...Kenneth C. Hall; Steven R. Hall This article presents a maximum likelihood approach to identifying the mistuning, aerodynamic forcing functions, and aerodynamic influence coefficients of compressor rotor blades from noisy experimental measurements of blade deflection. The maximum likelihood...

... of NSV, but prevention measures are still lacking. This article addresses this by systematically studying the influence of aerodynamic and structural mistuning on NSV. This is achieved by incorporating mistuning effects in a validated linear model, in which individual blade modes are modeled as single...

... of ± 2.5% with a zero mean normal distribution for each element of the mode shape vectors in order to represent measurement noise. The identification results obtained for both cases together with the calculated MAC values are presented in Fig. 5 . As clearly seen, NetID is able to identify the mistuning...

... to blade mistuning, which can be characterized by the higher percentage of blades on the total blisk strain energy. 29 01 2007 15 08 2008 02 04 2009 aerospace engines blades discs (structures) fatigue rotors vibrations blisk mistuning mode localization blade vibration...

...Alejandro J. Rivas-Guerra, Assoc. Mem. ASME; Marc P. Mignolet, Fellow ASME This paper focuses on the determination and study of the maximum amplification of the steady state forced response of bladed disks due to mistuning. First, an optimization strategy is proposed in which partially mistuned...

... in a certain manner, causing localization of the mode and strong response in a particular blade. In addition, it is shown that the response of an intentionally mistuned system with maximum response does not change significantly when small random mistuning is added to the system. A method is described...

...D. M. Feiner; J. H. Griffin A new reduced order model of mistuned bladed disk vibration is presented. This new approach is shown to accurately represent the response of real turbine geometries when only a single family of modes is excited. Yet its mathematical form is even simpler than...