Locomotive and reptation motion induced by internal force and friction

Details Locomotive and reptation motion induced by internal force and friction Locomotive and reptation motion induced by internal force and friction

2011-05-06

arxiv.org/abs/1105.1205v1

Physics

Condensed Matter

Statistical Mechanics

10 pages, 7 figure

Scientific paper

We propose a simple mechanical model of locomotion induced by internal force and friction. We first construct a system of two elements as an analog of the bipedal motion. The internal force does not induce a directional motion by itself because of the action-reaction law, but a directional motion becomes possible by the control of the frictional force. The efficiency of these model systems is studied using an analogy to the heat engine. As a modified version of the two-elements model, we construct a model which exhibits a bipedal motion similar to kinesin's motion of molecular motor. Next, we propose a linear chain model and a ladder model as an extension of the original two-element model,. We find a transition from a straight to a snake-like motion in a ladder model by changing the strength of the internal force.

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