中山大学学报（自然科学版）（中英文）2024，Vol.63Issue(1)：113-120,8.DOI:10.13471/j.cnki.acta.snus.2023B041
仿生鳄鱼游动推进机制动力学分析
Dynamical analysis of propulsive mechanism of bionic crocodile swimming in water
摘要
Abstract
The dynamics model of a swimming crocodile is established based on its kinematic model and Lighthill's slender-body theory.Furthermore,the propulsion efficiency of a swimming crocodiles is calculated using Froude's theory.The results show that the cruising velocity of the crocodile increases with the increase of the tail's swinging frequency,amplitude and wavelength.And,the increase of swinging frequency being the greatest contribution,the increase of swavelength being the least contri-bution.It is also observed that the thrust power increases gradually with the increase of the tail's swing-ing frequency,amplitude and wavelength.When the oscillating frequency is 0.7 Hz,the oscillating am-plitude is 0.2 m and the wavelength is 1.2 m,the thrust efficiency is up to 64%.The thrust efficiency in-creases first and then decreases with the increase of Re,and reaches the maximum value when the Re is 3×105,gradually approaching the constantvalue of 55%with the increase of St.The results provid an valuable reference for the development of a crocodile-like robot.关键词
仿生鳄鱼/摆尾推进/动力学建模/游动效率Key words
bionic crocodile/wagging thrust/dynamics modeling/swimming efficiency分类
数理科学引用本文复制引用
冯创新,蒋建平,白宏磊,何俊轩,曾钦,卓志钦..仿生鳄鱼游动推进机制动力学分析[J].中山大学学报（自然科学版）（中英文）,2024,63(1):113-120,8.基金项目
深圳市高校稳定支持重点项目(GXWD20201231165807008,GXWD20200830220051001) （GXWD20201231165807008,GXWD20200830220051001）
