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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/6476

Title: Granular dynamics of a vibrated bed of dumbbells
Authors: Wildman, Ricky D.
Beecham, J.
Freeman, T.L.
Issue Date: 2009
Publisher: © Springer Verlag
Citation: WILDMAN, R.D., BEECHAM, J. and FREEMAN, T.L., 2009. Granular dynamics of a vibrated bed of dumbbells. European Physical Journal Special Topics, 179(1), pp. 5-17
Abstract: A two-dimensional vibrated bed of dumbbells was investigated using experiment and numerical simulation. Experimentally, high speed photography in combination with image analysis and tracking software was used to determine the location of the centre of mass and the locations and direction of motion of the component particles of the dumbbells. Numerically, a geometry analogous to that used experimentally was employed and the equations of motion for each of the particles were solved using the distinct element method. It was found that, despite some differences, the numerical simulations agreed reasonably well with the experimental results. Subsequently, the simulation method was used to explore the behaviour of the bed over a range of densities. The moments of the velocity distributions were determined as a function of height for a range of numbers of particles, and it was found that a normal distribution of velocities is a good approximation, except close to the vibrating base where there were suggestions that the distribution of the vertical component of the velocities is a composite of two sets of particles, one pre-collision with the base, and the other post-collision.
Description: This journal was published in European Physical Journal Special Topics [© Springer Verlag] and the original publication is available at www.springerlink.com.
Version: Accepted for publication
DOI: 10.1140/epjst/e2010-01189-y
URI: https://dspace.lboro.ac.uk/2134/6476
ISSN: 1951-6355
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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