Shock and Vibration

Shock and Vibration / 2011 / Article
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2nd International Conference on Vibro-Impact Systems (ICoVIS), Sanya, China, 6–9 January, 2010

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Open Access

Volume 18 |Article ID 598106 |

G.A. Volkov, V.A. Bratov, A.A. Gruzdkov, V.I. Babitsky, Y.V. Petrov, V.V. Silberschmidt, "Energy-Based Analysis of Ultrasonically Assisted Turning", Shock and Vibration, vol. 18, Article ID 598106, 9 pages, 2011.

Energy-Based Analysis of Ultrasonically Assisted Turning

Received29 Jan 2010
Revised12 Aug 2010


The process of ultrasonically-assisted turning (UAT) is a superposition of vibration of a cutting tool on its standard movement in conventional turning (CT). The former technique has several advantages compared with the latter, one of the main being a significant decrease in the level of cutting forces. In this paper the effects observed in UAT are analysed employing ideas of dynamic fracture mechanics. The active stage of loading duration depends heavily on ultrasonic frequency and the cutting speed; he application of the fracture criterion based on the notion of incubation time makes it possible to calculate a dependence of this duration on its threshold amplitude. An estimation of energy, necessary to create a threshold pulse in the material, is made by solving the contact Hertz problem. The obtained time dependence of energy has a marked minimum. Thus, the existence of energy-efficient loading duration is demonstrated. This explains the decrease in the cutting force resulting from superimposed ultrasonic vibration. The obtained results are in agreement with experiments on ultrasonic assisted machining of aluminium and Inconel 718 alloy.

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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