An adaptive perturbation scheme for the analysis of mistuned bladed disks

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2815540· OSTI ID:483760

Lin, C C ^[1]; Mignolet, M P ^[2]

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1. Ford Motor Co., Dearborn, MI (United States)
2. Arizona State Univ., Tempe, AZ (United States). Dept. of Mechanical and Aerospace Engineering

In this paper, a novel perturbation technique is introduced for the determination of the forced vibration response of mistuned bladed disks. The proposed technique is adaptive in the sense that the level of approximation can be varied at will to accommodate any specificities of the tuned system and/or of the existing mistuning. This versatility of the proposed approach not only guarantees the reliability of the computed response but also leads to an excellent compromise between accuracy and computational effort. Numerical results are presented that demonstrate both the reliability of the computed response and the computational saving obtained by relying on the suggested perturbation technique as opposed to a straightforward steady-state analysis.

• Sponsoring Organization: USDOE
• OSTI ID: 483760
• Report Number(s): CONF-950629--
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 1 Vol. 119; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
COMPUTER CALCULATIONS
MECHANICAL VIBRATIONS
RESPONSE FUNCTIONS
ROTORS
TURBINE BLADES
TURBOMACHINERY