27 March 2012 A bi-stable oscillator for increasing damping and providing passive adaptability
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Abstract
This research investigates a bi-stable oscillator which, through snap-through actions, can significantly increase energy dissipation loss factor and provide passive damping adaptability with respect to input amplitude and frequency. The increase in motion generated during snap-through leads to a significant increase in the energy dissipated by the embedded damper and the corresponding loss factor. The system parameters can be designed such that the snap-though threshold occurs at different input amplitudes. Overall, the device can be programmed to adjust damping to changes in the loading environment in a passive manner.
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David R. Johnson, Manoj Thota, F. Semperlotti, K. W. Wang, "A bi-stable oscillator for increasing damping and providing passive adaptability", Proc. SPIE 8341, Active and Passive Smart Structures and Integrated Systems 2012, 83410A (27 March 2012); doi: 10.1117/12.913290; https://doi.org/10.1117/12.913290
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