yesThe Journal of Chemical Physics, 2009
We examine the question of whether fluids and crystals are differentiated on the basis of their zero frequency shear moduli or their limiting zero frequency shear viscosity. We show that while fluids, in contrast with crystals, do have a zero value for their shear modulus, in contradiction to a widespread presumption, a crystal does not have an ...
Williams, Stephen R., Evans, Denis J.
openaire   +4 more sources

Home - About - Disclaimer - Privacy