کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
291991 509792 2006 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct observations of non-stationary bridge deck aeroelastic vibration in wind tunnel
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Direct observations of non-stationary bridge deck aeroelastic vibration in wind tunnel
چکیده انگلیسی

It is useful to study the ambient non-stationary response of a cable-supported bridge to monitor the “aeroelastic status” of the structure. In the absence of effective non-stationary analyzing tools, it is suitable to have signal processing techniques to pre-examine the measured ambient responses for the time scale at which the aeroelastic system varies to know if the recording can be treated as a quasi-stationary process or must be treated as non-stationary one. Among the factors contributing to the non-stationarity, the effect of signature turbulence is studied in this paper by joint time–frequency analysis on wind tunnel experiments with a partially streamlined box girder sectional model. Hilbert transform combined with empirical mode decomposition method is used. Instantaneous frequency domain properties of the aeroelastic vibration are obtained. Time-dependant features of the interactive system are partially revealed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 291, Issues 1–2, 21 March 2006, Pages 202–214
نویسندگان
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