The experimental performance of a nonlinear dynamic vibration absorber
The experimental performance of a nonlinear dynamic vibration absorber
This paper investigates the physical behaviour and
effectiveness of a nonlinear dynamic vibration absorber
(NDVA). The nonlinear absorber considered involves a
nonlinear hardening spring which was designed and
attached to a cantilever beam excited by a shaker. The
cantilever beam can be considered at low frequencies as a
linear single degree-of-freedom system. The nonlinear
attachment is designed to behave as a hardening Duffing
oscillator. The nonlinearity of the attachment is due to the
particular geometrical configuration undergoing a large
amplitude response. The experiment investigated the
potential for vibration reduction of the system. Analytical
and numerical results are presented and compared. From
the measured results it was observed that the NDVA had a
much wider effective bandwidth compared to a linear
absorber. The frequency response curve of the NDVA has
the effect of moving the second resonant peak to a higher
frequency away from the tuned frequency so that the
device is robust to mistuning.
Hsu, Y.S.
daa82e6c-67fc-47a6-b69b-a1185a7cb707
Ferguson, N.S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Brennan, M.J.
7f39b4f4-810d-49d5-be90-1656c7b8069a
11 February 2013
Hsu, Y.S.
daa82e6c-67fc-47a6-b69b-a1185a7cb707
Ferguson, N.S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Brennan, M.J.
7f39b4f4-810d-49d5-be90-1656c7b8069a
Hsu, Y.S., Ferguson, N.S. and Brennan, M.J.
(2013)
The experimental performance of a nonlinear dynamic vibration absorber.
IMAC XXXI, Garden Grove, United States.
11 - 14 Feb 2013.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
This paper investigates the physical behaviour and
effectiveness of a nonlinear dynamic vibration absorber
(NDVA). The nonlinear absorber considered involves a
nonlinear hardening spring which was designed and
attached to a cantilever beam excited by a shaker. The
cantilever beam can be considered at low frequencies as a
linear single degree-of-freedom system. The nonlinear
attachment is designed to behave as a hardening Duffing
oscillator. The nonlinearity of the attachment is due to the
particular geometrical configuration undergoing a large
amplitude response. The experiment investigated the
potential for vibration reduction of the system. Analytical
and numerical results are presented and compared. From
the measured results it was observed that the NDVA had a
much wider effective bandwidth compared to a linear
absorber. The frequency response curve of the NDVA has
the effect of moving the second resonant peak to a higher
frequency away from the tuned frequency so that the
device is robust to mistuning.
More information
Published date: 11 February 2013
Venue - Dates:
IMAC XXXI, Garden Grove, United States, 2013-02-11 - 2013-02-14
Organisations:
Dynamics Group
Identifiers
Local EPrints ID: 352059
URI: http://eprints.soton.ac.uk/id/eprint/352059
PURE UUID: 348dbcaa-b129-49e8-b852-366e5d67e9f5
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Date deposited: 02 May 2013 12:36
Last modified: 15 Mar 2024 02:34
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Contributors
Author:
Y.S. Hsu
Author:
M.J. Brennan
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