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Serpentine locomotion through elastic energy release.
F Dal Corso1, D Misseroni1, N M Pugno1,2,3,4
1DICAM-University of Trento, via Mesiano 77, Trento, Italy.
Journal of the Royal Society, Interface
|June 2, 2017
Summary
This study models serpentine locomotion using configurational mechanics, revealing that propulsion arises from tangential forces on a deformable rod within a channel. Experiments confirm this novel finding, enabling further research into snake-like movement dynamics.
Area of Science:
- * Mechanics and Mechanical Engineering
- * Robotics and Biomechanics
Background:
- * Serpentine locomotion, mimicking snake movement, is crucial for navigating complex environments.
- * Previous models often simplified the mechanics or overlooked key physical interactions.
Purpose of the Study:
- * To develop a novel configurational mechanics model for serpentine locomotion.
- * To analyze scenarios including partial channel engagement and localized muscle relaxation.
- * To experimentally validate the theoretical framework and identify propulsive force mechanisms.
Main Methods:
- * Derivation of a serpentine locomotion model using configurational mechanics principles.
- * Analysis of a deformable rod sliding within a frictionless channel representing snake-like constraints.
- * Experimental validation using a custom apparatus with flexible bars in a frictionless channel.
Main Results:
- * A new theoretical formulation corrects and extends previous models of serpentine motion.
- * Propulsion is demonstrated to result from tangential reaction forces at the frictionless constraint.
- * Experimental results fully corroborate the theoretical predictions.
Conclusions:
- * The study provides a robust theoretical and experimental framework for understanding serpentine locomotion.
- * The counter-intuitive tangential force mechanism for propulsion is experimentally verified.
- * Findings pave the way for exploring factors like stiffness, geometry, and friction in snake-like robots.
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