高速3D-DIC测试技术在装甲钢贯穿试验中的应用

程月华; 吴昊; 薛一江; 赵荣贵; 杨黎

doi:10.11883/bzycj-2022-0059

高速3D-DIC测试技术在装甲钢贯穿试验中的应用

doi: 10.11883/bzycj-2022-0059

程月华^1,,
吴昊^1, ,,
薛一江²,
赵荣贵³,
杨黎⁴

1.
同济大学土木工程学院，上海 200092
2.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
3.
南京钢铁股份有限公司，江苏南京 210035
4.
研索仪器科技（上海）有限公司，上海 201107

基金项目: 国家自然科学基金（52078379）

详细信息

作者简介:
程月华（1994－　），女，博士研究生，yhcheng@tongji.edu.cn

通讯作者:
吴　昊（1981－　），男，博士，教授，wuhaocivil@tongji.edu.cn

中图分类号: O385
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- HTML全文浏览量: 177
- PDF下载量: 171
- 被引次数: 0
出版历程
- 收稿日期: 2022-02-21
- 修回日期: 2022-06-07
- 网络出版日期: 2022-06-24
- 刊出日期: 2022-10-31

Application of high-speed 3D-DIC measurement technology in perforation test of armor steel

1.
College of Civil Engineering, Tongji University, Shanghai 200092, China
2.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
3.
Nanjing Iron & Steel Co. Ltd., Nanjing 210035, Jiangsu, China
4.
ACQTEC Instruments Technologies Ltd., Shanghai 201107, China

摘要

摘要: 数字图像相关（digital image correlation, DIC）技术作为一种非接触、非干涉的全场无损光学量测技术，可获取材料表面的动态变形信息和破坏过程。为了评估装甲钢的抗弹性能并探索高速三维数字图像相关（3D-DIC）技术在钢板贯穿试验测试中的应用，基于氢氧爆轰驱动弹道枪开展了7发15 mm口径可变形弹体以不同速度（255～568 m/s）冲击不同厚度（5、8和10 mm）高强高硬装甲钢板的试验，并结合帧率为144 000 s⁻¹的高速3D-DIC测试技术获取了靶板的离面位移和应变时程。随后，基于前期标定并验证的装甲钢本构模型参数，对上述试验进行了数值模拟。通过对比弹体残余速度和长度验证了有限元分析方法的可靠性。进一步通过对比试验与数值模拟得到的靶背离面位移时程曲线和不同时刻靶背的应变云图，验证了高速3D-DIC测试结果的准确性。最后，对比分析了靶板最大离面位移与弹体冲击速度和装甲钢板厚度的关系。高速3D-DIC测试技术的应用可为相关试验测试提供参考，靶板最大离面位移分析结果可为屏障类防护结构的分析验证和优化设计提供试验依据。
- 高速3D-DIC /
- 装甲钢 /
- 贯穿试验 /
- 残余速度 /
- 离面位移
Abstract: As a non-contact, non-interference full-field non-destructive optical measurement technology, digital image correlation (DIC) technology can obtain the dynamic deformation information on the surface of materials and failure process. Aiming to evaluate the ballistic performance of armor steel and explore the application of high-speed three-dimensional digital image correlation (3D-DIC) technology in perforation test of armor steel plates, impact tests by seven shots on high strength and hardness armor steel plates with different thicknesses were conducted, in which 15-mm-caliber deformable projectile at various velocities were fired by using hydrogen-oxygen detonation ballistic gun, whilst the high-speed 3D-DIC measurement technology with frame rate of 144000 s⁻¹ was adopted to extract the out-of-plane displacement and strain field-time histories of the target. Then, based on the calibrated and validated constitutive model parameters of armor steel obtained in previous work, the current impact test is numerically simulated and the corresponding finite element model is validated by comparing with the simulated residual projectile velocities and lengths with test data. Furthermore, by comparing the out-of-plane displacement-time histories and strain contours at the rear of target obtained by numerical simulation and test, the accuracy of results obtained by high-speed 3D-DIC is validated. Finally, the relationship between maximum out-of-plane displacement with projectile impact velocity and armor steel plate thickness is analyzed. The results show that the relatively smaller out-of-plane displacements were obtained due to the shear plugging failure for 8 mm-thick targets. Under the identical impact energy, the unperforated targets with the thickness of 10 mm absorb the most of energy and exhibit larger out-of-plane displacements compared with those in targets with the thicknesses of 5 mm and 8 mm. The application of high-speed 3D-DIC technology in this study can provide a reference for related tests, and the analysis result of maximum out-of-plane displacement of target can be used as the experimental basis for the analysis, verification and optimal design in protective barrier structures.
- high-speed 3D-DIC /
- armor steel /
- perforation test /
- residual velocity /
- out-of-plane displacement

