爆炸冲击波作用下预制孔靶板塑性变形规律的研究

蒋建伟; 侯俊亮; 门建兵; 王树有

doi:10.11858/gywlxb.2014.06.013

爆炸冲击波作用下预制孔靶板塑性变形规律的研究

doi: 10.11858/gywlxb.2014.06.013

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
2.
四川航天技术研究院总体设计部，四川成都 610100

基金项目: 国家自然科学基金(11032002)；爆炸科学与技术国家重点实验室自主基金(ZDKT10-03C，ZDKT11-02)

详细信息

作者简介:
蒋建伟(1962—), 男，教授，主要从事弹药战斗部系统与仿真研究.E-mail:bitjjw@bit.edu.cn

中图分类号: O383.3
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出版历程
- 收稿日期: 2012-10-25
- 修回日期: 2013-03-05

Study on Deformation of Perforated Plates under Blast Loading

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
The General Design Department, Sichuan Academy ofAerospace Technology, Chengdu 610100, China

摘要

摘要: 利用非线性动力学软件AUTODYN，对爆炸冲击波作用下无孔及预制孔靶板的塑性变形进行了数值模拟，获得了不同孔数、孔径情况下靶板中心点挠度的变化规律；设计了模型实验，其结果与数值结果符合较好；并以爆炸冲击波作用下无孔靶板中心点挠度计算公式和数值计算结果为基础，通过拟合给出了预制孔靶板中心点挠度与孔密度、孔径之间的函数关系，该关系可为有孔平板目标的毁伤评估及破片、冲击波对平板目标联合毁伤研究提供参考。
- 爆炸冲击波 /
- 预制孔靶板 /
- 挠度 /
- 数值计算
Abstract: Deformation of perforated plates under impulsive loading of blast wave was simulated by AUTODYN software and the deflection relationship of plates with different hole numbers and diameters was obtained.Experiments were designed and the consistency between model computation and experiment results was validated.A general perforated plate deflection formula was proposed based on deflection formula of non-hole thin plate and the computation results, which can provide reference for damage estimation of perforated plate and damage study on effects of fragment and blast wave.
- blast wave /
- perforated plate /
- deflection /
- simulation

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图 1 物理模型示意图

Figure 1. Physical model

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图 2 网格模型

Figure 2. Mesh model

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图 3 数值计算模型

Figure 3. Simulation model

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图 4 实验现场布置

Figure 4. Experimental scene

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图 5 实验后的靶板状态

Figure 5. Plates after experiment

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图 6 靶板中心点挠度测量

Figure 6. Measurement of deflection

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图 7 典型时刻靶板的应力状态

Figure 7. Average Mises stress of typical plates at typical time

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图 8 典型工况靶板中心点变形量

Figure 8. Deformation of central points of typical plates

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图 9 靶板中心点挠度数值计算结果

Figure 9. Simulation results of deflection

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表 1 Q235钢材料状态方程及材料模型参数^[8-9]

Table 1. Equation of state and material parameters of Q235 steel^[8-9]

Material	Material parameter					EOS or strength model
Material	ρ/(g/cm³)	σ_s/(MPa)	E/(GPa)	Poisson ratio	S₁	Γ_ρ	C₁/(m/s)	E_t/(MPa)
Q235 steel	7.83	235	206	0.3	1.49	2.17	4 569	500

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表 2 部分实验数据与计算结果

Table 2. Results of experiment and simulation

No.	Hole number	Hole diameters/ (mm)	Deflection/(mm)		Relative error/ (%)
No.	Hole number	Hole diameters/ (mm)	Experiment	Simulation	Relative error/ (%)
1	0		72.1	68.3	5.6
2	4	4	74.2	70.2	5.7
3	4	6	76.2	70.8	7.6
4	9	4	74.3	72.4	2.6
5	9	6	78.6	73.7	6.6
6	16	4	76.2	75.3	1.2
7	16	6	81.1	78.3	3.6

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参考文献(9)

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