McCulloch, E., McBeath, A. and Lucas, M.L. (2006) Finite element model for ultrasonic cutting of toffee. In: Keogh, P. (ed.) Modern Practice in Stress and Vibration Analysis VI: Proceedings of the 6th International Conference on Modern Practice in Stress and Vibration Analysis: University of Bath, UK, 5-7 September, 2006. Series: Applied Mechanics and Materials, 6 (5-6). TransTech Publications: Uetikon-Zuerich, Switzerland, pp. 519-526. ISBN 9780878494187
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Abstract
The performance of an ultrasonic cutting device critically relies on the interaction of the cutting tool and the material to be cut. A finite element (FE) model of ultrasonic cutting is developed to enable the design of the cutting blade to be influenced by the requirements of the toolmaterial interaction and to allow cutting parameters to be estimated as an integral part of designing the cutting blade. In this paper, an application in food processing is considered and FE models of cutting are demonstrated for toffee; a food product which is typically sticky, highly temperature dependent, and difficult to cut. Two different 2D coupled thermal stress FE models are considered, to simulate ultrasonic cutting. The first model utilises the debond option in ABAQUS standard and the second uses the element erosion model in ABAQUS explicit. Both models represent a single blade ultrasonic cutting device tuned to a longitudinal mode of vibration cutting a specimen of toffee. The model allows blade tip geometry, ultrasonic amplitude, cutting speed, frequency and cutting force to be adjusted, in particular to assess the effects of different cutting blade profiles. The validity of the model is highly dependent on the accuracy of the material data input and on the accuracy of the friction and temperature boundary condition at the blade-material interface. Uniaxial tensile tests are conducted on specimens of toffee for a range of temperatures. This provides temperature dependent stress-strain data, which characterises the material behaviour, to be included in the FE models.
| Item Type: | Book Sections |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lucas, Professor Margaret |
| Authors: | McCulloch, E., McBeath, A., and Lucas, M.L. |
| Subjects: | T Technology > T Technology (General) |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Publisher: | TransTech Publications |
| ISBN: | 9780878494187 |
| Related URLs: |
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