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Testing and application of a viscous passive damper for use in precision truss structuresA passive damping device intended to replace individual struts in precision truss structures for space applications is described. The theory of operation of the D-Strut device is detailed, and simple five- and three-parameter models are derived. Results from tests conducted to characterize the D-Strut at submicron displacement levels are reporeted. The incorporation of a strut in a precision truss testbed is described. Parameters determined from the component-level tests are used in a finite element model of the truss, and damping augmentation is predicted. Using the simple three-parameter model, a damper is selected for multiple placement in a separate optical interferometer truss testbed. The effect of the addition of the damper struts is illustrated analytically in a model of the structure. Finally, an improved Arched Flexure D-Strut that is expected to provide higher loss factors, and is currently under development, is described.
Document ID
19910047485
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Trubert, M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Fanson, J.
(JPL Pasadena, CA, United States)
Davis, P.
(Honeywell, Inc. Minneapolis, MN, United States)
Anderson, E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Structural Mechanics
Report/Patent Number
AIAA PAPER 91-0996
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Location: Baltimore, MD
Country: United States
Start Date: April 8, 1991
End Date: April 10, 1991
Accession Number
91A32108
Distribution Limits
Public
Copyright
Other

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