超空泡技术可以大幅提高水下航行体的速度，但在实验中往往受入水状态的影响而运动失稳，针对该问题本文研究航行体的多稳态运动。基于动力学行为分布图和相轨迹图判定了航行体系统具有稳定运动、周期振荡、非周期混沌振荡3种稳态运动，以及稳定运动与周期运动共存、周期运动与混沌运动共存2种多稳态运动现象。并采用仿真工具验证了航行体的多稳态运动。从原理上定性解释了入水状态对航行体稳定性的影响。
Supercavitating technology can greatly improve the speed of underwater vehicle. However, the entry state often leads to the instability of the vehicle motion in the experiment. In this paper, the multistability motions of the vehicle are studied. Based on the dynamic behavior distribution diagram and phase trajectory diagram. The vehicle system is judged to have three kinds of steady motion, i.e. stable motion, periodic oscillation and aperiodic chaotic oscillation, and two kinds of multi steady motion, i.e. coexistence of stable motion and periodic motion, coexistence of periodic motion and chaotic motion. And the multistability motions of the vehicle are verified by simulation tools. The influence of the entry state on the stability of the vehicle is qualitatively explained in principle.
2022,44(3): 25-30 收稿日期：2021-05-24
DOI：10.3404/j.issn.1672-7649.2022.03.005
分类号：U661.3
作者简介：吕一品(1993-)，女，博士后，研究方向为水下航行体动力学特性
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