两栖飞机入水冲击振动噪声特性数值仿真  

Numerical simulation of vibration and noise characteristics of water entry impact of amphibious aircraft

作　　者：徐佳伟 杭天一 梁泽豪 常道宾 胡世 李海超[1] XU Jiawei;HANG Tianyi;LIANG Zehao;CHANG Daobin;HU Shi;LI Haichao(College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《中国舰船研究》2025年第2期203-213,共11页Chinese Journal of Ship Research

基　　金：国家自然科学基金资助项目(52101351,52371314)。

摘　　要：[目的]针对两栖飞机入水冲击振动噪声分析需求,研究前飞速度和入水角度对两栖飞机入水冲击振动噪声的影响规律。[方法]首先,基于任意拉格朗日-欧拉(ALE)算法,建立两栖飞机有限元模型,开展两栖飞机入水冲击运动特性分析,探究不同前飞速度和入水角度下两栖飞机入水冲击阶段运动特性规律;然后,基于统计能量分析(SEA)方法,建立两栖飞机SEA模型,开展两栖飞机入水冲击振动噪声特性数值仿真,探究前飞速度和入水角度对两栖飞机入水冲击振动噪声的影响规律。[结果]结果表明,前飞速度越小,两栖飞机受到水动力冲击响应越小,横荡程度越小,纵向速度下降也随之越慢,且两栖飞机驾驶室内噪声呈全频段降低的趋势;入水角度对驾驶室内噪声影响不大,相比而言,入水角度为4°时两栖飞机受到的水动力冲击影响最大,但横向稳定性最好。[结论]通过控制适当的前飞速度和入水角度可兼顾入水姿态及舱室噪声控制。[Objective]In response to the analysis requirements of the vibration and noise caused by the impact of amphibious aircraft entering the water,this paper studies the influence of forward speeds and entry angles on the water entry impact vibration and noise of amphibious aircraft.[Methods]First,based on the arbitrary Lagrangian-Eulerian(ALE)algorithm,a finite element model of an amphibious aircraft is established and its motion characteristics in the water entry impact stage under different forward speeds and water entry angles are analyzed.Next,based on the statistical energy snalysis(SEA)method,a SEA model of an amphibious aircraft is established and its water entry impact vibration and noise characteristics are studied,as well as the influence of forward flight speed and entry angle.[Results]The results show that the lower the water forward speed,the smaller the response of the amphibious aircraft to the hydrodynamic impact,the less roll and the slower the longitudinal velocity decrease.The noise in the cockpit of the amphibious aircraft shows a trend of reducing across the entire frequency range.The effect of water entry angle on cockpit noise is not significant.Compared with other angles,the water entry angle of 4°has the greatest impact on the hydrodynamic impact of the amphibious aircraft,but the best lateral stability.[Conclusion]By controlling the appropriate forward speed and water entry angle,the water entry attitude and cabin noise control can be taken into account.

关 键 词：两栖飞机 入水冲击 结构动力学 噪声 前飞速度 入水角度 

分 类 号：U661.44[交通运输工程—船舶及航道工程] TB533.2[交通运输工程—船舶与海洋工程]