Sakaguchi Hidetsugu, Ishihara Taisuke
Department of Applied Science for Electronics and Materials, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Jun;83(6 Pt 1):061903. doi: 10.1103/PhysRevE.83.061903. Epub 2011 Jun 2.
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.
我们提出了一个由内力和摩擦力诱导的简单运动力学模型。我们首先构建一个由两个元素组成的系统作为双足运动的模拟。由于作用力与反作用力定律，内力本身不会诱导定向运动，但通过控制摩擦力可以实现定向运动。利用与热机的类比来研究这些模型系统的效率。作为双元素模型的改进版本，我们构建了一个表现出类似于分子马达驱动蛋白运动的双足运动模型。接下来，我们提出了一个线性链模型和一个阶梯模型作为原始双元素模型的扩展。通过改变内力的强度，我们在阶梯模型中发现了从直线运动到蛇形运动的转变。
