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Measurement of bending wave power in plate like structures under general field conditions using cross-spectral density method
conference contribution
posted on 2017-12-06, 00:00 authored by Nirmal MandalNirmal Mandal, R Rahman, M LeongVibration power flow and vibration intensity in general would be described by its propagating components and the near field components. Energy is transmitted by propagating waves, and no energy is transmitted by decaying waves. Near field effects are insignificant away from boundaries and sources, where only propagating waves exist. Under general field conditions, both near field and far field are considered. Finite difference approximations are often used for most estimation techniques. Using finite difference, the structural intensity or vibration intensity could be obtained either by a direct method where the vibration intensity is directly computed from the output field signals of sensors (velocity or acceleration); or by the wave decomposition method where vibration intensity is calculated from the solution of the bending wave equation. A complete solution is not generally available for plates. In this paper, theoretical flexural wave powers in naturally orthotropic plates are formulated using a finite difference approximation in the frequency domain under general field conditions.
Funding
Category 3 - Industry and Other Research Income
History
Parent Title
Proceedings of the Inter-Noise 98.Start Page
711End Page
714Number of Pages
4Start Date
1998-01-01ISBN-10
0473054434Location
Christchurch, New ZealandPublisher
International Noise Control InstitutePlace of Publication
Christchurch, New ZealandPeer Reviewed
- No
Open Access
- No
External Author Affiliations
Centre for Railway Engineering; Conference; Institute of Noise and Vibration;Era Eligible
- No