Finite element analysis of a boring bar using an active dynamic absorber for active vibration control

Sanjiv G. Tewani, Keith E. Rouch, Bruce L. Walcott

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

Structural elements with low dynamic stiffness are prone to excessive vibrations. A boring bar which is used to make long bores, and which is characterized by large length to diameter ratios, is a typical example. During machining, a boring bar can easily get excited into excessive vibrations called machine tool chatter. In this paper, an active dynamic absorber is considered as a device to be used to actively control the vibrations of the boring bar. A piezoelectric pusher is assumed to be the active element in the dynamic absorber. The boring bar with the active dynamic absorber is modelled using finite elements. Optimal control algorithms are used to calculate the feedback parameters for closed-loop control. Harmonic and transient responses are obtained with and without the feedback control. Results show that the active dynamic absorber is effective in attenuating the level of vibrations.

Original languageEnglish
Title of host publicationSmart Structures and Materials
Pages179-188
Number of pages10
StatePublished - 1991
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
Duration: Dec 1 1991Dec 6 1991

Publication series

NameAmerican Society of Mechanical Engineers, Aerospace Division (Publication) AD
Volume24
ISSN (Print)0733-4230

Conference

ConferenceWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period12/1/9112/6/91

ASJC Scopus subject areas

  • Mechanical Engineering
  • Space and Planetary Science

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