کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4924551 | 1430847 | 2017 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of free-field transfer functions in anomalous reverberant fields
ترجمه فارسی عنوان
ارزیابی توابع انتقال آزاد در زمینه های ریشه های غیرعادی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
چکیده انگلیسی
The structural-acoustic transfer functions of complex structures are often measured in anomalous reverberant environments. Aiming to eliminating the influences of these reverberant fields on structural-acoustic transfer functions, an impulse-based synchronization average evaluation method is proposed. Structures are actuated according to an impulse signal, and the response signals are synchronized in time and averaged in space. This method does not require complex data processing, and the free-field transfer functions can be obtained based on the measurements in reverberant fields and the transfer characteristics of the structures are preserved. Moreover, in combination with the principle of reciprocity, the proposed method does not require the installation of impulse actuators in structures. The proposed method is verified numerically and validated in a deep lake experiment using a cylindrical model. The results show that the structural-acoustic transfer functions in the profundal zone can be effectively evaluated using the data collected in the shallow zone, and the error is less than 3Â dB at most frequencies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 386, 6 January 2017, Pages 163-176
Journal: Journal of Sound and Vibration - Volume 386, 6 January 2017, Pages 163-176
نویسندگان
Guo Cheng, Lin He, Rongwu Xu,