Localization of vibrations of shrouded turbomachine rotor blading

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Strength of Materials

OSTI ID:35430

Zin`kovskii, A P; Buslenko, I N; Matveev, V V ^[1]

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1. Institute of Strength of Materials, Kiev (Ukraine)

We study the influence of the nature of the circumferential distribution of the blade frequencies on the localization of the vibrations of shrouded blade rings. It is shown that the most favorable configuration (with regard to both the level of the vibratory stresses and the scatter of the resonant amplitudes of the vibrations) for the shrouded blade rings with mistuning of the blade frequencies is the {open_quotes}sawtooth{close_quotes} arrangement of the frequencies around the circumference of the disk, while the most unfavorable configuration is the arrangement with two or three neighboring blades with the same or similar frequencies. We propose a technique for studying the localized vibrations of the subject systems, making it possible to significantly simplify the solution of the problem.

• OSTI ID: 35430
• Journal Information: Strength of Materials, Journal Name: Strength of Materials Journal Issue: 7 Vol. 26; ISSN 0039-2316; ISSN SMTLB5
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DAMPING
FREQUENCY ANALYSIS
GAS TURBINE ENGINES
MECHANICAL VIBRATIONS
OSCILLATION MODES
PERFORMANCE
RESONANCE
STRESS ANALYSIS
TUNING
TURBINE BLADES