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


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 includes 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 publication14th Biennial Conference on Mechanical Vibration and Noise
Subtitle of host publicationVibration and Control of Mechanical Systems
Number of pages9
ISBN (Electronic)9780791811771
StatePublished - 1993
EventASME 1993 Design Technical Conferences, DETC 1993 - Albuquerque, United States
Duration: Sep 19 1993Sep 22 1993

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
VolumePart F167972-9


ConferenceASME 1993 Design Technical Conferences, DETC 1993
Country/TerritoryUnited States

Bibliographical note

Funding Information:
The authors of this paper gratefully acknowledge the support of the National Science Foundation through grant MSS-9257633.

Publisher Copyright:
© 1993 American Society of Mechanical Engineers (ASME). All rights reserved.

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation


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