Why is it hard to identify the onset of chatter? A stochastic resonance perspective
Why is it hard to identify the onset of chatter? A stochastic resonance perspective
A stochastic dynamical model is presented to identify the difficulties in chatter detection during cutting processes. The theoretical implications are based on measurements related to the stochastic character of the cutting force. The stochastic model is validated in a Hardware-In-the-Loop (HIL) environment where the multiplicative component of the stochastic cutting force is varied parametrically. In case of an industrial machine tool, the stochastic resonance effect is also demonstrated quantitatively by means of high-resolution vibration measurements for various spindle speeds in full immersion milling. The proposed method predicts the noise induced peaks in the spectrum of the vibration signals, which occur already within the chatter-free parameter domains and might be misjudged as chatter.
Chatter, Stability, Stochastic resonance, Regenerative effect
329-332
Bachrathy, Daniel
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Sykora, Henrik
e89d4c51-f8bc-4258-a9cc-38f249270757
Hajdu, David
89a522be-737d-4850-a8a7-63ef479c07b3
Beri, Bence
463fba8a-3ae2-49c8-bea7-2d328cd9e154
Stepan, Gabor
cbd9fcda-4929-4c3a-9875-d9b813720fb0
9 July 2021
Bachrathy, Daniel
edbc5228-66b1-4116-a98c-cbadac3abe78
Sykora, Henrik
e89d4c51-f8bc-4258-a9cc-38f249270757
Hajdu, David
89a522be-737d-4850-a8a7-63ef479c07b3
Beri, Bence
463fba8a-3ae2-49c8-bea7-2d328cd9e154
Stepan, Gabor
cbd9fcda-4929-4c3a-9875-d9b813720fb0
Bachrathy, Daniel, Sykora, Henrik, Hajdu, David, Beri, Bence and Stepan, Gabor
(2021)
Why is it hard to identify the onset of chatter? A stochastic resonance perspective.
CIRP Annals, 70 (1), .
(doi:10.1016/j.cirp.2021.04.080).
Abstract
A stochastic dynamical model is presented to identify the difficulties in chatter detection during cutting processes. The theoretical implications are based on measurements related to the stochastic character of the cutting force. The stochastic model is validated in a Hardware-In-the-Loop (HIL) environment where the multiplicative component of the stochastic cutting force is varied parametrically. In case of an industrial machine tool, the stochastic resonance effect is also demonstrated quantitatively by means of high-resolution vibration measurements for various spindle speeds in full immersion milling. The proposed method predicts the noise induced peaks in the spectrum of the vibration signals, which occur already within the chatter-free parameter domains and might be misjudged as chatter.
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e-pub ahead of print date: 19 May 2021
Published date: 9 July 2021
Keywords:
Chatter, Stability, Stochastic resonance, Regenerative effect
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Local EPrints ID: 470632
URI: http://eprints.soton.ac.uk/id/eprint/470632
ISSN: 0007-8506
PURE UUID: 21d40bd3-ba2a-4099-8e2c-cda267086fd7
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Date deposited: 17 Oct 2022 16:31
Last modified: 16 Mar 2024 22:24
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Author:
Daniel Bachrathy
Author:
Henrik Sykora
Author:
David Hajdu
Author:
Bence Beri
Author:
Gabor Stepan
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