Supersonic impact on soft floating flims and optimal elastic cusioning
ORAL
Abstract
Supersonic impact on soft floating flims and optimal conditions for elastic cushioning
*We investigate the dynamics and energy transfer during the impact of fast projectiles on floating, thin, hyperelastic membranes. In this extreme regime, the impact velocity far exceeds the elastic wave speed of the material. By systematically varying the impact velocity, impactor density, and membrane radius, we construct a phase diagram that delineates the conditions under which a fast, heavy projectile can be completely arrested by a floating elastic film. Using synchronized high-speed imaging, stereoscopic digital image correlation (stereo-DIC), and particle image velocimetry (PIV), we capture the coupled fluid–structure dynamics following elastic water entry.
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Presenters
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Lei Yi
- University of Massachusetts Amherst