机械科学与技术2026，Vol.45Issue(5)：778-786,9.DOI:10.13433/j.cnki.1003-8728.20240097
采用双向流固耦合的柔性胸鳍水动力学分析
Research on Hydrodynamic Characteristics of Flexible Pectoral Fins with Bidirectional Fluid-structure Coupling
摘要
Abstract
In order to explore the hydrodynamic performance of flexible pectoral fins in biomimetic robotic fish during swimming,the pectoral fin of angelfish(the family cichlidae and order perciformes)was chosen as the biomimetic model.IPMC(Ionic polymer metal composite)was employed as the fin material.Using the bidirectional fluid-structure coupling simulation method,we first analyze the effects of different aspect ratio parameters on the hydrodynamic performance;subsequently,we investigate the effects of different swing amplitudes and frequencies.Results indicated that a moderate increase in aspect ratio led to a slight decrease in hydrodynamic performance but significantly saved IPMC material usage.Additionally,increasing swing amplitude and frequency proved advantageous in enhancing the hydrodynamic performance of the pectoral fin.With a rear edge length of 9.24 mm and an aspect ratio of 4.77,driven by a 4 V,0.6 Hz signal,the biomimetic pectoral fin achieved optimal comprehensive propulsion performance.This research work establishes a foundational basis for the design and control of biomimetic actuators.关键词
柔性胸鳍/双向流固耦合/IPMC/水动力学性能Key words
flexible pectoral fin/bidirectional fluid-structure coupling/IPMC/hydrodynamic performance分类
机械制造引用本文复制引用
范东,安坤,曹凤蓉,刘磊,孟江..采用双向流固耦合的柔性胸鳍水动力学分析[J].机械科学与技术,2026,45(5):778-786,9.基金项目
国家自然科学基金项目(61774138)与山西省自然科学基金面上项目(202203021221098) （61774138）
