Search Results for author: William J. Parnell

Found 5 papers, 4 papers with code

On the thermodynamic consistency of Quasi-Linear Viscoelastic models for soft solids

no code implementations3 Dec 2020 Harold Berjamin, Michel Destrade, William J. Parnell

Originating in the field of biomechanics, Fung's model of quasi-linear viscoelasticity (QLV) is one of the most popular constitutive theories employed to compute the time-dependent relationship between stress and deformation in soft solids.

Soft Condensed Matter 74D10

A Proof that Multiple Waves Propagate in Ensemble-Averaged Particulate Materials

2 code implementations16 May 2019 Artur Lewis Gower, Ian David Abrahams, William J. Parnell

To characterise wave propagation through an inhomogeneous material, the most crucial parameter is the effective wavenumber.

Classical Physics Statistical Mechanics 74J20, 45B05, 45E10, 82D30, 82D15, 78A48, 74A40

Multiple Waves Propagate in Random Particulate Materials

2 code implementations25 Oct 2018 Artur Lewis Gower, William J. Parnell, Ian David Abrahams

In these cases a single effective wavenumber does not accurately describe wave propagation even far away from boundaries.

Classical Physics Computational Physics 74J20, 45B05, 82D30, 78A48, 74A40

Characterising particulate random media from near-surface backscattering: a machine learning approach to predict particle size and concentration

2 code implementations13 Jan 2018 Artur L. Gower, Robert M. Gower, Jonathan Deakin, William J. Parnell, I. David Abrahams

Across the concentration range from 1% to 20% we find that the mean backscattered wave field is sufficient to accurately determine the concentration of particles.

Computational Physics Classical Physics 78-02, 82D02 J.2

Reflection from a multi-species material and its transmitted effective wavenumber

5 code implementations14 Dec 2017 Artur L. Gower, Michael J. A. Smith, William J. Parnell, Ian David Abrahams

We show that the multi-species effective wavenumber is not a straightforward extension of expressions for a single species.

Classical Physics Applied Physics 78-02, 82D02

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