Active Vibration Control of Multibody Rolling Contact System

Järvenpää, Veli-Matti; Yuan, Lihong

doi:10.1007/978-1-4020-9438-5_16

Motion and Vibration Control

DOI: 10.1007/978-1-4020-9438-5_16

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Active Vibration Control of Multibody Rolling Contact System

Veli-Matti Järvenpää

Lihong Yuan

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“…Järvenpää and Yuan have extended the study of polymer cover induced roll vibrations by new approaches which include the use of multibody dynamics and finite element method [7], and a contact mechanical model [8]. They have also performed simulations in which an active damping apparatus has been applied to various parts of a nipped roll system to eliminate harmful vibrations [9]. Hermanski has studied the pattern-formation-related vibrations of a paper calender by time domain simulations [10].…”

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Polymer cover induced self-excited vibrations of nipped rolls

Karttunen

Hertzen

2011

Journal of Sound and Vibration

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As a result of increased speeds, the dynamic instability of rotatory machines including polymer-covered nipped rolls has grown. The instability originates from the viscoelastic behavior of the covers and leads to strong barring vibrations, which limit the operating speed of many machines. In this work, the self-excited vibrations of a nipped two-roll system with a polymer cover on the other roll are investigated using an analytical model developed for the roll system. The viscoelastic properties of the cover are accounted for by the Standard Linear Solid model (SLS). The numerical results display wave-like roll cover deformation patterns, separate instability regions of the system and moving wave patterns near the resonances. The roll system is unstable when the excitation frequency of the polygonal cover deformation lies in the vicinity of the higher eigenfrequency of the system. By using a speed-up ramp, it is shown that at high speeds the instability regions may become too wide and unstable to be crossed in industrial machines. An experiment was carried out, and a good agreement is found between the numerical and experimental results.

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confidence: 99%

Polymer cover induced self-excited vibrations of nipped rolls

Karttunen

Hertzen

2011

Journal of Sound and Vibration

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Active Vibration Control of Multibody Rolling Contact System

Cited by 1 publication

References 4 publications

Polymer cover induced self-excited vibrations of nipped rolls

Polymer cover induced self-excited vibrations of nipped rolls

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