Quenching chatter instability in turning process with a vibro-impact nonlinear energy sink

Etienne Gourc 1 Sébastien Seguy 2 Guilhem Michon 2 Alain Berlioz 2 Brian Mann 3
1 Universidade Federal de Uberlândia - UFU
2 ICA - Institut Clément Ader
3 Department of Mechanical Engineering and Material Science
Abstract : This paper investigates the passive control of chatter instability in turning processes using a vibro-impact nonlinear energy sink (NES). The workpiece is assumed to be rigid and the tool is flexible. A dynamical model including a nonlinear cutting law is presented and the stability lobes diagram are obtained. The behavior of the system with the vibro-impact NES is investigated using an asymptotic analysis. A control mechanism by successive beating is revealed, similarly to the strongly modulated response in the case of NES with cubic stiffness. It is shown that such a response regime may be beneficial for chatter mitigation. An original experimental procedure is proposed to verify the sizing of the vibro-impact NES. An experimental setup is developed with a vibro-impact NES embedded on the lathe tool and the results are analyzed and validated
Keywords : Chatter instability nonlinear energy sink turning
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Journal articles
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Etienne Gourc, Sébastien Seguy, Guilhem Michon, Alain Berlioz, Brian Mann. Quenching chatter instability in turning process with a vibro-impact nonlinear energy sink. Journal of Sound and Vibration, Elsevier, 2015, 355, pp.392-406. ⟨10.1016/j.jsv.2015.06.025⟩. ⟨hal-01820053⟩

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