Vibration Absorbers for a Mistuned Bladed Disk

[+] Author and Article Information
Alok Sinha

Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA16802, USA

1Corresponding author.

ASME doi:10.1115/1.4039539 History: Received August 15, 2016; Revised February 27, 2018


Mistuning refers to variations in modal properties of blades due to manufacturing tolerances and material defects. This can result in the amplification of a blade vibratory amplitude. This paper deals with the design of vibration absorbers for a mistuned bladed disk. First, the basic theory is established for undamped vibration absorbers using a single mode model for each blade. Then, it is extended to include a multiple mode model of each blade and disk dynamics. The impact of mistuning on the bladed disk vibration is examined in the presence of undamped absorbers via Monte Carlo simulations. It is found that vibration absorbers can be an effective method to counter the detrimental effects of mistuning.

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