# Ellis Barnwell

Room 2.245

Alan Turing Building

The University of Manchester

Oxford Road

Manchester

M13 9PL

Email: Ellis.Barnwell@manchester.ac.uk

Tel: +44(0)161 275 5817

I am a Postdoctoral Research Assistant in Applied Mathematics in the School of Mathematics at the University of Manchester. I am working with William Parnell and David Abrahams at the University of Manchester, in collaboration with Thales UK. My work focuses on wave propagation in periodic structures and the effect of nonlinear prestress on the band structure.

## Research Interests

- Non-linear elasticity
- Wave mechanics
- Meta-materials
- Periodic structures
- Stop-bands

## Publications

- Barnwell E.G., Parnell W.J., Abrahams I.D. 2015.
*Tuning band gaps for antiplane elastic waves in periodic materials using nonlinear pre-stress*. In preparation for submission to*Wave motion*. - Barnwell E.G., Abrahams I.D., Parnell W.J. 2015.
*The transient excitation of waves on a string carrying an infinite array of point masses*. In preparation. - Barnwell E.G, 2015.
*One and two-dimensional propagation of waves in periodic heterogeneous media: transient effects and band-gap tuning.*PhD thesis, University of Manchester.

## Conference Talks

**Time evolution of a periodic beaded string**

- GDRE conference - June 2014 - Gregynog, Wales

**Tunable elastodynamic band gaps**

- Waves in acoustics, elasticity and structured media workshop - June 2014 - Imperial College London
- British applied maths colloquium - April 2014 - Cardiff University

**The reflection of pulses from periodic heterogeneous media**

- Waves conference - June 2013 - Hotel El Mouradi, Tunisia
- British applied maths colloquium - April 2013 - Leeds University

**Transient problems in periodic composites**

- GDRE conference - May 2012 - Ile d'Oleron, France
- British applied maths colloquium - March 2012 - UCL, London

School of Mathematics - University of Manchester, Oxford Road, Manchester M13 9PL. Tel: +44 (0) 161 275 5800 - Email: enquiries@maths.manchester.ac.uk This page last changed: Wednesday, 11 March 2015.