35 GPa斜波加载下RDX单晶炸药的动力学行为

种涛; 张朝辉; 王贵林; 傅华; 李涛; 随志磊; 郑贤旭

doi:10.11858/gywlxb.20210803

35 GPa斜波加载下RDX单晶炸药的动力学行为

doi: 10.11858/gywlxb.20210803

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（11772311）；科学挑战计划（TZ2016001）；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，主要从事动高压加载技术和材料动力学行为研究.E-mail：maoda318@163.com

通讯作者:
郑贤旭（1977－），男，博士，研究员，主要从事含能材料物性及实验诊断技术研究.E-mail：zxxgoal109@sina.com

中图分类号: O521.2; O347.3
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出版历程
- 收稿日期: 2021-05-26
- 修回日期: 2021-06-03
- 刊出日期: 2022-05-30

Dynamic Behaviors of RDX Single Crystal under Ramp Wave Compression up to 35 GPa

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

摘要

摘要: 利用磁驱动斜波加载10 MA装置和激光干涉测速技术，开展了35 GPa压力下(100)晶向RDX单晶炸药的斜波压缩实验，获得了RDX单晶/LiF单晶窗口界面速度数据。实验结果显示，速度波剖面表现为明显的三波结构，由低到高依次对应弹性波、塑性波和相变波，α-γ相变的起始压力为3.1 GPa。结合修正的多相状态方程和非平衡相变动力学模型，对RDX单晶炸药的斜波压缩过程开展一维流体动力学数值模拟，模拟结果与实验结果基本一致。
- RDX单晶炸药 /
- 斜波加载 /
- 弹塑性转变 /
- 相变
Abstract: A ramp wave compression experiment of (100) RDX single crystal under 35 GPa was carried out with the magnetic driven 10 MA device and laser interferometry, and then the interface velocity data of RDX single crystal/LiF window were obtained. The experimental results show that the velocity wave profile shows a three wave structure, which corresponds to elastic wave, plastic wave and phase transition wave from low to high pressure. The onset pressure of α-γ phase transition is 3.1 GPa. One dimensional hydro-dynamic simulation of ramp wave compression process of RDX single crystal was also carried out by combining the modified Hayes multi-phase equation of state and non-equilibrium phase transformation dynamic model. The calculated and experimental data are basically consistent.
- RDX single crystal /
- ramp wave loading /
- elastic-plastic transition /
- phase transition

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图 1 实验负载区布局（单位：mm）

Figure 1. Layout of loading area (Unit: mm)

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图 2 RDX单晶的斜波加载实验得到的速度曲线

Figure 2. Experimental velocity curves of RDX single crystals under ramp wave loading

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图 3 RDX单晶斜波加载实验和数值模拟得到的速度曲线

Figure 3. Experimental and simulated velocity curves of RDX single crystals under ramp wave loading

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图 4 RDX单晶的拉氏声速-粒子速度关系和压力-相对比容关系

Figure 4. Longitudinal sound velocity-partical velocity and pressure-relative specific volume of RDX single crystals

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表 1 实验条件

Table 1. Experimental condition

Component	Material	Thickness/mm	Component	Material	Thickness/mm
Plate Ⅰ	Al	0.535	Plate Ⅲ	Al	0.542
Sample Ⅰ	RDX (100)	0.560	Sample Ⅲ	RDX (100)	0.740
Window Ⅰ	LiF	8.000	Window Ⅲ	LiF	8.000
Plate Ⅱ	Al	0.533	Plate Ⅳ	Al	0.585
Sample Ⅱ	RDX (100)	0.660	Window Ⅳ	LiF	8.000
Window Ⅱ	LiF	8.000
Note: The diameter of the four windows is 12.2 mm.

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表 2 数值模型参数

Table 2. Parameters for numerical simulation

Material	τ/ns	n	Yield strength/GPa	Phase	K_ξ0/GPa	$K{_\xi} '$
RDX (100)	30	1.3	0.59	$\alpha $	13.01	7.20
RDX (100)	30	1.3	0.59	$\,\beta $	10.56	6.03

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