Results 11 to 20 of about 5,593,944 (238)

Mathematical Modelling of Different Types of Body Support Surface for Pressure Ulcer Prevention [PDF]

open access: yes, 2014
Pressure ulcer is a common problem for today’s healthcare industry. It occurs due to external load applied to the skin. Also when the subject is immobile for a longer period of time and there is continuous load applied to a particular area of human body,
Cole, Jonathan   +7 more
core   +10 more sources

The viscoelastic properties of some dental soft lining materials. [PDF]

open access: yes, 1997
PhDThe viscoelastic properties of soft lining materials are of enormous interest and importance as they clearly govern the biomechanical function of these materials.
Saber-Sheikh, Kambiz, Saber-Sheikh, K.
core   +4 more sources

Investigating the stability of viscoelastic stagnation flows in T-shaped microchannels [PDF]

open access: yes, 2009
We investigate the stability of steady planar stagnation flows of a dilute polyethylene oxide (PEO) solution using T-shaped microchannels. The precise flow rate control and well-defined geometries achievable with microfluidic fabrication technologies ...
Sousa, P.C.   +19 more
core   +4 more sources

Nonlinearly Viscoelastic Response of Glassy Polymers [PDF]

open access: yes, 2002
This thesis consists of three chapters. After a brief introduction on the general aspects of polymer characterization and viscoelasticity in the first chapter, all major features of this research project are described in the following two chapters ...
Zhu, Weidong
core   +1 more source

Mechanics of Viscoelastic Thin-Walled Structures [PDF]

open access: yes, 2013
Thin-walled structures made of polymers and reinforced polymer composites are prominent candidates for constructing large lightweight structures. A major challenge in designing polymer-based thin-walled structures is their time and temperature dependent ...
Kwok, Kawai
core   +1 more source

Computational study on temperature-dependencies of relaxation and elastic properties in anisotropic viscoelastic constitutive law for fiber-reinforced thermoplastic resin

open access: yesNihon Kikai Gakkai ronbunshu, 2019
With use of the numerical material testing (NMT) approach based on homogenization theory, a time-temperature reduction law is proposed for both relaxation and elastic properties in the orthotropic viscoelastic constitutive equation, which is supposed to ...
Koji YAMAMOTO   +4 more
doaj   +1 more source

Proposal and numerical feasibility study of a novel multi-modal and multi-axis dynamic vibration absorber consists of spherical viscoelastic material containing embedded ball-like mass

open access: yesMechanical Engineering Journal, 2021
This paper proposes a novel DVA (Dynamic Vibration Absorber) consisting of a ball-like mass embedded in a spherical viscoelastic material to meet practical demands for the multi-modal and multi-axis vibration reduction against elastic vibrations of ...
Takahiro TOMIOKA, Keiya HIGUCHI
doaj   +1 more source

Effect of the contraction ratio upon viscoelastic fluid flow in three-dimensional square-square contractions [PDF]

open access: yes, 2011
In this work we investigate the laminar flow through square–square sudden contractions with various contraction ratios (CR¼2.4, 4,8and12), using a Newtonian fluid and a shear-thinning viscoelastic fluid.
Sousa, P.C.   +3 more
core   +4 more sources

Vibration Suppression Through Variable Stiffness and Damping Structural Joints

open access: yesFrontiers in Built Environment, 2020
This paper introduces a new semi-active strategy for vibration control of truss and frame structures equipped with variable stiffness and damping joints which consist of a shape memory polymer (SMP) core reinforced by an SMP-aramid composite skin.
Qinyu Wang   +4 more
doaj   +1 more source

Development of residual stresses in cast products made of epoxy resin [PDF]

open access: yesComputer Methods in Materials Science, 2011
Epoxy resins filled with dielectric mineral particles are frequently used as insulating materials in power industry applications. Due to their excellent dielectric properties and relatively good thermal performance (resistance, ageing and conductivity ...
Tomasz Nowak
doaj   +1 more source

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