水下冲击波载荷作用下气背固支圆板动态毁伤实验

任鹏; 田阿利; 张伟; 黄威

doi:10.11883/1001-1455(2016)05-0617-08

水下冲击波载荷作用下气背固支圆板动态毁伤实验

doi: 10.11883/1001-1455(2016)05-0617-08

任鹏^1,,
田阿利¹,
张伟²,
黄威²

1.
江苏科技大学船舶与海洋工程学院，江苏镇江 212000
2.
哈尔滨工业大学高速撞击研究中心，黑龙江哈尔滨 150080

基金项目:

国家自然科学基金项目 51509115

江苏省船舶先进设计制造技术重点实验室开放课题项目 CJ1502

详细信息

作者简介:
任鹏(1984-)，男，博士，讲师，r_peng@126.com

中图分类号: O347.3
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出版历程
- 收稿日期: 2014-11-10
- 修回日期: 2014-12-30
- 刊出日期: 2016-09-25

Failure mode of clamped air-back circular panel subjected to underwater shock loading

1.
School of Naval Architecture & Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China
2.
Hypervelocity Impact Research Center, Harbin Institute of Technology, Harbin 150080, China

摘要

摘要: 为了研究水下近爆载荷作用下舰艇水下结构的动态变形及失效毁伤模式，利用水下爆炸冲击波等效加载装置结合高速摄影技术，对两种厚度的气背固支5A06铝合金圆板进行了水下冲击波加载实验。得到了气背固支圆板塑性大变形、中心拉伸撕裂和边界剪切破坏3种典型失效模式的动态响应历程。比较分析了冲击波强度、冲击因子、损伤参数和响应参数4种毁伤判据对该类靶板毁伤模式的判别能力。实验结果表明：考虑了结构因素的损伤参数和响应参数能够更为全面的判别结构的失效毁伤情况。
- 固体力学 /
- 水下冲击波 /
- 气背圆板 /
- 动态毁伤 /
- 失效准则
Abstract: In this paper, the dynamic deformation and failure mode of 5A06 aluminum alloy clamped air-backed circular panels with two different thicknesses subjected to underwater shock loading were investigated using the non-explosive underwater shock loading device in combination with high-speed photography. The dynamic response history of the target panels was observed with more information about their failure modes obtained, and three modes of deformation and failure were identified, i. e. Mode Ⅰ (large plastic deformation), Mode Ⅱ (tensile tearing) and Mode Ⅲ (shear-off failure). According to the experimental results, the performance of four kinds of failure criteria (i. e. shock wave pressure, impulsive factor, damage parameter, and response parameter) on predicting the failure modes of the target panels was compared and analyzed. The experimental results showed that the damage and failure of underwater structures can be more comprehensively judged by taking account of the damage parameter and the response parameter of the target.
- solid mechanics /
- underwater shock wave loading /
- air-back circular panel /
- dynamic damage /
- failure criterion

HTML全文

图 1 非药式水下爆炸冲击波加载实验装置

Figure 1. Experimental set-up of non-explosive underwater shock loading

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图 2 测试靶板装配图

Figure 2. Sketch of specimen panel

下载: 全尺寸图片幻灯片

图 3 靶板Ⅰ型(弯曲拉伸)失效的动态响应历程

Figure 3. History of Mode Ⅰ (large plastic deformation) dynamic response of target panel

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图 4 靶板Ⅱ型(花瓣式)失效的动态响应历程

Figure 4. History of Mode Ⅱ (tensile tearing) dynamic response of target panel

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图 5 靶板Ⅲ型(剪切)失效的动态响应历程

Figure 5. History of Mode Ⅲ (tensile tearing) dynamic response of target panel

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图 6 气背靶板的典型失效模式

Figure 6. Typical failure mode of air-back target panel

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图 7 失效判据与失效模式间的关系

Figure 7. Failure criterion vs. failure mode

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表 1 各损伤失效判据及实验结果比较

Table 1. Comparison of failure mode criteria with experimental results

Exp No.	t/mm	p/MPa	f^*/(kg^1/2·m^-1)	n_d	n_r	(δ/R)_max	失效模式
1	2.0	34.35	0.25	3.92	1 066	0.11	Ⅰ
2	2.0	61.83	0.45	12.44	3 386	0.22	Ⅰ
3	2.0	93.64	0.67	28.14	7 859	0.30	Ⅰ
4	0.5	18.32	0.13	18.20	79 289	0.14	Ⅰ
5	0.5	33.27	0.24	58.84	256 305	0.27	Ⅰ
6	0.5	41.18	0.29	89.50	389 860	0.37	Ⅰ
7	0.5	60.40	0.44	190.08	827 973	-	Ⅱ
8	0.5	80.13	0.58	331.37	1 443 460	-	Ⅱ
9	0.5	130.15	0.92	860.06	3 746 441	-	Ⅲ
10	0.5	143.14	1.02	1 036.99	4 517 136	-	Ⅲ

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