中国舰船研究2025，Vol.20Issue(2)：203-213,11.DOI:10.19693/j.issn.1673-3185.03479
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
摘要
Abstract
[Objective]In response to the analysis requirements of the vibration and noise caused by the im-pact 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 estab-lished 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 am-phibious 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 hydro-dynamic impact of the amphibious aircraft,but the best lateral stability.[Conclusion]By controlling the ap-propriate forward speed and water entry angle,the water entry attitude and cabin noise control can be taken in-to 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Key words
amphibious aircraft/water impact/Structural dynamics/acoustic noise/forward speed/entry angle分类
交通工程引用本文复制引用
徐佳伟,杭天一,梁泽豪,常道宾,胡世,李海超..两栖飞机入水冲击振动噪声特性数值仿真[J].中国舰船研究,2025,20(2):203-213,11.基金项目
国家自然科学基金资助项目(52101351,52371314) （52101351,52371314）
