论文标题
灵感来自尤格伦尼德膜的智能螺旋结构
Smart helical structures inspired by the pellicle of euglenids
论文作者
论文摘要
本文介绍了一个可重新配置结构的概念，该结构是由尤格莱尼（Euglenids）的细胞壁结构（一个单细胞生物的家族）和相邻条带的相对滑动所启发的。均匀的滑动将直的和平行条的组装组成的圆柱变成较小的高度和较大半径的圆柱体，将条带变形为平行螺旋的家族。我们检查了该圆柱组件的机制，其中允许互锁条在其交界处自由滑动，并计算外部力（轴向力和两端的轴向力和轴向扭矩，或在横向表面上的压力），以驱动和控制复合材料结构的形状变化。尽管结构很简单，但我们发现一种非常复杂的机械行为可以通过自发曲率或条带的扭曲来调节。
This paper deals with a concept for a reconfigurable structure bio-inspired by the cell wall architecture of euglenids, a family of unicellular protists, and based on the relative sliding of adjacent strips. Uniform sliding turns a cylinder resulting from the assembly of straight and parallel strips into a cylinder of smaller height and larger radius, in which the strips are deformed into a family of parallel helices. We examine the mechanics of this cylindrical assembly, in which the interlocking strips are allowed to slide freely at their junctions, and compute the external forces (axial force and axial torque at the two ends, or pressure on the lateral surface) necessary to drive and control the shape changes of the composite structure. Despite the simplicity of the structure, we find a remarkably complex mechanical behaviour that can be tuned by the spontaneous curvature or twist of the strips.
