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Investigation Concerning Dynamic Properties of an Active Boring Bar Regarding its Perfomance by Means of ”1-D” Finite Element Models
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2009 (English)Conference paper, (Refereed) Published
Abstract [en]

Active boring bars may be used for active vibration suppression during internal turning operations in metal cutting. This technique is typically based on a feedback control scheme of the boring bar vibrations measured by an attached sensor (usually accelerometer) where secondary ”anti”-vibrations are induced by means of an piezoelectric actuator embedded into a cavity located in the boring bar’s longitudinal direction below its central line. Design procedure of an active boring bar requires the selection of the characteristics of the actuator, the actuator size, the position of the actuator in the boring bar, etc. A ”3-D” finite element model of the active boring bar incorporating the piezoelectric effect was proposed previously to simplify the design process. The set of actuator positions used to decide the favorable actuator position was limited due to time-consuming transient response calculations of the ”3-D” finite element model of an active boring bar. In the present paper a larger set of ”1-D” finite element models of a boring bar (which model the position of the cavity for the actuator but do not incorporate piezoelectric effect) was used to predict dynamic properties of the active boring bar. Based on these results a small set of favorable actuator positions is selected for implementation in ”3-D” finite element models of active boring bars.

Place, publisher, year, edition, pages
Krakow, 2009.
Keyword [en]
active boring bar, finite element modeling
National Category
Signal Processing Applied Mechanics
Identifiers
URN: urn:nbn:se:bth-8019Local ID: oai:bth.se:forskinfo5578DB9EA41F3166C125760E00451F9BOAI: oai:DiVA.org:bth-8019DiVA: diva2:835703
Conference
The Sixteenth International Congress on Sound and Vibration
Available from: 2012-09-18 Created: 2009-08-10 Last updated: 2015-06-30Bibliographically approved

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Håkansson, LarsClaesson, Ingvar
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