Study of unsteady motion simulation for the torpedo oblique water entry problem

被引：0
|
作者：
Zhang Y.-Q. [1 ]
Cai W.-J. [1 ]
Li J.-C. [1 ]
机构：
[1] The 705 Research Institute, China Shipbuilding Industry Corporation, Xi'an
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2019年 / 23卷 / 01期
关键词：
FEM/SPH coupling method; Torpedo; Water entry; Whip;
D O I：
10.3969/j.issn.1007-7294.2019.01.003
中图分类号：
学科分类号：
摘要：
For the complex process of torpedo water entry, the process of torpedo water entry is simulated by FEM/SPH coupling method to study the changes of the impact acceleration and the attitude of torpedo. The important effect of the 'whip'is found for the unsteady movement of torpedo water entry. The phenomenon of 'whip', which is due to the low pressure when torpedo water impact, is simulated by analyzing the test data and improving the simulation model. The real process of the torpedo water entry is analyzed. The simulation results could provide a basis analysis for water entry trajectory design and structure load bearing design of torpedo. © 2019, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：20 / 28
页数：8
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