Particle rotation of granular materials in plane strain

Zhibo Chen, Mehdi Omidvar, Kaigang Li, Magued Iskander

Research output: Contribution to journalArticle

Abstract

Important aspects of collective behaviour in granular media, such as formation of force chains and shear localisation, are related to kinematics at the underlying particle scale. Particle kinematics consists of translation and rotation. While considerable effort has been dedicated to resolving the translational component of particle displacements, rotational components have received less attention that is due partly to the difficulty associated with distinguishing rotation from translation at the particle scale. In this paper, three new methods based on digital image correlation, image registration and point least-square estimation are introduced to quantify planar particle rotation. The underlying theory behind each method is described and the performance of the methods is assessed through detailed error analysis. The strengths and weaknesses of each method are discussed based on their applicability to study particle kinematics in natural sand. The methods are presented in the form of open-source codes that can be integrated with other analytical tools to investigate particle kinematics. The application of the three methods is demonstrated through the study of particle rotation in plane strain assemblies of granular media under active and passive conditions.

Original languageEnglish (US)
Pages (from-to)23-40
Number of pages18
JournalInternational Journal of Physical Modelling in Geotechnics
Volume17
Issue number1
DOIs
StatePublished - Mar 1 2017

Fingerprint

Granular materials
plane strain
Particles (particulate matter)
Kinematics
kinematics
granular medium
Image registration
Error analysis
Sand
material
particle
error analysis
digital image
method
sand

Keywords

  • Computational mechanics
  • Granular materials
  • Retaining walls

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Particle rotation of granular materials in plane strain. / Chen, Zhibo; Omidvar, Mehdi; Li, Kaigang; Iskander, Magued.

In: International Journal of Physical Modelling in Geotechnics, Vol. 17, No. 1, 01.03.2017, p. 23-40.

Research output: Contribution to journalArticle

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