空投鱼雷入水载荷

潘光; 杨悝

doi:10.11883/1001-1455(2014)05-0521-06

空投鱼雷入水载荷

doi: 10.11883/1001-1455(2014)05-0521-06

潘光,
杨悝

西北工业大学航海学院，陕西西安 710072

详细信息

作者简介:
潘光(1969—), 男, 博士, 教授, 博士生导师

中图分类号: O383.1; TJ610.2
计量
- 文章访问数: 3890
- HTML全文浏览量: 325
- PDF下载量: 508
- 被引次数: 0
出版历程
- 收稿日期: 2013-01-11
- 修回日期: 2013-04-08
- 刊出日期: 2014-09-25

Impact force encountered by water-entry airborne torpedo

Pan Guang,
Yang Kui

College Of Marine Engineering, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, China

摘要

摘要: 为了研究空投鱼雷的入水过程，首先分析入水过程中的受力情况进行数值计算；然后使用数值模拟软件Msc.Dytran建立鱼雷入水的有限元模型，计算入水过程中雷体所遭受的冲击压力及其在冲击面上的分布情况，并对不同入水速度和角度下冲击压力峰值、不同头部形状冲击压力峰值特点及鱼雷入水弹道做了分析与讨论，结果表明：鱼雷入水速度和入水角度会对鱼雷壳体所受载荷产生重要影响，研究结果可为预测鱼雷入水冲击载荷提供参考。
- 爆炸力学 /
- 冲击载荷 /
- MSC/DYTRAN /
- 空投鱼雷 /
- 入水
Abstract: To investigate the water-entry process of an airborne torpedo, the forces encountered by the water-entry airborne torpedo were analyzed and calculated by using MATLAB.A finite element model for the torpedo entry into water was established by using the finite element code MSC/DYTRAN.Thereby, by considering different water-entry angles and velocities, the impact forces encountered by the water-entry torpedoes were calculated as well as their corresponding pressure at the surfaces of the torpedoes for the torpedoes with different warhead shapes.The effects of water-entry angles, velocities and warhead shapes were analyzed on the maximum force and the peak pressure encountered by the water-entry torpedoes.And the water-entry trajectories of the torpedoes were discussed.The investigated results are helpful for forecasting the impact forces of water entry about the torpedoes.
- Mechanics of explosion /
- impact force /
- MSC/DYTRAN /
- airborne torpedo /
- water entry

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图 1 鱼雷入水运动简图

Figure 1. Schematic of torpedo entry into water

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图 2 鱼雷有限元网格模型

Figure 2. Finite element model of torpedo

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图 3 鱼雷入水有限元模型

Figure 3. Finite element model for torpedo entry into water

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图 4 鱼雷入水耦合面作用力时间历程曲线

Figure 4. Coupling force-time curve for torpedo entry into water

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图 5 入水时鱼雷及水的压力云图

Figure 5. Pressure contour for torpedo entry into water

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图 6 不同速度下鱼雷头部所受到的压力峰值

Figure 6. The pressure peak of torpedo head at different water-entry velocities

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图 7 不同入水速度鱼雷弹道曲线图

Figure 7. Torpedo trajectory curves at different water-entry velocities

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图 8 不同头型鱼雷有限元模型

Figure 8. Finite element models for torpedo with different headtypes

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图 9 不同头型入水耦合面作用力时程曲线

Figure 9. Coupling force-time curve for water-entry torpedoes with different head shapes

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表 1 鱼雷入水时力学参数

Table 1. Mechnical parameters for torpedo entry into water

t/ms	F_{m, a}/kN	F_{m, n}/kN	M_{m, n}/(kN·m)
0.34	28.5	19.7	121.6
1.00	10.1	6.3	38.9
2.00	2.1	1.7	10.5
3.00	3.6	2.3	14.2
4.00	2.1	2.0	12.3
5.00	1.8	1.2	7.4
6.00	1.6	1.1	6.8

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表 2 不同角度入水时鱼雷所受最大冲击力

Table 2. The maximum impact force at different water-entry angles

ϕ/(°)	F_{m, a}/kN	F_{m, n}/kN
30	23.9	21.8
45	30.9	19.2
60	36.5	11.7
75	38.5	6.5
90	68.0	0

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参考文献(8)

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[8]	Karman V T. The impact of seaplane floats during landing[R]. NACA Technical Notes 321. National Advisory Committee for Aero-nautics, Washington D C, USA, 1929.