A bi-stable oscillator for increasing damping and providing passive adaptability

David R. Johnson; Manoj Thota; F. Semperlotti; K. W. Wang

doi:10.1117/12.913290

27 March 2012 A bi-stable oscillator for increasing damping and providing passive adaptability

David R. Johnson, Manoj Thota, F. Semperlotti, K. W. Wang

Proceedings Volume 8341, Active and Passive Smart Structures and Integrated Systems 2012; 83410A (2012) https://doi.org/10.1117/12.913290
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

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.

Citation Download Citation

David R. Johnson, Manoj Thota, F. Semperlotti, and 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); https://doi.org/10.1117/12.913290

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