We studied the stability of a confined rod under axial vibrations through a combination of analytical and numerical analysis. We find that the stability of the system is significantly different than in the static case and that both the frequency and magnitude of the applied vibrational force play an important role. In particular, while larger vibrational forces always tend to destabilize the system, our analysis indicates that the effect of the frequency is not obvious and monotonic. For certain frequencies, a very small force is sufficient to trigger an instability, while for others the rod is stable even for large forces. Furthermore, we find that the stability of the confined rod is significantly enhanced by the presence of frictional contact and that in this case also the magnitude of the perturbation affects its response.
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January 2016
Research-Article
The Instability Mechanism of a Confined Rod Under Axial Vibrations
Jia Liu,
Jia Liu
John A. Paulson School of Engineering and
Applied Sciences,
Harvard University,
Cambridge, MA 02138
Applied Sciences,
Harvard University,
Cambridge, MA 02138
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Tianxiang Su,
Tianxiang Su
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
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Nathan Wicks,
Nathan Wicks
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
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Jahir Pabon,
Jahir Pabon
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
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Katia Bertoldi
Katia Bertoldi
John A. Paulson School of Engineering and
Applied Sciences,
Harvard University,
Cambridge, MA 02138;
Kavli Institute,
Harvard University,
Cambridge, MA 02138
Applied Sciences,
Harvard University,
Cambridge, MA 02138;
Kavli Institute,
Harvard University,
Cambridge, MA 02138
Search for other works by this author on:
Jia Liu
John A. Paulson School of Engineering and
Applied Sciences,
Harvard University,
Cambridge, MA 02138
Applied Sciences,
Harvard University,
Cambridge, MA 02138
Tianxiang Su
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
Nathan Wicks
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
Jahir Pabon
Schlumberger-Doll Research,
One Hampshire Street, MD-B353,
Cambridge, MA 02139
One Hampshire Street, MD-B353,
Cambridge, MA 02139
Katia Bertoldi
John A. Paulson School of Engineering and
Applied Sciences,
Harvard University,
Cambridge, MA 02138;
Kavli Institute,
Harvard University,
Cambridge, MA 02138
Applied Sciences,
Harvard University,
Cambridge, MA 02138;
Kavli Institute,
Harvard University,
Cambridge, MA 02138
Manuscript received September 4, 2015; final manuscript received September 29, 2015; published online October 20, 2015. Editor: Yonggang Huang.
J. Appl. Mech. Jan 2016, 83(1): 011005 (10 pages)
Published Online: October 20, 2015
Article history
Received:
September 4, 2015
Revised:
September 29, 2015
Citation
Liu, J., Su, T., Wicks, N., Pabon, J., and Bertoldi, K. (October 20, 2015). "The Instability Mechanism of a Confined Rod Under Axial Vibrations." ASME. J. Appl. Mech. January 2016; 83(1): 011005. https://doi.org/10.1115/1.4031710
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