ZrCuNiAlAg块体非晶合金JH-2模型研究

石永相; 施冬梅; 李文钊; 余志统; 尚春明

doi:10.11883/bzycj-2018-0221

ZrCuNiAlAg块体非晶合金JH-2模型研究

doi: 10.11883/bzycj-2018-0221

1.
西北核技术研究所，陕西西安 710024
2.
陆军工程大学石家庄校区，河北石家庄 050003

详细信息

作者简介:
石永相（1992－　），男，硕士，助理工程师，2536973141@qq.com

通讯作者:
施冬梅（1967－　），女，博士，副教授，13383013059@163.com

中图分类号: O345
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- 被引次数: 0
出版历程
- 收稿日期: 2018-06-20
- 修回日期: 2019-07-04
- 刊出日期: 2019-09-01

Study on JH-2 model of the ZrCuNiAlAg bulk amorphous alloy

1.
Northwest Institute of Nuclear Techno logy, Xi’an 710024, Shaanxi, China
2.
Shijiazhuang Campus, Army Engineering University, Shijiazhuang 050003, Hebei, China

摘要

摘要: 为了更好的进行ZrCuNiAlAg块体非晶合金药型罩的爆炸成形及侵彻仿真研究，首要就是建立其材料模型。本文结合ZrCuNiAlAg块体非晶合金力学性能试验结果计算得到了材料的JH-2模型参数，研究确定了ZrCuNiAlAg块体非晶合金JH-2模型。为了验证ZrCuNiAlAg块体非晶合金JH-2模型的准确性，采用Autodyn建立了平板撞击试验有限元模型，模拟了ZrCuNiAlAg块体非晶合金材料在高压、高应变率等环境条件下的变形过程，仿真计算得到的靶板背面自由面粒子速度与试验结果相比，速度平均偏差均在3%以内，表明ZrCuNiAlAg块体非晶合金JH-2模型能很好的描述该材料在大变形、高应变率、高压等环境条件下的力学行为，验证了ZrCuNiAlAg块体非晶合金JH-2模型准确性。
- ZrCuNiAlAg块体非晶合金 /
- JH-2模型 /
- Autodyn /
- 有限元
Abstract: It is very important to establish the material model for the explosive forming and penetration simulation of ZrCuNiAlAg bulk amorphous alloy. In this paper, the JH-2 model parameters of the ZrCuNiAlAg bulk amorphous alloy were calculated by the experimental results. In order to verify the accuracy of the ZrCuNiAlAg bulk amorphous alloy JH-2 model, the finite element model of plate impact test was established by Autodyn. The deformation process of ZrCuNiAlAg bulk amorphous alloy under high pressure and high strain rate was simulated. Compared with the experimental results, the average velocity deviation of the free surface particles on the back surface of the target plate is less than 3%. It is shown that the JH-2 model of ZrCuNiAlAg bulk amorphous alloy can well describe the mechanical behavior of the material under large deformation, high strain rate, high pressure and other environmental conditions, and the accuracy of JH-2 model of ZrCuNiAlAg bulk amorphous alloy is verified.
- ZrCuNiAlAg bulk amorphous alloy /
- JH-2 model /
- Autodyn /
- finite element

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图 1 压缩试样断裂前后

Figure 1. Before and after fracture of compressed specimens

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图 2 真实应力-应变曲线

Figure 2. Real stress-strain curves

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图 3 动态应力应变曲线

Figure 3. Dynamic stress-strain curve

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图 4 飞片及靶板

Figure 4. Flyer and target

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图 5 自由面粒子速度历史

Figure 5. Velocity history of free surface particles

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图 6 D-u曲线

Figure 6. D-u curve

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图 7 p-μ曲线

Figure 7. p-μ curve

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图 8 σ₁/σ₂-p的变化曲线

Figure 8. σ₁/σ₂-p curve

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图 9 有限元模型

Figure 9. Finite element model

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图 10 A点速度时间曲线

Figure 10. The velocity-time curve of point A

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表 1 SHPB试验结果

Table 1. SHPB test results

气压/MPa	应变率/s⁻¹	原始尺寸/mm	整形片整形片尺寸/mm	压缩强度/GPa
0.17	600	3.84×3.61	10×10×0.25	1.06
0.22	2214	3.81×3.64	10×10×0.25	1.25
0.30	2783	3.85×3.61	10×10×0.25	1.46
0.35	3129	3.82×3.63	10×10×0.25	1.59

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表 2 压缩力学性能试验结果

Table 2. Test results of compressive mechanical properties

试验编号	$\dot \varepsilon $/s⁻¹	σ/GPa	p/GPa	σ^*	p^*
CMT#1	4×10⁻²	1.23	0.407	0.211	0.071
CMT#2	4×10⁻²	1.24	0.409	0.213	0.072
CMT#3	4×10⁻²	1.24	0.416	0.213	0.072
SHPB#1	2 214	1.25	0.418	0.215	0.073
SHPB#2	2 783	1.46	0.489	0.251	0.086
SHPB#3	3 129	1.59	0.529	0.273	0.093
SHPB#4	3 132	1.64	0.571	0.282	0.100

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表 3 块体非晶合金碎片准静态压缩试验结果

Table 3. Quasi-static compression test results for bulk amorphous alloy fragments

试验编号	$\dot \varepsilon $/s⁻¹	σ/GPa	p/GPa	σ^*	p^*
1	1×10⁻²	1.26	0.42	0.216	0.074
2	2×10⁻²	1.41	0.43	0.242	0.075

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表 4 ZrCuNiAlAg块体非晶合金材料模型参数

Table 4. Material model parameters

ρ/(g·cm⁻³)	A₁/kPa	A₂/kPa	A₃/kPa	D₁	N	C
6.581	2.303×10⁹	4.716×10¹⁰	8.873×10¹¹	0.005	1.153	0.094

T₁/kPa	A	B	σ_HEL/kPa	D₂	M	G/kPa
2.303×10⁹	0.296	1.03	5.82×10⁶	1	0.383	3.704×10⁶

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表 5 计算与试验结果对比

Table 5. Comparisons between calculated results and experimental results

试验编号	试验速度/(m·s⁻¹)	计算速度/(m·s⁻¹)	误差/%
1	350	340	2.9
2	390	379	2.8
3	439	427	2.7
4	502	489	2.6
5	550	535	2.7

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