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Approximate A-priori Estimation of the Response Amplification Due to Geometric and Young's Modulus Mistuning


Abstract Monte Carlo simulations are traditionally carried out for the determination of the amplification of forced vibration response of turbomachine/jet engine blades to mistuning. However, this effort can be computationally time consuming even when using the various reduced order modeling techniques. Accordingly, some investigations in the past have focused on obtaining simple approximate estimates for this amplification. In particular, two of these have proposed the use of harmonic patterns of the blade properties around the disk as an approximate alternative to the many random patterns of Monte Carlo analyses. These investigations, while quite encouraging, have relied solely on single degree of freedom per sector models of the rotor.

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Created Date 2014
Contributor Sahoo, Saurav (Author) / Mignolet, Marc Paul (Advisor) / Chattopadhyay, Aditi (Committee member) / Oswald, Jay (Committee member) / Arizona State University (Publisher)
Subject Mechanical engineering / Bladed Disks / Mistuning / Vibration Dynamics
Type Masters Thesis
Extent 66 pages
Language English
Copyright
Reuse Permissions All Rights Reserved
Note Masters Thesis Mechanical Engineering 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis