کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
565753 875821 2007 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vibration analysis of periodically time-varying rotor system with transverse crack
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Vibration analysis of periodically time-varying rotor system with transverse crack
چکیده انگلیسی

This paper proposes the vibration analysis for the periodically time-varying rotor system with transverse crack based on the complex modal analysis by introducing the modulated coordinates. From the feasibility of the crack modeling by harmonically varying stiffness, for which the dynamic behaviors of breathing crack depending on two modeling structures are investigated, the vibration analysis associated with modal characteristics, whirling, instability, directional frequency response functions (dFRFs) and directional spectrum (dS) is carried out. Using the feature of the reverse dFRFs strongly representing the effect of the crack and the interpretation of the dS patterns, the effective method to identify the modes due to the presence or propagation of a transverse crack is suggested.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 21, Issue 7, October 2007, Pages 2857–2879
نویسندگان
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