Quenching chatter instability in turning process with a vibro-impact nonlinear energy sink. (27th October 2015)

• Record Type: Journal Article
• Authors: Gourc, E.; Seguy, S.; Michon, G.; Berlioz, A.; Mann, B.P.
• Is Part Of: Journal of sound and vibration. Volume 355(2015)
• Page Start: 392
• Page End: 406
• Publication Date: 2015-10-27
• Subjects: Sound -- Periodicals; Vibration -- Periodicals; Son -- Périodiques; Vibration -- Périodiques; Sound; Vibration; Periodicals; Electronic journals; 620.205
• DOI: 10.1016/j.jsv.2015.06.025
• Languages: English
• ISSNs: 0022-460X

Abstract

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 is 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.