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Passive damping concepts for tubular beams with partial rotational and translational end restraintsThe main objectives of the study are: (1) identification of potential passive damping concepts for slender tubular structural members with rotational and translational end springs under natural and forced-free vibrations; (2) evaluation of damping efficiencies of the various damping concepts; and (3) evaluation of the suitability of a theoretical finite difference analysis by comparison to the experimental results for the case of natural vibrations. Only member flexural an translation motion is considered. The natural vibration study is conducted on the seven damping concepts and for only one specific initial deflection. The most suitable of the seven dampers is further investigated under forced-free vibrations. In addition only one set of end springs is used for all of the experiments. The results show that passive damping provides a possible approach to structural vibration reduction.
Document ID
19910007098
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Razzaq, Zia (Old Dominion Univ. Norfolk, VA, United States)
Muyundo, David K. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1991
Subject Category
Structural Mechanics
Report/Patent Number
NAS 1.26:187833
NASA-CR-187833
Report Number: NAS 1.26:187833
Report Number: NASA-CR-187833
Accession Number
91N16411
Funding Number(s)
CONTRACT_GRANT: NAG1-336
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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