Methods for creating an undulating structure
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United States of America Patent
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Nov 26, 2019
Grant Date -
N/A
app pub date -
Jan 18, 2019
filing date -
Jan 18, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Methods for creating undulating structures are disclosed in which an elastic sheet and a rigid restraining member having different curvatures are joined. The structures incorporate stopping members, such as stopped grooves, to manage the transverse deformations of the elastic sheet. The joint is such that the transverse deformations may migrate along the undulating structure in a coordinated, wave, either to gather kinetic energy, or to propel the structure relative to a fluid. To facilitate such a wave, the elastic sheet can be joined to the retaining member via passive stopping members that oscillate about their points of attachment to the retaining member. These are also constructed to limit the elastic sheet from reverting to its original configuration. The retaining member can be annular structures, and the elastic sheet members can be tubular. Stopping members can be actuated to power the transverse deformations of the elastic sheet to oscillate.
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