TY - GEN
T1 - A compact, generalized component mode mistuning representation for modeling bladed disk vibration
AU - Lim, Sang Ho
AU - Bladh, Ronnie
AU - Castanier, Matthew P.
AU - Pierre, Christophe
PY - 2003
Y1 - 2003
N2 - The forced response of a mistuned bladed disk can be significantly amplified compared to that of a tuned bladed disk. Various reduced-order models have been studied to predict the response of mistuned bladed disks. Most of these models have been tested only for simple mistuning cases that may not be realistic for actual systems. In this paper, a new approach to generate a general reduced-order model for a mistuned system is presented. From this general formulation, a compact reduced-order model for small blade mistuning is also derived in which mistuning is projected to tuned-system normal modes using modal participation factors of cantilevered-blade component modes. The presented mistuning projection method can estimate the effects of complicated mistuning easily from measurable modal mistuning values of mistuned blades.
AB - The forced response of a mistuned bladed disk can be significantly amplified compared to that of a tuned bladed disk. Various reduced-order models have been studied to predict the response of mistuned bladed disks. Most of these models have been tested only for simple mistuning cases that may not be realistic for actual systems. In this paper, a new approach to generate a general reduced-order model for a mistuned system is presented. From this general formulation, a compact reduced-order model for small blade mistuning is also derived in which mistuning is projected to tuned-system normal modes using modal participation factors of cantilevered-blade component modes. The presented mistuning projection method can estimate the effects of complicated mistuning easily from measurable modal mistuning values of mistuned blades.
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U2 - 10.2514/6.2003-1545
DO - 10.2514/6.2003-1545
M3 - Conference contribution
AN - SCOPUS:85087191050
SN - 9781624101007
T3 - 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
BT - 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
T2 - 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 2003
Y2 - 7 April 2003 through 10 April 2003
ER -