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Structural Dynamics Analysis Using Non-Uniform Fast Fourier Transform in Frequency Domain دانلود با لینک مستقیم و پرسرعت .
مقاله با عنوان: Structural Dynamics Analysis Using Non-Uniform Fast Fourier Transform in Frequency Domain
نویسندگان: Mohammad S. Ayubirad , Mostafa A. Ayubirad , Jalal Akbari
محل انتشار: هشتمین کنگره ملی مهندسی عمران – دانشگاه صنعتی نوشیروانی بابل - 17 و 18 اردیبهشت 93
فرمت فایل: PDF و شامل 8 صفحه به انگلیسی می باشد.
چکیده:
Nonuniform seismic motion affects the seismic behavior of large structures such as long-span bridges. Three main reasons for this nonuniformity have been identified. They are local soil conditions, wave passage, and incoherency effects. Other effects, such as extended source and attenuation, are relatively small. The importance of nonuniform seismic motions, especially for sensitive and important structures, has led to the development of several methods of analysis. This paper presents a direct frequency-domain method that is based on neural network and optimization. The use of this direct frequency-domain method for solving nonuniform seismic motions is shown. Finally, the application of the proposed method to a simple multiple particle damped system under harmonic loading is presented and the validity and feasibility of the transformation algorithm in time-domain and frequency-domain are numerically verified.
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