液压与气动2026，Vol.50Issue(9)：55-62,8.DOI:10.11832/j.issn.1000-4858.2026.09.007
皮囊式衰减器工作特性的数值计算研究
Numerical Study on Operating Characteristics of Bladder-type Attenuator
摘要
Abstract
The drainage system is essential for the normal operation of underwater vehicles.A bladder-type attenuator is an effective measure for reducing pipeline noise.It also improves the overall stability,reliability,and stealth performance of underwater vehicles.We use the ideal gas equation of state and the Ogden hyperelastic constitutive equation.The arbitrary Lagrangian-Eulerian(ALE)method is adopted to simulate the shapes of the rubber bladder and the fluid domain of the bladder-type attenuator under steady-state operating conditions.The noise transmission loss of the attenuator is calculated using the acoustic simulation software Actran.The results show that the ALE method effectively handles large deformations of rubber materials.It also addresses two-way fluid-structure interaction.Under steady-state operating conditions,the rubber bladder presents a trilobal-like shape.The attenuator significantly suppresses noise over a wide frequency range.关键词
衰减器/传递损失/流固耦合/超弹性Key words
attenuator/transmission loss/fluid-structure interaction/hyperelasticity分类
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聂硕琪,胡军华,叶凡,曹树平,罗小辉..皮囊式衰减器工作特性的数值计算研究[J].液压与气动,2026,50(9):55-62,8.基金项目
国家自然科学基金面上项目(51975224) （51975224）
