Determining the material properties for heavily over-consolidated bagasse through parameter estimation

Plaza, Floren (2013) Determining the material properties for heavily over-consolidated bagasse through parameter estimation. In Proceedings of the 28th International Society of Sugar Cane Technologists (ISSCT) Congress, The International Society of Sugar Cane Technologists / Sociedade dos Tecnicos Acucareiros e Alcoole, Brazil, pp. 1686-1693.

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Abstract

A better understanding of the behaviour of prepared cane and bagasse, and the ability to model the mechanical behaviour of bagasse as it is squeezed in a milling unit to extract juice, would help identify how to improve the current process. For example, there are opportunities to decrease bagasse moisture from a milling unit. Also, the behaviour of bagasse in chutes is poorly understood. Previous investigations have shown that juice flow through bagasse obeys Darcy’s permeability law, that the grip of the rough surface of the grooves on the bagasse can be represented by the Mohr-Coulomb failure criterion for soils, and that the internal mechanical behaviour of the bagasse is critical state behaviour similar to that for sand and clay.

Progress has been made in the last ten years towards implementing a mechanical model for bagasse in finite element software. The objective has been to be able to simulate simple mechanical loading conditions measured in the laboratory, which, when combined together, have a high probability of reproducing the complicated stress conditions in a milling unit. This paper reports on the successful simulation of part of the fifth and final (and most challenging) loading condition, the shearing of heavily over-consolidated bagasse, and determining material property values through the use of powerful and free parameter estimation software.

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ID Code: 74748
Item Type: Conference Paper
Refereed: Yes
Keywords: bagasse, mechanical behaviour, elasto-plastic material, mill modelling, heavily-overconsolidated
ISBN: 978-0-949678-27-0
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > OTHER ENGINEERING (099900) > Engineering not elsewhere classified (099999)
Divisions: Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 [please consult the author]
Deposited On: 05 Aug 2014 22:49
Last Modified: 07 Aug 2014 11:44

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