posted on 2018-08-03, 09:26authored byS.R. De Silva
Particle systems may be characterised by a knowledge
of the dimensions of the individual particles. By using
the Feret's diameter distribution and the random
filament distribution of an iron powder the characterisation
of a system of the powder particles, constrained in a
cylindrical die, has been achieved. The Monte Carlo method
has been used to simulate the transmission of force
through the model created by this characterisation.
The results of 500 Monte Carlo simulations have been used
to produce a description of the force due to one surface
particle at various points in the system. Using this diagram
together with a knowledge of the spatial distribution of the
surface particles and the dimensions of the die it was
possible to produce: (1) curves of side wall pressure vs. depth in the die for
various loads; (2) curves of applied to transmitted pressure for various height:diameter ratios; (3) curves of friction loss at the walls vs. depth for different height:diameter ratios.
The differences between the experimentally determined values
and the values predicted on the basis of the model have been
explained in terms of the assumptions made, and suggestions made
as to how these may be eliminated.
Funding
Loughborough University.
History
School
Aeronautical, Automotive, Chemical and Materials Engineering
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/
Publication date
1972
Notes
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.