Locomotive and reptation motion induced by internal force and friction

Hidetsugu Sakaguchi, Taisuke Ishihara

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)


    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-element model, we construct a model that 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.

    Original languageEnglish
    Article number061903
    JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
    Issue number6
    Publication statusPublished - Jun 2 2011

    All Science Journal Classification (ASJC) codes

    • Statistical and Nonlinear Physics
    • Statistics and Probability
    • Condensed Matter Physics


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