舰艇新型宏观负泊松比效应蜂窝舷侧防护结构

杨德庆; 马涛; 张梗林

doi:10.11883/1001-1455(2015)02-0243-06

舰艇新型宏观负泊松比效应蜂窝舷侧防护结构

doi: 10.11883/1001-1455(2015)02-0243-06

上海交通大学船舶海洋与建筑工程学院，上海 200030

基金项目: 国家自然科学基金项目(11072149);高等学校博士学科点专项科研基金项目(20100073110011)

详细信息

作者简介:
杨德庆(1968—), 男, 教授, yangdq@sjtu.edu.cn

中图分类号: O342;U661.44;TH132.41
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- 被引次数: 0
出版历程
- 收稿日期: 2013-07-23
- 修回日期: 2014-01-28
- 刊出日期: 2015-03-25

A novel auxetic broadside defensive structure for naval ships

School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200030, China

摘要

摘要: 提出一种具有宏观负泊松比效应的新型蜂窝舷侧防护结构，通过对负泊松比效应蜂窝胞元特殊结构构型设计，实现中等弹速下良好抗爆抗冲击性能。利用有限元动力学分析软件，研究鱼雷或导弹水下对舷侧防护结构的撞击侵入和穿透过程，对比研究了不同蜂窝构型、材料、胞元尺寸和胞壁厚度对舷侧结构抗冲击性能的影响。结果表明，蜂窝防护结构具有良好的抗冲击性能，负泊松比蜂窝构型较正泊松比蜂窝构型抗冲击性能更优。
- 固体力学 /
- 舰船防护结构 /
- 非线性有限元 /
- 蜂窝结构 /
- 负泊松比 /
- 负泊松比结构 /
- 抗冲击
Abstract: Broadside defensive structure is important for naval vessels to maintain vitality. A novel broadside defensive structure with macro negative Poisson's ratio is proposed to achieve higher anti-shock and anti-blast performance by design of auxetic honeycomb configuration. The process of an anti-ship missile impinging on and penetrating broadside structure is simulated by nonlinear finite element software. Effects of different design parameters on broadside structure, like auxetic honeycomb configurations, materials, sizes and thickness of honeycomb cell, are studied and compared. Numerical results indicate that counter-impingement capacity can be improved by adoption of auxetic broadside structure, and honeycomb cell with negative Poisson's ratio is better than that of common honeycomb cell on anti-blast performance.
- solid mechanics /
- ship defensive structure /
- nonlinear finite element /
- honeycomb structure /
- negative Poisson's ratio /
- auxetic structure /
- anti-shock

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图 1 负泊松比蜂窝结构舷侧防护几何模型及有限元模型

Figure 1. Geometry and FEM model of defensive structure with re-entrant honeycomb

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图 2 正、负泊松比效应蜂窝夹芯舷侧防护结构(局部)示意图

Figure 2. Defensive structure with honeycomb and re-entrant honeycomb (local)

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图 3 正、负泊松比蜂窝胞元尺寸示意图

Figure 3. Size of honeycomb cell and re-entrant honeycomb cell

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图 4 3种舷侧防护结构破损示意图

Figure 4. Crevasse shapes of three kinds of defensive structures

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图 5 不同胞元层数下舷侧结构破损图

Figure 5. Crevasse shapes of auxetic defensive structure with different layers of honeycomb cell

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表 1 材料参数

Table 1. Material parameters of 45 steel, TC4 and 921 steel

材料	基本参数
材料	E/GPa	ν	ρ/(kg·m^-3)	T_m/K	T_r/K
45钢	200	0.30	7 820	1 783	293
TC4	113	0.33	4 510	1 920	293
921钢	200	0.30	7 830	1 763	293
材料	Johnson-Cook本构模型参数
材料	A/MPa	B/MPa	C	n	m
45钢	507	320	0.064	0.280	1.06
TC4	1 130	250	0.032	0.200	1.00
921钢	898	356	0.022	0.586	1.05
材料	Johnson-Cook失效模型参数
材料	D₁	D₂	D₃	D₄	D₅
45钢	0.1	0.76	1.57	0.005	-0.84
TC4	0	0.33	0.48	0.004	3.90
921钢	0.8	2.10	0	0.002	0.60

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表 2 弹体剩余速度

Table 2. Residual velocity of missiles

蜂窝构型	h/mm	蜂窝材料	v_r/(m·s^-1)
蜂窝构型	h/mm	蜂窝材料	v₀=80 m·s^-1	v₀=200 m·s^-1	v₀=300 m·s^-1
	5	45钢	0	131	249
	8	45钢	0	110	239
正泊松比	10	45钢	0	90	236
	5	921钢	0	74	236
	5	TC4	0	101	253
	5	45钢	0	125	241
	8	45钢	0	103	227
负泊松比	10	45钢	0	86	208
	5	921钢	0	71	240
	5	TC4	0	80	252
常规防护结构	5	45钢	0	128	231

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表 3 不同胞元层数下弹体剩余速度对比

Table 3. Residual velocity of missiles with different cell layers

N	v_r/(m·s^-1)
N	v₀=80 m·s^-1	v₀=200 m·s^-1	v₀=300 m·s^-1
2	0	0	254
3	0	0	253
5	0	29.5	258

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