A new phenomenological constitutive model is proposed to predict the mechanical behaviour of thermoplastics in current research. The and method determine parameters are introduced. In model, a transition function enable smooth flow stress behaviours under both small-strain large-strain conditions. validating with testing data Polyetheretherketone (PEEK) Polycarbonate (PC), it found that this ab...

The author wishes to thank the Institute of Turkish Studies, Georgetown University; and the Political Economy Research Institute, University of Massachusetts Amherst for funding this research. In addition, she is grateful to Mohan Rao and James Boyce for their insightful comments and questions. The author is particularly indebted to the Turkish Ministry of Agriculture and to Levent Yener, direc...

IntroductIon Granular cell tumor (GCT) of neurohypophysis was first reported by Boyce and Beadles in 1983.[1] In 2016 WHO classification of central nervous system (CNS) tumors, GCT of neurohypophysis was defined as a distinct diagnosis.[2] Here, we reported two cases of GCT of neurohypophysis misdiagnosed as pituitary adenoma and craniopharyngioma. One of the cases was a very rare fully describ...

Nonlinear viscoelastic response of reinforced elastomers is modeled using a three-dimensional mixed finite element method with a nonlocal pressure field. A general second-order unconditionally stable exponential integrator based on a diagonal Padé approximation is developed and the Bergström–Boyce nonlinear viscoelastic law is employed as a prototype model. An implicit finite element scheme wit...

In the late 1990s and early part of the 21st century, alcohol-based hand rubs started to gain popularity. Today, alcohol-based hand rubs are widely used for infection control in clinical practice. However, many healthcare workers complain about unacceptable skin irritation caused by alcohol-based hand rubs. In spite of the complaint, when the irritant effect of alcohol on the skin has been eval...

Abstract Most concepts to characterize crack propagation were developed for elastic materials. When applying these methods elastomers, the question is how inherent energy dissipation of material affects cracking behavior. This contribution presents a numerical analysis growth in natural rubber taking due visco-elastic behavior into account. For this purpose, experimental tests first carried out...

This article presents a very detailed study on the mechanical characterization of highly nonlinear material, immature equine zona pellucida (ZP) membrane. The ZP is modeled as visco-hyperelastic soft matter. Arruda–Boyce constitutive equation and two-term Prony series are identified most suitable models for describing hyperelastic viscous components, respectively, ZP’s response. Material proper...

1.Barsoum, J., R. Brown, M. McKee and F.M. Boyce. 1997. Efficient transduction of mammalian cells by a recombinant baculovirus having the vesicular stomatitis virus G glycoprotein. Hum. Gene Ther. 8:2011-2018. 2.Bowles, N.E., R.C. Eisensmith, R. Mohuiddin, M. Pyron and S.L.C. Woo. 1996. A simple and efficient method for the concentration and purification of recombinant retrovirus for increased ...