高压物理学报

Experiments and Numerical Simulations of Bullet Impact Tests for Explosives with Shell

WU Jun-Ying, WANG De-Wu, CHEN Lang, WANG Shu-Shan, HAN Xiu-Feng

2010, 24(6): 401-408 . doi: 10.11858/gywlxb.2010.06.001

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Abstract:
HL-10 explosive is an aluminized explosive based on RDX. In order to investigate the safety characteristics of HL-10 for bullet impact test, 12.7 mm bullet was used to impact HL-10 charge. Experimental results show that there is no significant reaction or burning resulted from these bullet impact te...

Acoustic Emission Dynamic Characteristics of Growth Process of Diamond Single Crystals under HPHT

LIU Lei, ZHANG Yuan-Pei, WANG Feng, CHEN Chong, LI Mu-Sen

2010, 24(6): 409-414 . doi: 10.11858/gywlxb.2010.06.002

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Abstract:
The growth process of synthetic diamond single crystals under high-pressure and high-temperature (HPHT) was tested with acoustic emission technique. Associated with the fracture morphologies of the synthetic mass, the main acoustic emission dynamic parameters corresponding to growth process of diamo...

Numerical Simulations on the Thrust Performance of Nozzles and Detonation Propulsion of a Sudden Area Change Tube

ZHANG Huan-Hao, CHEN Zhi-Hua, SUN Xiao-Hui, FAN Bao-Chun

2010, 24(6): 415-422 . doi: 10.11858/gywlxb.2010.06.003

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Abstract:
Based on the homogenous fluid reaction N-S equations, the k- turbulent model and the EBU combustion model, the propagation of detonation wave in a sudden area change tube and the influences on the thrust performance of the main tube with different nozzles were investigated. Our results show that, a ...

Investigation into Charge Height Ratio of Micro-Detonator on the Output Detonation Pressure

HE Ai-Jun, YAN Nan, FU Shu-Ling, GENG Wan-Jun

2010, 24(6): 423-430 . doi: 10.11858/gywlxb.2010.06.004

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Abstract:
In order to accommodate to the needs of micro-explosive train in MEMS fuze, this paper carried out a specific study about the influence of charge height on the output detonation pressure in micro-detonator. The charge diameter is 0.9 mm, total height is 3 mm. The charge ratio of primary explosive an...

Study on the Shock Wave Attenuation of the Booster Charge in the PMMA Gap

XU Sen, LIU Da-Bin, PENG Jin-Hua, WANG Jian-Ling, GUO Wei, JIN Peng-Gang, JIA Xian-Zheng

2010, 24(6): 431-437 . doi: 10.11858/gywlxb.2010.06.005

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Abstract:
The shock pressure at the interface between booster charge and PMMA gap was calculated by graphing method. The AUTODYN was used to simulate the attenuation process of the shock wave in the PMMA gap. The output shock pressures, which were produced by the substituted booster charge of the UN gap test,...

Study on the Agglomerate Structures of TiO2 Nanoparticles

QU Yan-Dong, LI Xiao-Jie, LIU Yuan

2010, 24(6): 438-442 . doi: 10.11858/gywlxb.2010.06.006

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Abstract:
The short duration of high temperature and high pressure during the detonation process made the TiO2 nanoparticles not have enough time to grow into large and fine crystallites and only generate a large number of spherical-like nanoparticles. The rapid interactions between these formed TiO2 nanopart...

Research on Pyrotechnic Composition Combustion Underwater and Its Effective Acting Time

OUYANG De-Hua, GUAN Hua, PAN Gong-Pei, DU Xue-Feng, XIAO Gui-Lin

2010, 24(6): 443-448 . doi: 10.11858/gywlxb.2010.06.007

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Abstract:
The defining of effective acting time for pyrotechnic composition combustion underwater was put forward. The main problems of current methods for testing and processing the acoustic radiation characteristics of pyrotechnic composition combustion underwater and explosion underwater were analyzed. And...

First-Principles Calculation of ZnS Doped with Mn or Fe

LI Sheng-Zhi, LIU Jin-Chao, YANG Xiang-Dong, GUO Yan-Feng, XU Hai-Quan

2010, 24(6): 449-454 . doi: 10.11858/gywlxb.2010.06.008

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Abstract:
The electronic structure and optical properties of pure and Mn-doped or Fe-doped zinc blende ZnS were calculated by first-principles ultra-soft pseudopotential approach of the plane wave based upon the density functional theory, and the band structure, density of states and optical absorption proper...

Magnetically Driven Quasi-Isentropic Compression Experiments of Solid Explosives

CAI Jin-Tao, WANG Gui-Ji, ZHAO Jian-Heng, MO Jian-Jun, WENG Ji-Dong, WU Gang, ZHAO Feng

2010, 24(6): 455-460 . doi: 10.11858/gywlxb.2010.06.009

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Abstract:
It is very important and instructive for us to further and accurately investigate the interaction between constitutes of explosive and formation mechanism of hot spots in explosive initiation, with the constitutive relation and equation of states in wide pressure zone. Compared with shock compressio...

Texture and Structural Defect Evolution of Pure Nickel Subjected to High-Current Pulse Electron Beam Irradiation

LI Yan, GU Qian-Qian, QIU Dong-Hua, PENG Dong-Jin, GUAN Qing-Feng

2010, 24(6): 461-466 . doi: 10.11858/gywlxb.2010.06.010

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Abstract:
The specimens of polycrystalline nickel were irradiated with high-current pulsed electron beam (HCPEB). Surface textures and structural defects of irradiated nickel were investigated by using X-ray diffraction (XRD) and transmission electron microscopy (TEM). The XRD results show that the characteri...

Technique for Measuring Transmittance of Optical Windows under Dynamic Loading and Its Application

LI Yong-Hong, LIU Fu-Sheng, CHENG Xiao-Li, MA Hai-Yun, ZHANG Ming-Jian, XUE Xue-Dong

2010, 24(6): 467-471 . doi: 10.11858/gywlxb.2010.06.011

PDF (666)

Abstract:
A measurement technique for optical transmittance of window material under gas-gun-driven shock loading condition was developed, in which a pulsed light source of semiconductor laser was mounted in the projectile and along its central axis to measure the transmittance change of transparent sample du...

Effect of High Hydrostatic Pressure on Starch Structure and Gelatinization

LIU Pei-Ling, ZHANG Fu-Sheng, BAI Yun-Fei, HU Xiao-Song, SHEN Qun

2010, 24(6): 472-480 . doi: 10.11858/gywlxb.2010.06.012

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Abstract:
While most current studies of high hydrostatic pressure are for starches, there is evidence that high pressure can induce modification and gelatinization of some starches. Over 25 starches were investigated by high hydrostatic pressure. Different starches respond differently to applied high pressure...

2010 Vol. 24, No. 6

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