Improvement of Chatter Stability in Boring Operations with Passive Vibration Absorbers Articles uri icon

publication date

  • octubre 2010

start page

  • 1376

end page

  • 1384

issue

  • 10

volume

  • 52

international standard serial number (ISSN)

  • 0020-7403

electronic international standard serial number (EISSN)

  • 1879-2162

abstract

  • This paper is focused on the behavior of boring bars with a passive dynamic vibration absorber (DVA) for chatter suppression. The boring bar was modeled as a cantilever Euler&-Bernoulli beam and only its first
    mode of vibration was considered. The stability of the
    two-degree-of-freedom model was analyzed constructing the stability
    diagram, dependent on the bar characteristics and on the absorber
    parameters (mass, stiffness, damping, and position). Two analytical
    approaches for tuning the absorber parameters were compared. The
    selection criterion consisted on the maximization of the minimum values
    of the stability-lobes diagram. Subsequent analysis performed in this
    work, allowed formulating of new analytical expressions for the tuning
    frequency improving the behavior of the system against chatter.