Results 21 to 30 of about 67,617 (297)

Viscoelastic Characterization of Parasagittal Bridging Veins and Implications for Traumatic Brain Injury: A Pilot Study

open access: yesBioengineering, 2021
Many previous studies on the mechanical properties of Parasagittal Bridging Veins (PSBVs) found that strain rate had a significant effect on some mechanical properties, but did not extensively study the viscoelastic effects, which are difficult to detect
Silvia García-Vilana   +6 more
doaj   +1 more source

Understanding the viscoelastic behavior of collagen matrices through relaxation time distribution spectrum [PDF]

open access: yes, 2013
This study aims to provide understanding of the macroscopic viscoelastic behavior of collagen matrices through studying the relaxation time distribution spectrum obtained from stress relaxation tests.
Li, Haiyue, Xu, Bin, Zhang, Yanhang
core   +1 more source

Investigation of Relaxation Time on Viscoelastic Two-Dimensional Flow Characteristics Using FreeFem++

open access: yesJournal of Mathematics, 2022
Viscoelastic fluid flow models have shown promising scope in modeling the behavior of many industrial materials such as polymeric materials, microfluidics, biological liquids, gels, plastic melts, and geomaterials.
Muhammad Sabeel Khan   +2 more
doaj   +1 more source

Gravitational viscoelastic relaxation of eccentrically nested spheres [PDF]

open access: yesGeophysical Journal International, 1999
SUMMARY We present a semi-analytical solution to the 2-D forward modelling of viscoelastic relaxation in a heterogeneous model consisting of eccentrically nested spheres. Several numerical methods for 2-D and 3-D viscoelastic relaxation modelling have been applied recently, including finite-element and spectral-finite-diVerence schemes.
Martinec, Z., Wolf, D.
openaire   +4 more sources

Mathematical Models Describing the Creep and Stress Relaxation Behavior of False Banana’s Fiber (Ensete Ventricosum)

open access: yesJournal of Natural Fibers, 2021
Viscoelastic behavior is an important parameter for the use of natural fibers in technical applications. Mathematical models to describe the relaxation and creep behavior of Ensete fibers were investigated.
Č. Mizera   +3 more
doaj   +1 more source

Complex interplay between stress perturbations and viscoelastic relaxation in a two-asperity fault model [PDF]

open access: yesNonlinear Processes in Geophysics, 2018
We consider a plane fault with two asperities embedded in a shear zone, subject to a uniform strain rate owing to tectonic loading. After an earthquake, the static stress field is relaxed by viscoelastic deformation in the asthenosphere.
E. Lorenzano, M. Dragoni
doaj   +1 more source

Theory of Reciprocating Contact for Viscoelastic Solids [PDF]

open access: yes, 2015
A theory of reciprocating contacts for linear viscoelastic materials is presented. Results are discussed for the case of a rigid sphere sinusoidally driven in sliding contact with a viscoelastic half-space.
Carbone, Giuseppe   +2 more
core   +2 more sources

Slip vs viscoelasticity in dewetting thin films [PDF]

open access: yes, 2005
Ultrathin polymer films on non-wettable substrates display dynamic features which have been attributed to either viscoelastic or slip effects. Here we show that in the weak and strong slip regime effects of viscoelastic relaxation are either absent or ...
A. Münch   +17 more
core   +2 more sources

The role of relaxation and retardation phenomenon of Oldroyd-B fluid flow through Stehfest’s and Tzou’s algorithms

open access: yesNonlinear Engineering, 2022
Delayed response (delay of the elasticity) and time needed for initial stress can lead to relaxation and retardation phenomenon; this is because of the consistent behavior of viscoelastic fluid on thermodynamic principles.
Awan Aziz Ullah   +4 more
doaj   +1 more source

Sharp Fronts Due to Diffusion and Viscoelastic Relaxation in Polymers [PDF]

open access: yes, 1991
A model for sharp fronts in glassy polymers is derived and analyzed. The major effect of a diffusing penetrant on the polymer entanglement network is taken to be the inducement of a differential viscoelastic stress.
Cohen, Donald S., White, Andrew B., Jr.
core   +1 more source

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