Effect of high-frequency excitation in regenerative turning of metals and brittle materials

Litak, Grzegorz; Kasperek, Rafał; Zaleski, Kazimierz

doi:10.1016/j.chaos.2007.09.090

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…The orthogonal cut is the process that drives the attention more because of its simplicity in implementation [18].The regenerative aspect induced by the surface previously machined which has a sinusoidal form (waviness on the surface) is an example. Taking into account the nonlinear interaction between the tool and its part almost always gives interesting results which go from regular (periodic or quasiperiodic) vibrations to possibilities of chaotic ones [26] or, always within the orthogonal framework of the cut, while utilizing in more the dry friction [27].…”

Section: Introductionmentioning

confidence: 99%

Dynamic characterization of machining systems

Zapciu

K'Nevez

Gérard

et al. 2011

Int J Adv Manuf Technol

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International audienceIn the working space model of machining, an experimental procedure is implemented to determine the elastic behaviour of the machining system. In this paper, a dynamic characterization and vibration analysis has long been used for the detection and identification of the machine tool condition. The natural frequencies of the lathe machining system are required (Ernault HN400 - France) according to three different situations with no cutting process are acquired. The system modal analysis is used to identify the natural frequencies. These frequencies are then compared to the ones obtained on the spindle numerical model by Finite Element Method. This work is validated by experimental tests based on measures of the lathe machine tool frequencies domain. The main objective is to identify a procedure giving the natural frequencies values for the machine tool components, in order to establish a better condition in the cutting process of the machine tool

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Section: Introductionmentioning

confidence: 99%

Dynamic characterization of machining systems

Zapciu

K'Nevez

Gérard

et al. 2011

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…In the context of the present study involving the phenomenon of disparate time scales, we note that [31] and [32] study machine tool vibration chatter control using high-frequency excitations. The general approach there differs significantly from ours, however.…”

Section: Introductionmentioning

confidence: 99%

Infinite dimensional slow modulations in a well known delayed model for cutting tool vibrations

2010

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We apply the method of multiple scales (MMS) to a well-known model of regenerative cutting vibrations in the large delay regime. By "large" we mean the delay is much larger than the timescale of typical cutting tool oscillations. The MMS up to second order, recently developed for such systems, is applied here to study tool dynamics in the large delay regime. The second order analysis is found to be much more accurate than the first order analysis. Numerical integration of the MMS slow flow is much faster than for the original equation, yet shows excellent accuracy in that plotted solutions of moderate amplitudes are visually near-indistinguishable. The advantages of K. Nandakumar ( ) · A. Chatterjee

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Response of a magneto‐rheological fluid damper subjected to periodic forcing in a high frequency limit

Litak¹,

Borowiec²,

Kasperek³

2008

Z Angew Math Mech

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We explored vibrations of a single-degree of freedom oscillator with a magnetorheological damper subjected to kinematic excitations. Using fast and slow scales decoupling procedure we derived an effective damping coefficient in the limit of high frequency excitation. Damping characteristics, as functions of velocity, change considerably especially by terminating the singular non-smoothness points. This effect was more transparent for a larger control parameter which was defined as the product of the excitation amplitude and its frequency.

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Effect of high-frequency excitation in regenerative turning of metals and brittle materials

Cited by 5 publications

References 23 publications

Dynamic characterization of machining systems

Dynamic characterization of machining systems

Infinite dimensional slow modulations in a well known delayed model for cutting tool vibrations

Response of a magneto‐rheological fluid damper subjected to periodic forcing in a high frequency limit

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