Journal
JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME
Volume 126, Issue 1, Pages 150-158Publisher
ASME
DOI: 10.1115/1.1643913
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This paper is the first in a two-part study of identifying mistuning in bladed disks. It develops a new method of mistuning identification based on measurements of the vibratory, response of the system as a whole. As a system-based method, this approach is particularly suited to integrally bladed rotors, whose blades cannot be removed for individual measurements. The method is based on a recently developed reduced order model of mistuning called the fundamental mistuning model (FMM) and is applicable to isolated families of modes. Two versions of FMM system identification are presented: a basic version that requires some prior knowledge of the system's properties, and a somewhat more complex version that determines the mistuning completely from experimental data.
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