Northampton Electronic Collection of Theses and Research

How do biomaterials and granular materials move in a horizontal drum under varying process conditions?

Flowers, K., Kaczmarczyk, S., Lama, A., Sadehi, A. and Steele, J. (2015) How do biomaterials and granular materials move in a horizontal drum under varying process conditions? In: Gomze, L. A. (ed.) Gomze, László A 2nd International Conference on Rheology and Modeling of Materials. Book of Abstracts. Miskolc, Hungary: IGREX Engineering Service Ltd. p. 79.

Item Type: Book Section
Abstract: Granular material dynamics have been modelled extensively in moving horizontal drums for a number of industrial applications. Biomaterial dynamics in a moving drum has also been described in a number of publications (silk, wool and leather), but very rarely using computer modelling and simulation. Discrete element method (DEM) is a proven technique to accurately describe the motion of bodies in a constrained space. Other authors have described the motion of fabric in the drum using three basic models: rotating circular bundle, rigid fibre, and completely flexible fibre. The study reported in this paper considers the rotating circular bundle and the completely flexible fibre model on sensitive biomaterials. The inclusion of shear and tensile modulus through Hertz-Mindlin contact models (with bonding), helps to describe the dynamics of biomaterials, and the variation of the processing parameters gives researchers insight into the forces that can be exerted on sensitive materials before rupture. The research examines the variation of rotation speed, load-volume, density and the inclusion of water into the horizontal drum and their influence on the coefficients of friction and restitution. The research then goes on to analyse the influence the changes have on the angle of repose (of materials slipping off lifters) and the resulting changes in velocity when these process parameters are varied. It is concluded that both the rotating circular bundle and completely flexible fibre model can be used in proprietary DEM software and allow the researcher to alter processing parameters to prevent damage to sensitive materials.
Additional Information: Paper presented at 2nd International Conference on Rheology and Modeling of Materials (ic-rmm2) held in Miskolc-Lillafüred, Hungary on 05-09 October, 2015
Uncontrolled Keywords: Biomaterial, discrete element method, DEM, Hertz-Mindlin, bonding, tensile modulus, shear modulus
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction. Mechanics of materials
Creators: Flowers, Karl, Kaczmarczyk, Stefan, Lama, Anne, Sadehi, Alireza and Steele, John
Editors: Gomze, László A
Publisher: IGREX Engineering Service Ltd
Faculties, Divisions and Institutes: University Faculties, Divisions and Research Centres - OLD > Faculty of Arts, Science & Technology
Date: 5 October 2015
Date Type: Publication
Page Range: p. 79
Title of Book: 2nd International Conference on Rheology and Modeling of Materials. Book of Abstracts
Place of Publication: Miskolc, Hungary
Event Type: Conference
Number of Pages: 162
Language: English
ISBN: 9789631234633
Status: Published / Disseminated
Refereed: Yes
Related URLs:
URI: http://nectar.northampton.ac.uk/id/eprint/9118

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