Damage Characteristics of Typical Ship Targets Subjected to Underwater Explosion

doi:10.12382/bgxb.2024.0960

Abstract

Abstract:

As the main platforms in maritime warfare,the warfare ships face various threats,among which underwater explosion is the most destructive one.In order to study the structural damage and dynamic response characteristics of ship under underwater explosion,a simplified model of Arleigh Bruke-class destroyer is established,and the underwater explosion is numerically simulated using nonlinear finite element software.The process of ship damage at different explosion distances and the overload acceleration at key locations are analyzed.The results show that the large local damage fracture of ship is the main damage form of near-field underwater explosion,and the whole whiplash movement of ship is the main damage form of far-field underwater explosion.

Key words: ship, ship structure, underwater explosion, damage characteristics

YAN Xiaojun, SUN Hao, MA Lin, ZHANG Xuhui, WU Xi, YONG Shunning. Damage Characteristics of Typical Ship Targets Subjected to Underwater Explosion[J]. Acta Armamentarii, 2024, 45(S2): 215-221.

Figures/Tables 10

Fig.1 Calculation model for underwater explosion ship damage

Table 1 Steel material parameters

参数	数值	参数	数值
E/MPa	201000	C	4×10¹⁵
v	0.28	P	12
E_t/MPa	600	ε_f	0.2

Table 2 TNT material parameters

A/GPa	B/GPa	R₁	R₂	w	E₀/J·m^-3
371	3.23	4.15	0.95	0.3	0.07

Fig.2 The process of ship damage subjected to contact explosion

Fig.3 Local damage process of ship near explosives

Table 3 Overload accelerations at the main positions of ship

位置	横向过载	竖向过载	纵向过载
直升机舱室甲板
后部垂发安装甲板
反舰导弹发射架安装甲板
后近防炮安装甲板
火控雷达安装甲板
前近防炮安装甲板
主炮安装甲板

Fig.4 The damage process of ship subjected to near-field explosion

Fig.5 Local damage process of ship near explosives

Fig.6 The damage process of ship subjected to far-field explosion

Fig.7 Local damage process of ship subjected to far field explosion

References 14

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位置	横向过载	竖向过载	纵向过载
直升机舱室甲板
后部垂发安装甲板
反舰导弹发射架安装甲板
后近防炮安装甲板
火控雷达安装甲板
前近防炮安装甲板
主炮安装甲板

位置	横向过载	竖向过载	纵向过载
直升机舱室甲板
后部垂发安装甲板
反舰导弹发射架安装甲板
后近防炮安装甲板
火控雷达安装甲板
前近防炮安装甲板
主炮安装甲板

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