A Cosserat-based formulation for elastic, axisymmetric shells with implications to the pulsed-jetting propulsion of soft-bodied aquatic vehicles

Federico Renda, Francesco Giorgio-Serchi, Frederic Boyer

Research output: Contribution to conferenceAbstractpeer-review

Abstract / Description of output

We take the cue from recent development in geometric-based modelling in order to describe the dynamics of a novel soft-structured aquatic vehicle. The Cosserat-like formulation for an axisymmetric, elastic shell subject to concentrated dynamic loadings lends itself to the case of this new vehicle, recently designed by the authors, which consists of a shell of rubber-like materials undergoing sequential stages of inflation and deflation in order to propel itself in water via pulsed-jetting. The experiments performed on the existing robotic prototypes are used for the validation of the geometric model. This is eventually employed for deriving an accurate measure of the efficiency of propulsion which explicitly accounts for the elastic energy involved during the propulsion routine. The model yields a-priori estimations of swimming efficiency based on vehicle specifications and mode of actuation. These provide invaluable information for both design optimization and control, as well as a means to study the biomechanics of soft-bodied aquatic organisms.
Original languageEnglish
Publication statusPublished - 1 Mar 2016
EventAmerican Physical Society March Meeting 2016 - Baltimore, United States
Duration: 14 Mar 201618 Mar 2016
https://www.aps.org/meetings/baps/march16.cfm

Conference

ConferenceAmerican Physical Society March Meeting 2016
Abbreviated titleAPS
Country/TerritoryUnited States
CityBaltimore
Period14/03/1618/03/16
Internet address

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