This paper presents results from an experimental investigation of the transient response of centrifugal pendulum vibration absorbers, including a comparison with the analytical results derived in the companion paper, Part I. The focus of the study is the overshoot experienced by pendulum-type torsional vibration absorbers when a rotor running at a constant speed is suddenly subjected to an applied fluctuating torque. The experiments are carried out using a fully instrumented spin rig controlled by a servo motor that can provide user-specified engine order disturbances, including those that simulate automotive engine environments. The absorber overshoot depends on the absorber tuning relative to the excitation order, the absorber damping, the amplitude of the applied torque, and on the system nonlinearity, which is set by the absorber path and/or kinematic coupling between the rotor and the absorber. Two types of absorbers are used in the study, a simple circular path pendulum, for which the path nonlinearity is dominant, and a nearly tautochronic path pendulum with a bifilar support, for which the path and coupling nonlinearities are both small. It is found that the experimental results agree very well with the analytical predictions from the companion paper. In addition, it is confirmed that the general path pseudoenergy prediction (which depends on a single parameter) provides a useful, conservative upper bound for most practical absorber designs, provided the absorber damping is small.

References

References
1.
Monroe
,
R. J.
, and
Shaw
,
S. W.
,
2013
, “
Nonlinear Transient Dynamics of Pendulum Torsional Vibration Absorbers—Part I: Theory
,”
ASME J. Vibr. Acoust.
135
(
1
), p.
011017
.
2.
Nester
,
T.
,
Haddow
,
A. G.
, and
Shaw
,
S. W.
,
2003
, “
Experimental Investigation of a System With Multiple Nearly Identical Centrifugal Pendulum Vibration Absorbers
,”
Proceedings of the ASME 19th Biennial Conference on Mechanical Vibration and Noise
, Chicago, IL, September 2-6,
ASME
Paper No.
DETC2003/VIB-48410
, pp.
913
921
.10.1115/DETC2003/VIB-48410
3.
Haddow
,
A. G.
, and
Shaw
,
S. W.
,
2003
, “
Centrifugal Pendulum Vibration Absorbers: An Experimental and Theoretical Investigation
,”
Nonlinear Dyn.
,
34
(
3–4
), pp.
293
307
.10.1023/B:NODY.0000013509.51299.c0
4.
Vidmar
,
B. J.
,
Feeny
,
B. F.
,
Shaw
,
S. W.
,
Haddow
,
A. G.
,
Geist
,
B. K.
, and
Verhanovitz
,
N. J.
,
2012
, “
The Effects of Coulomb Friction on the Performance of Centrifugal Pendulum Vibration Absorbers
,”
Nonlinear Dyn.
,
69
(
1–2
), pp.
589
600
.10.1007/s11071-011-0289-7
5.
Shaw
,
S. W.
,
Schmitz
,
P. M.
, and
Haddow
,
A. G.
,
2006
, “
Tautochronic Vibration Absorbers for Rotating Systems
,”
J. Comput. Nonlinear Dyn.
,
1
(
1
), pp.
283
293
.10.1115/1.2338652
6.
Palmer
,
D.
,
2005
, “
Theoretical and Experimental Investigation Into the Transient Behavior of Centrifugal Pendulum Vibration Absorbers
,” M.S. thesis,
Michigan State University
,
East Lansing, MI
.
7.
Shaw
,
S. W.
,
Orlowski
,
M. B.
, and
Haddow
,
A. G.
,
2008
, “
Transient Dynamics of Centrifugal Pendulum Vibration Absorbers
,”
Proceedings of the 12th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery
,
Honolulu, HI
, February 17-22, p. 119.
8.
Nester
,
T. M.
,
Haddow
,
A. G.
,
Schmitz
,
P. M.
, and
Shaw
,
S. W.
,
2004
, “
Experimental Observations of Centrifugal Pendulum Vibration Absorbers
,”
10th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-10)
, Honolulu, HI
, March 7-11, Paper No. ISROMAC10-2004-043.
9.
Schmitz
,
P. M.
,
2003
, “
Experimental Investigation Into Epicycloidal Centrifugal Pendulum Vibration Absorbers
,” M.S. thesis, Michigan State University, East Lansing, MI.
10.
Shaw
,
S. W.
,
2007
, “
Engine Excitation Harmonics and Applications to MDS Transitions
,”
Michigan State University
, Report No. 2007H.
11.
Taylor
,
B. N.
, and
Kuyatt
,
C. E.
,
1994
, “
Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results
,”
National Institute of Standards and Technology (NIST)
Technical Note No. 1297.
12.
Shaw
,
S. W.
, and
Geist
,
B. K.
,
2010
, “
Tuning for Performance and Stability in Systems of Nearly Tautochronic Torsional Vibration Absorbers
,”
ASME J. Vibr. Acoust.
,
132
(
4
), p.
041005
.10.1115/1.4000840
You do not currently have access to this content.