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- W830205631 abstract "Potential passive damping concepts for use in space structures are identified. The effectiveness of copper brush, wool swab, and silly putty in chamber dampers is investigated through natural vibration tests on a tubular aluminum member. The member ends have zero translation and possess partial rotational restraints. The silly putty in chamber dampers provide the maximum passive damping efficiency. Forced vibration tests are then conducted with one, two, and three damper chambers containing silly putty. Owing to the limitation of the vibrator used, the performance of these dampers could not be evaluated experimentally until the forcing function was disengaged. Nevertheless, their performance is evaluated through a forced dynamic finite element analysis conducted as a part of this investigation. The theoretical results based on experimentally obtained damping ratios indicate that the passive dampers are considerably more effective under member natural vibration than during forced vibration. Also, the maximum damping under forced vibration occurs at or near resonance." @default.
- W830205631 created "2016-06-24" @default.
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- W830205631 date "1987-12-01" @default.
- W830205631 modified "2023-09-27" @default.
- W830205631 title "Experimental and theoretical investigation of passive damping concepts for member forced and free vibration" @default.
- W830205631 hasPublicationYear "1987" @default.
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