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Development of a boring bar with magneto rheological fluid damping and assessment of its dynamic characteristics
, C. V. Biju
Published in SAGE Publications Inc.
2018
Volume: 24
   
Issue: 14
Pages: 3094 - 3106
Abstract
The boring operation is prone to chatter as the boring bar is slender and has an overhang. For chatter suppression, passive, semi-active or active control methods can be employed. In the present work, a boring bar has been specially designed to transfer vibration to a cantilever bar surrounded by magneto rheological (MR) fluid. The MR fluid when exposed to electromagnetic flux changes its rheological property within a certain range. Thus, the boring bar is able to exhibit variable damping characteristics by changing the excitation current. The modal parameters are experimentally obtained through an impact test and a shaker test. The variation of modal parameters with excitation current is discussed. A stability lobe diagram is also developed from the model parameters, showing safe and unsafe regions for operation. The semi-active boring bar developed in the present work can be used for the suppression of chatter during the boring operation. © The Author(s) 2017.
About the journal
JournalData powered by TypesetJVC/Journal of Vibration and Control
PublisherData powered by TypesetSAGE Publications Inc.
ISSN10775463
Open AccessNo
Concepts (14)
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    Damping
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    Impact testing
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    MAGNETORHEOLOGICAL FLUIDS
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    Modal analysis
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    Vibrations (mechanical)
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    ACTIVE CONTROL METHODS
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    Damping ratio
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    Dynamic characteristics
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    ELECTROMAGNETIC FLUXES
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    Magneto-rheological
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    MAGNETO-RHEOLOGICAL FLUID
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    Rheological property
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    STABILITY LOBE DIAGRAMS
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    Boring