NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Design of a D-Strut and its application results in the JPL, MIT, and LaRC test bedsHigh damping at very low magnitudes of vibration is provided by an 'Arched Flexure' D-Strut. Five of these devices have been incorporated in JPL's CSI truss structure, and five more in MIT's interferometer test bed. Two were also temporarily installed in the LaRC CSI test structure. Damping factors in the 50 percent category are being provided at vibration motions as small as 50 nm. The 'Arched Flexure' used in the D-Strut maximizes the volumetric stiffness parameter relative to its axial stiffness. In turn, this enables high damping factors, even in a very rigid truss structure. This paper includes a presentation and discussion of both element and system test data taken at JPL, LaRC, and MIT. Also provided is a detailed description of the D-Strut, the dynamic model, and several graphs showing design parameter variations that will make it possible to evaluate the D-Strut for other applications.
Document ID
19920051804
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Davis, L. P.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Workman, Brian J.
(Honeywell, Inc. Glendale, AZ, United States)
Chu, Cheng-Chih
(JPL Pasadena, CA, United States)
Anderson, Eric H.
(MIT Cambridge, MA, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Mechanical Engineering
Report/Patent Number
AIAA PAPER 92-2274
Meeting Information
Meeting: AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Location: Dallas, TX
Country: United States
Start Date: April 13, 1992
End Date: April 15, 1992
Accession Number
92A34428
Distribution Limits
Public
Copyright
Other

Available Downloads

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