铝蜂窝夹芯板入水冲击动态响应特性实验研究

郭开岭; 廖永; 朱志奎; 刘栋; 朱凌

doi:10.11883/bzycj-2024-0274

铝蜂窝夹芯板入水冲击动态响应特性实验研究

doi: 10.11883/bzycj-2024-0274

郭开岭^{1, 2,},
廖永²,
朱志奎²,
刘栋³,
朱凌^{2, 4, ,}

1.
高性能船舶技术教育部重点实验室（武汉理工大学），湖北武汉 430063
2.
武汉理工大学船海与能源动力工程学院，湖北武汉 430063
3.
康明斯东亚研发有限公司，湖北武汉 430056
4.
武汉理工大学威海研究院，山东威海 264300

基金项目: 国家自然科学基金（12202328，12172265）

详细信息

作者简介:
郭开岭（1989－　），男，博士，副教授，guokailing@whut.edu.cn

通讯作者:
朱　凌（1962－　），男，博士，教授，lingzhu@whut.edu.cn

中图分类号: O353.4
计量
- 文章访问数: 255
- HTML全文浏览量: 16
- PDF下载量: 57
- 被引次数: 0
出版历程
- 收稿日期: 2024-08-02
- 修回日期: 2024-12-02
- 网络出版日期: 2024-12-04

Experimental study on dynamic responses of aluminum honeycomb sandwich plates subjected to water impact

GUO Kailing^{1, 2
,},
LIAO Yong²,
ZHU Zhikui²,
LIU Dong³,
ZHU Ling^{2, 4
, ,}

1.
Key Laboratory of High Performance Ship Technology, Ministry of Education, Wuhan University of Technology, Wuhan 430063, Hubei, China
2.
School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, Hubei, China
3.
Cummins East Asia Research and Development Company, Ltd., Wuhan 430056, Hubei, China
4.
Wuhan University of Technology Weihai Research Institute, Weihai 264300, Shandong, China

摘要

摘要: 通过实验方法研究了铝蜂窝夹芯板在入水冲击载荷作用下的压力载荷特性和结构变形机理。首先，搭建了蜂窝夹芯板入水冲击实验平台，开展了不同落体高度下的蜂窝夹芯板入水冲击实验，通过三维扫描仪得到了面板的变形结果，并监测了不同测点的入水冲击压力时程，同时验证了实验的可重复性。在此基础上，研究了蜂窝夹芯板入水冲击过程中的压力载荷特性，并与不同结构的入水冲击压力进行了对比。此外，分析了蜂窝夹芯板的变形模式、最终挠度等特性，给出了面板最终挠度和芯层压缩量的拟合公式。研究结果表明，蜂窝夹芯板表面的入水冲击压力分布不均匀，但在一定落体高度范围内，其压力峰值均与落体高度近似呈线性变化。与刚性平板入水冲击相比，蜂窝夹芯板的入水冲击压力峰值较小。相比同质量的等效铝板而言，蜂窝夹芯板的入水冲击压力峰值更小，压力持续时间更长。不同落体高度下，蜂窝夹芯板的面板变形模式基本一致。随着落体高度的增加，蜂窝夹芯板前面板和后面板中点处的最终挠度近似呈斜率减小的二次抛物线增长。在入水冲击载荷作用下，蜂窝夹芯板后面板变形明显小于等效铝板变形，表明蜂窝夹芯板具有更好的抗冲击性能。
- 蜂窝夹芯板 /
- 入水冲击实验 /
- 入水冲击载荷 /
- 变形模式 /
- 最终挠度
Abstract: The pressure characteristics and structural deformation mechanism of aluminum honeycomb sandwich plates (AHSPs) under water-entry impact were investigated through experimental methods. A self-designed drop experimental platform in the water tank was established, and the water-entry impact experiments of AHSPs at different drop heights were carried out. Meanwhile, the deformation of the face sheets was measured by a 3D scanner, and the time history of water impact pressure at different measuring points was monitored. Furthermore, the repeatability of the experiment was verified. On this basis, the water impact load characteristics of AHSPs during the process of water entry were studied and compared with those of other structures in published papers. In addition, the deformation modes and permanent deflection characteristics of AHSPs were analyzed, and the fitting formulas of the permanent deflection of the face sheets and the compression of the core were proposed. Results show that the distribution of the water impact pressure on the front sheet of AHSPs is uneven. However, within the range of drop heights studied, the peak value of the water impact pressure is approximately linear with the drop height. Additionally, compared to the water entry of rigid plates, the peak value of the water impact pressure of AHSPs is smaller. Compared with the mass equivalent aluminum plates, the peak value of the water impact pressure of AHSPs is much smaller, while the pressure duration of AHSPs is longer. The deformation modes of the face sheets of AHSPs at different drop heights are almost the same. Besides, with the increase of the drop height, the permanent deflections of the front and back faces of AHSPs increase approximately in the form of a quadratic parabola with decreasing slope. Suffering from water entry impact loadings, the permanent deflections of the back sheet of AHSPs are smaller than those of the equivalent aluminum plates, indicating that the AHSPs have better impact resistance compared with the equivalent aluminum plates.
- honeycomb sandwich plate /
- water-entry impact experiment /
- water-entry pressure /
- deformation mode /
- permanent deformation

