Advanced

Localised deformation patterning in 2D granular materials revealed by digital image correlation

Hall, Stephen LU ; Wood, David Muir; Ibraim, Erdin and Viggiani, Gioacchino (2010) In Granular Matter 12(1). p.1-14
Abstract
Tests have been performed on an analogue two-dimensional granular material in a special laboratory apparatus that allows the application of general stress or strain conditions. Digital image correlation of pairs of consecutive photographs taken during the tests has enabled fields of displacement and hence strain to be determined. Thus direct observation of internal displacements and strains has been possible for a series of general strain increments with different orientations of principal strain and different imposed angles of dilation. This analysis has successfully provided clear evidence of evolving internal structures of deformation. The observed evolving structures consist of bands of localised deformation and 'cells' of low... (More)
Tests have been performed on an analogue two-dimensional granular material in a special laboratory apparatus that allows the application of general stress or strain conditions. Digital image correlation of pairs of consecutive photographs taken during the tests has enabled fields of displacement and hence strain to be determined. Thus direct observation of internal displacements and strains has been possible for a series of general strain increments with different orientations of principal strain and different imposed angles of dilation. This analysis has successfully provided clear evidence of evolving internal structures of deformation. The observed evolving structures consist of bands of localised deformation and 'cells' of low deformation between the bands. The orientations of the identified localised features and cells are seen to depend on the applied strain path. The characteristic features and dimensions of the bands have been approximately identified. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
in
Granular Matter
volume
12
issue
1
pages
1 - 14
publisher
Springer New York
external identifiers
  • scopus:76949083332
ISSN
1434-7636
DOI
10.1007/s10035-009-0155-1
language
English
LU publication?
no
id
9b1b34b9-6461-4120-a912-e6be96fbb310 (old id 2441140)
date added to LUP
2012-04-27 14:20:32
date last changed
2017-01-29 04:26:37
@article{9b1b34b9-6461-4120-a912-e6be96fbb310,
  abstract     = {Tests have been performed on an analogue two-dimensional granular material in a special laboratory apparatus that allows the application of general stress or strain conditions. Digital image correlation of pairs of consecutive photographs taken during the tests has enabled fields of displacement and hence strain to be determined. Thus direct observation of internal displacements and strains has been possible for a series of general strain increments with different orientations of principal strain and different imposed angles of dilation. This analysis has successfully provided clear evidence of evolving internal structures of deformation. The observed evolving structures consist of bands of localised deformation and 'cells' of low deformation between the bands. The orientations of the identified localised features and cells are seen to depend on the applied strain path. The characteristic features and dimensions of the bands have been approximately identified.},
  author       = {Hall, Stephen and Wood, David Muir and Ibraim, Erdin and Viggiani, Gioacchino},
  issn         = {1434-7636},
  language     = {eng},
  number       = {1},
  pages        = {1--14},
  publisher    = {Springer New York},
  series       = {Granular Matter},
  title        = {Localised deformation patterning in 2D granular materials revealed by digital image correlation},
  url          = {http://dx.doi.org/10.1007/s10035-009-0155-1},
  volume       = {12},
  year         = {2010},
}