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图 1 几何尺寸

Figure 1. Geometric dimensions

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图 2 试验现场布置

Figure 2. Test setup

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图 3 典型弹体冲击图像

Figure 3. Typical photographs of projectile impact

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图 4 标定及散斑图

Figure 4. Calibration and speckle photographs

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图 5 未发射弹体与回收弹体对比图

Figure 5. Photographs of unfired and recovered projectiles

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图 6 装甲钢靶板损伤图

Figure 6. Damages of armor steel plates

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图 7 试验1计算结果

Figure 7. Calculation results of test 1

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图 8 试验7计算结果

Figure 8. Calculation results of test 7

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图 9 有限元模型

Figure 9. Finite element model

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图 10 能量时程曲线

Figure 10. Energy-time-histories

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图 11 试验与数值模拟结果对比

Figure 11. Comparisons of test data and simulation results

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图 12 靶板离面位移时程对比

Figure 12. Comparisons of out-of-plane displacement-time histories of targets

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图 13 水平方向应变云图对比

Figure 13. Comparisons of horizontal strain contours

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图 14 垂直方向应变云图对比

Figure 14. Comparisons of vertical strain contours

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图 15 离面位移随冲击速度和靶板厚度的变化

Figure 15. Variations of out-of-plane displacements with impact velocities and target thicknesses

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表 1 试验数据

Table 1. Test data

试验	板厚/mm	v₀/(m·s⁻¹)	v_r/(m·s⁻¹)	M_r/g	L_r/mm
1	8	255	0	109.4	81
2	8	335	127	109.6	79
3	8	406	111	91.0	67
4	8	479	292	95.3	70
5	8	568	368	−	−
6	5	491	431	112.4	87
7	10	489	−	73.5	58

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表 2 三个位置点处不同时刻的离面位移

Table 2. The out-of-plane displacement of three points at various times

试验	Out-of-plane displacement/mm
	62.5 μs			125 μs			173.6 μs
	点 A	点 B	点 C	点 A	点 B	点 C	点 A	点 B	点 C
1	1.536	0.829	0.365	4.848	3.376	2.301	6.302	4.961	3.932
2	2.555	1.359	0.560	5.677	4.076	2.699	6.593	5.213	4.070
4	3.237	1.665	0.702	5.856	4.186	2.947	6.813	5.306	4.202
5	4.906	2.461	1.014	−	5.043	3.704	−	6.156	4.887
6	2.981	1.659	0.352	−	2.979	1.674	4.330	3.519	2.319
7	3.237	2.077	1.290	6.791	5.395	4.313	8.503	7.070	6.008
注：“−”表示由于散斑脱落导致无法读取位移值。

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表 3 弹靶J-C本构模型参数

Table 3. J-C constitutive model parameters of projectile and target

强度参数					损伤参数					状态方程参数
A/MPa	B/MPa	n	C	m	D₁	D₂	D₃	D₄	D₅	c/(m∙s⁻¹)	s₁	s₂，s₃	γ₀	a
1230	1647	0.4985	0.013	1.0	0.696	1.827	−2.184	−0.05	0	4578	1.33	0	1.67	0.43

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