Test Method of Shock Hugoniot Curve of Coral Sand Based on Continuous Pressure-conducted Electrical Resistance Probe

doi:10.12382/bgxb.2024.0584

Abstract

Abstract:

Coral sand is widely used in military protection projects of islands because of its convenience and well anti-explosion buffering performance.It is necessary to obtain the shock Hugoniot data of coral sand before investigating the high-pressure shock equation of state.A shock wave test system for multi-medium is designed based on continuous pressure-conducted electrical resistance probe.The test system can be used to determine the detonation wave and shock wave time history curves of explosives,standard material and tested material in a explosion test.Then the shock Hugoniot curve of the material under test could be calculated based on the impedance matching principle.A feasibility test is carried out using water as the test material to verify the reliability of the method.Finally,the shock Hugoniot curve,represented by shock wave pressure P and particle velocity U_p, of coral sand is determined using the proposed method,which is compared with the Hugoniot data of quartz sand.The experimental results show that the shock Hugoniot curve of test material can be conveniently and reliably determined based on the continuous testing system of multi-medium shock waves and the impedance matching principle.The exploration work provides a supplement to the experimental research on the shock equation of state for large-scale heterogeneous materials.

Key words: coral sand, continuous pressure-conducted electrical resistance probe, explosive loading, shock Hugoniot curve, impedance matching

CLC Number:

O521.3

ZHANG Xuhao, LI Kebin, SUN Yuanbo, LI Xiaojie, CHEN Xiang. Test Method of Shock Hugoniot Curve of Coral Sand Based on Continuous Pressure-conducted Electrical Resistance Probe[J]. Acta Armamentarii, 2025, 46(7): 240584-.

Figures/Tables 22

References 26

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编号	炸药成分	ρ_e/ (g·cm^-3)	D_e/ (km·s^-1)	U_s1/ (km·s^-1)	U_s2/ (km·s^-1)	U_s3/ (km·s^-1)	p_C-J/ GPa
HCT-1	ANFO (粒状)	0.88	2.90	3.66	3.01	2.51	2.39
HCT-2	ANFO (粉状)	0.86	3.65	3.97	3.28	2.82	3.52
HCT-3	ANFO (粉状)	0.88	3.72	4.00	3.23	2.75	3.69
HCT-4	ANFO (粉状)	0.88	3.76	4.03	3.31	2.69	3.79
HCT-5	15%RDX+ 85%ANFO (粉状)	0.83	4.22	4.20	3.99	3.32	4.47
HCT-6	50%RDX+ 50%ANFO (粉状)	0.88	4.98	4.60	4.14	3.63	6.45

编号	炸药成分	ρ_e/ (g·cm^-3)	D_e/ (km·s^-1)	U_s1/ (km·s^-1)	U_s2/ (km·s^-1)	U_s3/ (km·s^-1)	p_C-J/ GPa
HCT-1	ANFO (粒状)	0.88	2.90	3.66	3.01	2.51	2.39
HCT-2	ANFO (粉状)	0.86	3.65	3.97	3.28	2.82	3.52
HCT-3	ANFO (粉状)	0.88	3.72	4.00	3.23	2.75	3.69
HCT-4	ANFO (粉状)	0.88	3.76	4.03	3.31	2.69	3.79
HCT-5	15%RDX+ 85%ANFO (粉状)	0.83	4.22	4.20	3.99	3.32	4.47
HCT-6	50%RDX+ 50%ANFO (粉状)	0.88	4.98	4.60	4.14	3.63	6.45

编号	入射波		透射波		与LASL 曲线的误差/%
编号	p_A/ GPa	U_PA/ (km·s^-1)	p_B/ GPa	U_PB/ (km·s^-1)	与LASL 曲线的误差/%
HCT-1	1.07	0.30	0.88	0.35	2.54
HCT-2	1.83	0.47	1.52	0.54	2.59
HCT-3	1.70	0.44	1.40	0.51	1.97
HCT-4	1.90	0.49	1.52	0.57	3.55
HCT-5	3.69	0.82	3.06	0.92	0.99
HCT-6	5.03	1.02	4.18	1.15	2.19

编号	入射波		透射波		与LASL 曲线的误差/%
编号	p_A/ GPa	U_PA/ (km·s^-1)	p_B/ GPa	U_PB/ (km·s^-1)	与LASL 曲线的误差/%
HCT-1	1.07	0.30	0.88	0.35	2.54
HCT-2	1.83	0.47	1.52	0.54	2.59
HCT-3	1.70	0.44	1.40	0.51	1.97
HCT-4	1.90	0.49	1.52	0.57	3.55
HCT-5	3.69	0.82	3.06	0.92	0.99
HCT-6	5.03	1.02	4.18	1.15	2.19

编号	珊瑚砂的质量/kg	ρ_c/(g·cm^-3)	初始孔隙比
1	3.67	1.41	0.93
2	3.65	1.44	0.89
3	3.57	1.44	0.89
4	3.41	1.40	0.94
5	3.50	1.34	1.03
6	3.55	1.37	0.98
7	3.56	1.39	0.96
8	3.80	1.40	0.94