摘要
介绍一种使用形状记忆合金(SMA)薄板作为鳍条的柔性仿生鱼鳍设计。SMA鳍条的尺寸参数(特别是厚度)对仿生鱼鳍的工作性能(驱动力、变形量和响应频率等)有很大的影响,本文计算了鳍条上的外界阻力大小;根据力矩平衡原理,计算了SMA鳍条克服外界阻力所需的驱动力;由实验给出了SMA鳍条最大输出力和其厚度的关系,以及平均应变和其厚度的关系;最后得出了形状记忆合金鳍条的重要尺寸参数(厚度)的优化取值。
The design of a flexible biomimetic fish fin based on SMA（shape memory alloy）is introduced in this paper. The SMA fin - ray dimension parameters, especially the thickness, have a great influence on working performance （such as actuating force, deformation ability, response frequency and so on）of the biomimetic fin. The following aspects are discussed： drag forces that act on the fin - ray were calculated; the force of SMA fin ray that needed to overcome the exoteric drags was also calculated according to moment balance principle; the relationship between SMA finray＇s maximal output bending force and its thickness as well as the relationship between average strain and the thickness were experimentally tested; the optimal thickness of SMA fin - ray was computed.
出处
《机械与电子》
2009年第5期5-9,共5页
Machinery & Electronics
关键词
仿生鱼鳍
形状记忆合金
优化设计
鳍条
biomimetic fish fin
shape memory alloy
optimum design
fin - ray
