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Proceedings Paper

Passive damping technology demonstration
Author(s): Robert E. Holman; Susan M Spencer; Eric M. Austin; Conor D. Johnson
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Paper Abstract

A Hughes Space Company study was undertaken to (1) acquire the analytical capability to design effective passive damping treatments and to predict the damped dynamic performance with reasonable accuracy; (2) demonstrate reasonable test and analysis agreement for both baseline and damped baseline hardware; and (3) achieve a 75% reduction in peak transmissibility and 50% reduction in rms random vibration response. Hughes Space Company teamed with CSA Engineering to learn how to apply passive damping technology to their products successfully in a cost-effective manner. Existing hardware was selected for the demonstration because (1) previous designs were lightly damped and had difficulty in vibration test; (2) multiple damping concepts could be investigated; (3) the finite element model, hardware, and test fixture would be available; and (4) damping devices could be easily implemented. Bracket, strut, and sandwich panel damping treatments that met the performance goals were developed by analysis. The baseline, baseline with damped bracket, and baseline with damped strut designs were built and tested. The test results were in reasonable agreement with the analytical predictions and demonstrated that the desired reduction in dynamic response could be achieved. Having successfully demonstrated this approach, it can now be used with confidence for future designs as a means for reducing weight and enhancing reliability.

Paper Details

Date Published: 5 May 1995
PDF: 14 pages
Proc. SPIE 2445, Smart Structures and Materials 1995: Passive Damping, (5 May 1995); doi: 10.1117/12.208888
Show Author Affiliations
Robert E. Holman, Hughes Space Co. (United States)
Susan M Spencer, Hughes Space Co. (United States)
Eric M. Austin, CSA Engineering, Inc. (United States)
Conor D. Johnson, CSA Engineering, Inc. (United States)

Published in SPIE Proceedings Vol. 2445:
Smart Structures and Materials 1995: Passive Damping
Conor D. Johnson, Editor(s)

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