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Three-dimensional discrete element modelling of three point bending tests: the effect of surface energy on the tensile strength

Loreti, Simone and Wu, Chuan-Yu (2017) Three-dimensional discrete element modelling of three point bending tests: the effect of surface energy on the tensile strength Powder Technology.

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Abstract

Understanding the dependence of the strength of agglomerates on material properties, interfacial properties and structure of the agglomerate is critical in many processes involving agglomerates. For example, in the manufacturing of pharmaceutical tablets and pellets with dry granulation, understanding the relationship between the ribbon properties and the properties of the granules is critical in controlling the granulation behaviour, and the ribbon properties (e.g. tensile strength and density distribution) is determined by the material properties of the feed powders, interfacial properties between particles and the process condition, which determine the structure of the ribbons. This study aims to investigate the effect of the surface energy and porosity on the bending strength of pharmaceutical ribbons, for which three-dimensional discrete element modelling with a cohesive particle model based upon the JKR theory was performed. Simulations were carried out using specimens of various porosities and surface energies. The dependence of the bending strength on the surface energy and the ribbon porosity was examined. It was found that there is a strong correlation between the bending strength with porosity and surface energy. In particular, the bending strength is proportional to the surface energy and is an exponential function of the porosity.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Loreti, Simonesimone.loreti@surrey.ac.ukUNSPECIFIED
Wu, Chuan-Yuc.y.wu@surrey.ac.ukUNSPECIFIED
Date : 2017
Copyright Disclaimer : © 2017 Elsevier Ltd. All rights reserved.
Depositing User : Clive Harris
Date Deposited : 08 Dec 2017 13:03
Last Modified : 08 Dec 2017 13:28
URI: http://epubs.surrey.ac.uk/id/eprint/845191

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