TY - GEN
T1 - An advanced damper model for the dynamics of dry friction damped systems
AU - Guillen, Jérôme
AU - Pierre, Christophe
AU - Lagrange, Thomas
N1 - Publisher Copyright:
© 1999 by ASME
PY - 1999
Y1 - 1999
N2 - In this work, a new, flexible friction damper model is introduced, for application to turbomachinery bladed-disk assemblies. The damper is modeled as a massless structure characterized by a stiffness matrix. It is connected to two (possibly more) structural systems at an arbitrary number of friction points where slip can occur. A new procedure is presented to calculate the force transmitted by the damper at each frictional interface. The multi-harmonic, hybrid, frequency/time method introduced previously by the authors, along with the Broyden resolution algorithm, are modified to handle this advanced damper model and to predict the steady-state periodic response of the system. The method is successfully applied to a four-degree of freedom friction damper connecting two beams at four frictional points. Several interesting features of the non-linear response are revealed, such as: situations where the damper slips at some frictional points and sticks at the other points; and complexity of the frequency response of the system, due to the existence of several modes of vibration that correspond to combinations of stick/slip motions at the various frictional interfaces.
AB - In this work, a new, flexible friction damper model is introduced, for application to turbomachinery bladed-disk assemblies. The damper is modeled as a massless structure characterized by a stiffness matrix. It is connected to two (possibly more) structural systems at an arbitrary number of friction points where slip can occur. A new procedure is presented to calculate the force transmitted by the damper at each frictional interface. The multi-harmonic, hybrid, frequency/time method introduced previously by the authors, along with the Broyden resolution algorithm, are modified to handle this advanced damper model and to predict the steady-state periodic response of the system. The method is successfully applied to a four-degree of freedom friction damper connecting two beams at four frictional points. Several interesting features of the non-linear response are revealed, such as: situations where the damper slips at some frictional points and sticks at the other points; and complexity of the frequency response of the system, due to the existence of several modes of vibration that correspond to combinations of stick/slip motions at the various frictional interfaces.
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U2 - 10.1115/DETC99-VIB-8083
DO - 10.1115/DETC99-VIB-8083
M3 - Conference contribution
AN - SCOPUS:84896869530
T3 - Proceedings of the ASME Design Engineering Technical Conference
SP - 2151
EP - 2161
BT - 17th Biennial Conference on Mechanical Vibration and Noise
T2 - ASME 1999 Design Engineering Technical Conferences, DETC 1999
Y2 - 12 September 1999 through 16 September 1999
ER -