福州大学学报（自然科学版）2026，Vol.54Issue(3)：284-291,8.DOI:10.7631/issn.1000-2243.25176
仿生鱼身体尾鳍刚度匹配机制的数值仿真
Numerical simulation study on body tail fin stiffness matching mechanism of bionic fish
摘要
Abstract
Focusing on the stiffness matching mechanism between the body and caudal fin of a biomi-metic fish,a dynamic model is established.By adjusting the flexibility coefficients of the body and caudal fin to simulate stiffness variations,its influence on propulsion performance is investigated.A numerical model is constructed based on the Fluent platform,and oscillatory experiments are conduc-ted under uniform inflow conditions to systematically analyze the effects of stiffness combinations on net thrust,drag,power consumption,and propulsion efficiency.The results indicate that reducing the stiffness of the caudal fin significantly enhances net thrust but increases drag and power consumption.Conversely,reducing body stiffness decreases net thrust while improving propulsion efficiency.The stiffness of the body and caudal fin must be independently optimized and matched,with specific combinations maximizing thrust performance,achieving an improvement of 74.25%compared to the baseline.The stiffness matching between the body and caudal fin provides a reference for the swimming performance of biomimetic fish and the synergistic stiffness design of robotic fish.关键词
仿生鱼/数值模拟/刚度分布/水动力Key words
bionic fish/numerical simulation/stiffness distribution/hydrodynamics分类
机械制造引用本文复制引用
于潇雁,林祥,王敬钏,陈炳兴..仿生鱼身体尾鳍刚度匹配机制的数值仿真[J].福州大学学报（自然科学版）,2026,54(3):284-291,8.基金项目
国家自然科学基金资助项目(52205303,52575271) （52205303,52575271）
福建省自然科学基金资助项目(2023J01056) （2023J01056）
