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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 06.12.2017, 00:00 authored by Nirmal MandalNirmal Mandal, R Rahman, M Leong
Vibration 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

711

End Page

714

Number of Pages

4

Start Date

01/01/1998

ISBN-10

0473054434

Location

Christchurch, New Zealand

Publisher

International Noise Control Institute

Place of Publication

Christchurch, New Zealand

Peer Reviewed

No

Open Access

No

External Author Affiliations

Centre for Railway Engineering; Conference; Institute of Noise and Vibration;

Era Eligible

No

Name of Conference

Inter-noise 98. Conference

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