NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Vibration transmission through periodic structures using a mobility power flow approachThe transmission of vibrational power (time averaged) through multiple coupled (periodic) structures is examined. The analysis is performed in the frequency domain and the coupling between the sub-elements of the periodic structure is expressed in terms of structural mobility functions for the junction points and between the junction points of the sub-elements. Equal length spans between stiffeners or supports of the periodic structure are considered. Through the use of the mobility power flow approach, the influence of sub-element and junction parameters, including damping at the joints, can be investigated. The results from the analysis can be in the form of either structural intensity or alternatively structural power content for each of the sub-elements. The examples discussed are for a thin, perfectly periodic beam with a finite number of spans with different types of stiffeners and/or supports between the spans. The excitation of the structure is by a point load located midway along the first span.
Document ID
19910033368
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Cuschieri, J. M.
(Florida Atlantic University Boca Raton, United States)
Date Acquired
August 15, 2013
Publication Date
November 22, 1990
Publication Information
Publication: Journal of Sound and Vibration
Volume: 143
ISSN: 0022-460X
Subject Category
Acoustics
Accession Number
91A17991
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available