System identification for boring bar chatter control

Jonathan A. Embry, Suzanne Weaver Smith, Bruce L. Walcott

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

Abstract

The boring bar is used to provide smooth, accurate cuts in materials. However, when the length to diameter (L/D) ratio of the boring bar becomes large, low-frequency vibration, or chatter, results. Initial attempts to control this unwanted vibration with an active absorber have been successful, but in some configurations problems remain. In this paper, algorithms for flexible structure identification widely used in the aerospace industry are applied to a number of boring bar setups to identify the vibration characteristics of each system. Emphasis is placed on one class of methods which included the Eigensystem Realization Algorithm (ERA), developed for identification of flexible space structures. The resulting identified characteristics are compared and contrasted. Results are also compared to finite element analysis predictions. From the current identification results, implications for chatter control are discussed, including the possibility of nonlinear modal interactions.

Original languageEnglish
Title of host publicationVibration and Control of Mechanical Systems
Pages199-207
Number of pages9
StatePublished - 1993
EventProceedings of the 14th Biennial ASME Design Technical Conference on Mechanical Vibration and Noise - Albuquerque, NM, USA
Duration: Sep 19 1993Sep 22 1993

Publication series

NameAmerican Society of Mechanical Engineers, Design Engineering Division (Publication) DE
Volume61

Conference

ConferenceProceedings of the 14th Biennial ASME Design Technical Conference on Mechanical Vibration and Noise
CityAlbuquerque, NM, USA
Period9/19/939/22/93

ASJC Scopus subject areas

  • Engineering (all)

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