Propagating compaction bands in confined compression of snow

Journal article
(Original article)


Publication Details

Author(s): Barraclough T, Blackford J, Liebenstein S, Sandfeld S, Stratford T, Weinlaender G, Zaiser M
Journal: Nature Physics
Publication year: 2016
ISSN: 1745-2473
eISSN: 1745-2481


Abstract

Some materials are strong in response to a slowly applied deformation, yet weak when subject to rapid deformations—a materials property known as strain-rate softening. Snow exhibits such behaviour: it is comparatively strong at low deformation rates, where it is quasi-plastic, but weak at high rates, where it deforms in a quasi-brittle manner. During deformation, strain-rate-softening materials ranging from metals to micellar systems exhibit complex spatio-temporal deformation patterns, including regular or chaotic deformation-rate oscillations and travelling deformation waves. Here we report a systematic investigation of such phenomena in snow and show that snow can deform with the formation and propagation of localized deformation bands accompanied by oscillations of the driving force. We propose a model that accounts for these observations. Our findings demonstrate that in snow, strain localization can occur even in initially homogeneous samples deforming under homogeneous loads.


FAU Authors / FAU Editors

Liebenstein, Stefan
Lehrstuhl für Werkstoffsimulation
Zaiser, Michael Prof. Dr.
Lehrstuhl für Werkstoffsimulation


External institutions with authors

University of Edinburgh


How to cite

APA:
Barraclough, T., Blackford, J., Liebenstein, S., Sandfeld, S., Stratford, T., Weinlaender, G., & Zaiser, M. (2016). Propagating compaction bands in confined compression of snow. Nature Physics. https://dx.doi.org/10.1038/nphys3966

MLA:
Barraclough, Thomas, et al. "Propagating compaction bands in confined compression of snow." Nature Physics (2016).

BibTeX: 

Last updated on 2019-17-05 at 14:08