TY - GEN
T1 - Order-Tuned and impact absorbers for rotating flexible structures
AU - Shaw, Steven W.
AU - Olson, Brian J.
AU - Pierre, Christophe
PY - 2006
Y1 - 2006
N2 - This work describes analytical and simulation investigations of order-tuned and impact vibration absorbers that are used to attenuate vibrations of flexible blades in a bladed disk assembly. These absorbers exploit the centrifugal field arising from rotation so that for small amplitudes they are tuned to a given order of excitation, and they use impacts to dissipate energy at larger vibration amplitudes. Analytical results are obtained for idealized models; these show that for impact-free motion optimal reduction of blade vibrations and robustness are achieved by tuning the absorbers slightly below the excitation order. During impact operation, absorber performance is largely insensitive to the tuning order, but depends on the absorber mass and impact properties. These results offer a basic understanding of the dynamics of individual blades fitted with order-tuned and impact vibration absorbers, and serve as a first step to the investigation of more realistic models.
AB - This work describes analytical and simulation investigations of order-tuned and impact vibration absorbers that are used to attenuate vibrations of flexible blades in a bladed disk assembly. These absorbers exploit the centrifugal field arising from rotation so that for small amplitudes they are tuned to a given order of excitation, and they use impacts to dissipate energy at larger vibration amplitudes. Analytical results are obtained for idealized models; these show that for impact-free motion optimal reduction of blade vibrations and robustness are achieved by tuning the absorbers slightly below the excitation order. During impact operation, absorber performance is largely insensitive to the tuning order, but depends on the absorber mass and impact properties. These results offer a basic understanding of the dynamics of individual blades fitted with order-tuned and impact vibration absorbers, and serve as a first step to the investigation of more realistic models.
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M3 - Conference contribution
AN - SCOPUS:84866910737
SN - 9781604236774
T3 - Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
SP - 612
EP - 621
BT - Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
T2 - 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC-11
Y2 - 26 February 2006 through 2 March 2006
ER -