Lightly damped poles and zeros in the response of flexure-based servomechanisms often limit their dynamic performance. In this paper, we measure the frequency response of a single-and a double-parallelogram flexure stage coupled to low-density, low-wave-speed foams in various configurations, and find that addition of the foam yields relatively high damping of in-plane, out-of-plane, and higher-order resonances. At frequencies high enough for waves to propagate into the foam, strong interactions between the foam and flexure structure occur, giving rise to a great deal of damping. This is a promising method for improvement of the dynamic performance of positioning and constraint systems that employ flexures.
- Design Engineering Division and Computers and Information in Engineering Division
Damping Flexure Mechanisms Using Low-Density, Low-Wave-Speed Media
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Varanasi, KK, Nayfeh, SA, & Slocum, AH. "Damping Flexure Mechanisms Using Low-Density, Low-Wave-Speed Media." Proceedings of the ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 7: 29th Mechanisms and Robotics Conference, Parts A and B. Long Beach, California, USA. September 24–28, 2005. pp. 111-119. ASME. https://doi.org/10.1115/DETC2005-85448
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