THE CRITICAL DAMPING CALCULATOR AND THE EVALUATION OF MEASURING SYSTEMS TO DETERMINE DAMPING PROPERTIES OF STRUCTURES.

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Abstract:

An analysis of existing experimental methods for measuring damping properties of structures revealed measurement limitations not previously reported. A new experimental approach, the critical damping calculator developed by MEL, is compared with previously used measurement systems and with theoretical results. Deficiencies in all the reported methods free decay and the various impedance methods are discussed, and a range of accuracy is determined and tabulated. The critical damping calculator was found to give relatively accurate results over a broad measurement range where a combination of the other measurement systems would be necessary to obtain the same accuracy. Author

Author(s):
Douglas, B. ; Longley, C.
Author Organization(s):
NAVY MARINE ENGINEERING LAB ANNAPOLIS MD
Descriptive Note:
Research and development rept.,
Annotation:
Critical damping calculator and the evaluation of measuring systems to determine damping properties of structures.
Pagination:
0021

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
MEL-98/66
Task Number(s):
01358
Project Number(s):
S-F013-11-08
 Subject Terms
Modernization Areas:
Microelectronics
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*DAMPING, MEASUREMENT), (*STRUCTURES, VIBRATION), NOMOGRAPHS, MARINE ENGINEERING
Field(s)/Group(s):
Marine Engineering
Report Date:
1966 Mar 01