RDX单晶炸药的冲击-斜波加载实验研究

种涛; 莫建军; 蔡进涛; 王桂吉

doi:10.11858/gywlxb.20200529

RDX单晶炸药的冲击-斜波加载实验研究

doi: 10.11858/gywlxb.20200529

中国工程物理研究院流体物理研究所，四川绵阳　621999

基金项目: 国家自然科学基金（11702276，11972031）；冲击波物理与爆轰物理重点实验室基金（6142A03192007）

详细信息

作者简介:
种　涛（1986－），男，博士，助理研究员，主要从事动高压实验加载技术和材料动力学行为研究.E-mail：maoda318@163.com

通讯作者:
蔡进涛（1984－），男，博士，副研究员，主要从事含能材料动力学特性研究.E-mail：goldennoon@163.com

中图分类号: O521.2; O347.3
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出版历程
- 收稿日期: 2020-03-12
- 修回日期: 2020-06-17

Experimental Study on Shock-Ramp Wave Profiles in RDX Single Crystal Explosive

Institute of Fluid Physics, CAEP, Mianyang 621999, Sichuan, China

摘要

摘要: 基于磁驱动加载装置CQ-4，完成了冲击-斜波复杂加载实验设计，开展了RDX单晶(210)、(100)两个晶向在不同加载压力下的冲击-斜波压缩实验，获得了RDX单晶样品与LiF窗口界面的速度历史曲线和纵波声速。实验结果显示：速度波剖面可分为冲击压缩、斜波压缩和卸载3部分；当冲击压力较高时，冲击压缩段中不再出现弹塑性转变以及4 GPa附近相变的速度特征波形；当冲击压力较低时，在冲击压缩段观测到了弹-黏塑性波形。
- RDX单晶炸药 /
- 冲击-斜波加载 /
- 弹塑性转变 /
- 斜波压缩
Abstract: The shock-ramp wave loading experiment is fulfilled using pulsed power generator CQ-4. For RDX single crystal samples with the orientations of (210) and (100), the interfacial velocity profiles between the RDX sample and LiF window are obtained by photonic Doppler velocimetry (PDV). The experimental results show that the interfacial velocity profile is divided into three parts: shock compression, ramp wave compression and unloading waves. At the shock pressure of 4 GPa, an elastic-viscoplastic waveform is observed. When the shock pressure is as high as 7 GPa, the characteristic waveform corresponding to the elastic-plastic transition disappears in the measured wave profile.
- RDX crystal /
- shock-ramp loading /
- elastic-plastic transition /
- ramp wave compression

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图 1 冲击-斜波加载实验设计示意图

Figure 1. Schematic of shock-ramp wave loading experiment

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图 2 不同晶向RDX单晶的冲击-斜波加载实验速度曲线

Figure 2. Experimental data of shock-ramp wave loading on RDX single crystals with different orientations

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图 3 RDX单晶的纵波声速与文献结果的比较

Figure 3. Comparison of the longitudinal sound speed of RDX single crystal with the results of literatures

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表 1 实验条件

Table 1. Experimental conditions

Exp. No.	Sample 1-LiF		Sample 2-LiF		Lattice orientation of RDX	U₀/kV	H₀/mm
Exp. No.	d_s/mm	Size of LiF/ (mm × mm)	d_s/mm	Size of LiF/ (mm × mm)	Lattice orientation of RDX	U₀/kV	H₀/mm
Shot 1	1.101	$\varnothing $10.0 × 4.035	1.040	$\varnothing $10.0 × 4.157	(100)	60	0.85
Shot 2	1.295	$\varnothing $10.0 × 4.042	1.208	$\varnothing $10.0 × 4.204	(100)	60	0.35
Shot 3	1.104	$\varnothing $10.0 × 4.075			(100)	50	0.17
Shot 4	1.311	$\varnothing $10.0 × 3.985			(210)	50	0.16

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