冲击波和高速破片联合作用下夹芯复合舱壁结构的毁伤特性

侯海量; 张成亮; 李茂; 胡年明; 朱锡

doi:10.11883/1001-1455(2015)01-0116-08

冲击波和高速破片联合作用下夹芯复合舱壁结构的毁伤特性

doi: 10.11883/1001-1455(2015)01-0116-08

海军工程大学舰船工程系，湖北武汉 430033

基金项目: 国家自然科学基金项目(51209211, 51179200)

详细信息

作者简介:
侯海量(1977—), 男, 博士, 高级工程师, hou9611104@163.com

中图分类号: O383;O344.7
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- 被引次数: 0
出版历程
- 收稿日期: 2013-04-11
- 修回日期: 2014-09-06
- 刊出日期: 2015-01-25

Damage characteristics of sandwich bulkhead under the impact of shock and high-velocity fragments

Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China

摘要

摘要: 为探讨导弹战斗部近炸下舰船夹芯复合舱壁结构设计方法，采用TNT和预制破片近炸实验研究了典型夹芯复合舱壁结构在冲击波与高速破片联合作用下的破坏效应，分析了冲击波和破片联合毁伤载荷，指出了钢质面板和抗弹层的破坏模式，阐述了夹芯复合舱壁结构的防护机理。结果表明：预制破片装药近炸下，破片能远大于冲击波能，是防护结构的主要设计载荷；前面板主要是抵御冲击波，其变形破坏整体为挠曲大变形，局部为集团破片冲塞破口、破片穿孔和撞击凹坑；背板以挠曲大变形吸能为主；陶瓷材料碎裂严重，部分陶瓷碎片反向飞溅撞击前面板；纤维增强复合材料发生了纤维断裂、基体开裂、整体弯曲大变形及分层等破坏，抗弹层应避免产生穿透性破坏。
- 爆炸力学 /
- 毁伤特性 /
- 冲击波 /
- 高速破片 /
- 夹芯复合舱壁
Abstract: In order to explore the design method of sandwich bulkhead subjected to the close blast load of missile-warhead, experiments were carried out to investigate the damage effect of sandwich bulkhead subjected to combined impact of shock and fragments using cast TNT and prefabricated fragments. The combined impact load of the shock and high-velocity fragments were analyzed. The failure modes of surface plate and sandwich core of the bulkhead were pointed out, and the protective mechanism of sandwich bulkhead were analyzed. Results show that the impact energy acted on the structure by the prefabricated fragments is far larger than that of shock under the close blast of cast TNT and prefabricated fragments, and should be the main load in the design of the bulkhead. Under combined impact of close-impact waves and high-velocity fragments, the deformation and failure modes of the front plate is large deformation, combined with large amounts of perforation holes, including large shearing plug caused by the dense fragments, perforation and craters caused by individual fragments. Large deformation is the main failure modes of back plate. Al₂O₃ tiles are badly fragmented. Part of the tile fragments splashed reversely and impact on the front plate. Fiber-reinforced composite laminates will generate large deformation including damage like fibers fracture and matrix cracking. In the design of sandwich bulkhead, the front plate should avoid transverse shearing failure and collision on the bullet-resistant core, the bullet-resistant core should avoid perforation failure, and the back plate should have enough strength to absorb the residual impact energy.
- mechanics of explosion /
- damage characteristics /
- shock /
- fragments /
- sandwich bulkhead

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图 1 模型结构

Figure 1. Structures of experimental model

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图 2 实验布置及装药

Figure 2. Setup and charge photo of the experiment

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图 3 冲击波及破片在空气中的传播与时间的关系

Figure 3. Propagation of blast wave and fragments in the air as a function of time

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图 4 前面板毁伤情况

Figure 4. Damage of front plate

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图 5 弹体及抗弹陶瓷层毁伤情况

Figure 5. Damage of fragments and Al₂O₃ tiles

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图 6 纤维增强复合材料芯层毁伤情况

Figure 6. Damage of fiber reinforced core

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图 7 背板毁伤情况

Figure 7. Damage of back plate

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表 1 模型芯层结构组成

Table 1. Core structures of experimental models

模型	前隔温层	抗弹层	后隔温层	ρ_A/(kg·m^-2)
1	10 mm陶瓷棉	10 mm高强聚乙烯纤维(UMWPE)增强层合板	10 mm陶瓷棉	15.75
2		3 mm Al₂O₃陶瓷，9.4 mm芳纶纤维(Twaron)增强层合板	10 mm陶瓷棉	25.45
3	20 mm气凝胶毡	10 mm高强聚乙烯纤维(UMWPE)增强层合板	10 mm陶瓷棉	17.08
4	10 mm陶瓷棉	3 mm Al₂O₃陶瓷，高强聚乙烯纤维(UMWPE)增强层合板	10 mm陶瓷棉	27.42

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