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图 1 入水冲击实验装置

Figure 1. Water impact experimental device

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图 2 实验试样安装箱体

Figure 2. Installation box of test sample

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图 3 夹芯板试样三维示意图

Figure 3. Three-dimensional sketch of AHSPs

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图 4 夹具与蜂窝夹芯板安装示意图

Figure 4. Installation diagram of AHSP and fixture

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图 5 入水试样和测点位置

Figure 5. Water impact specimen and measuring point locations

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图 6 重复实验的入水冲击压力时程曲线

Figure 6. Water impact pressure time-history curves for repeated water impact tests

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图 7 重复实验的蜂窝夹芯板中剖面变形轮廓

Figure 7. Mid-section deformation profiles of AHSPs for repeated water impact tests

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图 8 蜂窝夹芯板落体入水冲击过程

Figure 8. Impact process of AHSP dropping into water

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图 9 不同落体高度下入水冲击压力时程曲线

Figure 9. Time-history curves of water impact pressure under different drop heights

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图 10 不同落体高度下压力测点的入水冲击压力峰值

Figure 10. Peak values of water impact pressure at pressure measuring points under different drop heights

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图 11 入水冲击压力峰值与落体高度的关系曲线 (AL: aluminum plate; ST: steel plate)

Figure 11. Relationship between peak value of water impact pressure and water entry velocity (AL: aluminum plate; ST: steel plate)

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图 12 入水冲击压力持续时间的定义

Figure 12. Definition of water impact pressure duration

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图 13 典型落体高度下蜂窝夹芯板与质量等效铝板入水冲击压力对比

Figure 13. Comparison of water impact pressure between AHSPs and ALs under typical drop heights

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图 14 0.6 m落体高度下蜂窝夹芯板前面板变形模式

Figure 14. Front sheet deformation of AHSPs under 0.6 m drop height

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图 15 0.8 m落体高度下蜂窝夹芯板前面板变形模式

Figure 15. Front sheet deformation of AHSPs under 0.8 m drop height

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图 16 0.6 m落体高度下蜂窝夹芯板后面板变形模式

Figure 16. Deformation of back sheet of AHSPs under 0.6 m drop height

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图 17 0.8 m落体高度下蜂窝夹芯板后面板变形模式

Figure 17. Deformation of back sheet of AHSPs under 0.8 m drop height

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图 18 典型落体高度下蜂窝夹芯板的3D扫描中剖面变形

Figure 18. Sectional deformation of AHSPs in 3D scanning under typical drop heights

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图 19 蜂窝夹芯板与等效铝板中剖面变形轮廓

Figure 19. Deformation profiles of the middle section of AHSPs and ALs

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图 20 蜂窝芯层压缩变形情况

Figure 20. Compression deformation diagram of AHSPs

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图 21 不同落体高度下蜂窝夹芯板中点最终挠度

Figure 21. Permanent deflection of the midpoint of AHSPs at different drop heights

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表 1 蜂窝夹芯板材料及尺寸

Table 1. Material properties and dimensions of AHSPs

蜂窝夹芯板	材料类型	总体尺寸/mm	有效尺寸/mm	厚度/mm	l/mm	δ_single/mm	δ_double/mm
前面板	Al 1060	350×350	250×250	0.5
芯层	Al 3003	250×250	250×250	15	15	0.04	0.08
后面板	Al 1060	350×350	250×250	0.5

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表 2 数据测量与采集系统

Table 2. Data measurement and acquisition system

测量设备	用途
M+P动态采集分析系统	P₁和P₂测点的压力时程
三维激光扫描仪	前面板和后面板的变形
高速摄像机	入水冲击箱体的实测入水速度
LED灯	实验场景补光

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表 3 入水冲击实验工况

Table 3. Cases for water impact tests

工况	h/m
1	0.4
2	0.5
3	0.6
4	0.7
5	0.8

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表 4 不同落体高度下对应的速度

Table 4. Water entry velocity under different drop heights

h/m	v_b/(m·s⁻¹)	v_a/(m·s⁻¹)	相对误差/%
0.4	2.80	2.76	1.43
0.5	3.13	3.08	1.60
0.6	3.43	3.39	1.17
0.7	3.70	3.65	1.35
0.8	3.96	3.90	1.52

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表 5 重复性实验结果

Table 5. Results of the repeated water impact tests

实验编号	压力峰值/kPa		中点最终挠度/mm
实验编号	P₁测点	P₂测点	前面板	后面板
Test-R-1	200.86	169.05	5.69	4.63
Test-R-2	204.36	168.70	5.76	4.72
Test-R-3	208.51	167.06	5.69	4.75
η/%	1.87	0.63	0.71	1.33

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表 6 不同落体高度的蜂窝夹芯板测点P₁和P₂的压力持续时间

Table 6. Pressure duration at P₁ and P₂ of AHSPs under different drop heights

h/m	测点P₁压力持续时间/ms	测点P₂压力持续时间/ms
0.4	8.93	10.32
0.5	10.55	9.11
0.6	13.36	11.20
0.7	12.15	11.63
0.8	10.86	11.68

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表 7 蜂窝夹芯板最终挠度曲线拟合相关性指标

Table 7. Correlation index of permanent deflection curve fitting of AHSPs

曲线类型	拟合方式	R²
前面板	多项式拟合-二次	0.996 73
后面板	多项式拟合-二次	0.983 53
蜂窝芯层	多项式拟合-二次	0.994 40

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