直升机气囊应急着水砰击仿真分析

姜孝旺,舒志君,刘权
(三一重工 泵送研究院,湖南 长沙 410100)

摘要:结合试验要求,对直升机气囊应急着水砰击问题进行了简化处理,建立简化模型,并根据流固非线性耦合理论建立状态方程。然后用有限元知识,运用ANSYS/LS-DYNA软件,用数值计算方法对直升机浮囊着水砰击在同一工况下进行分析,得出直升机浮囊水平速度、加速度随时间变化曲线;并分析不同仰角、偏航角及垂直速度下,样机的应急着水冲击载荷和水平速度变化规律,最后得出分析结论。
关键词:直升机;着水砰击;ANSYS/LS-DYNA;仿真分析
中图分类号:TP391.92          文献标识码:A          文章编号:1006-0316 (2013) 02-0027-04

Simulation analysis on helicopter air emergency dipping water
JIANG Xiao-wang,SHU Zhi-jun,LIU Quan
( Pump Research Institute, Sany Heavy Industry, Changsha 410100, China )

Abstract:First combined with the test requirements, and emergency helicopter airbag water slamming problem has been simplified to create a simplified model, and nonlinear coupled fluid-structure theory to establish the equation of state. Then using the finite element knowledge,using the ANSYS / LS-DYNA software, numerical methods on the helicopter floating capsule with water slamming analyzed in the same conditions, obtained the helicopter floating capsule horizontal velocity, acceleration versus time curve; And analyze the different elevation angle, yaw angle and vertical speed, the prototype of the emergency to the variation of the horizontal velocity of the water impact load and the prototype. Finally, draw conclusions.
Key words:helicopter;dipping water;ANSYS/LS-DYNA;simulation analysis

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收稿日期:2012-07-24
作者简介:姜孝旺(1984-),男,湖北黄石人,硕士研究生,主要研究方向为机电一体化。


 

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