高压物理学报

High Pressure Induced Phase Transitions and Chemical Reaction of Trans, Trans-Dibenzylideneacetone

TANG Xu-Dong, ZHANG Zeng-Ming, ZHAO Zhi, WANG Zhong-Ping, DING Ze-Jun

2009, 23(6): 401-406 . doi: 10.11858/gywlxb.2009.06.001

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Abstract:
By using a diamond anvil cell the trans, trans-Dibenzylideneacetone molecular crystal was studied with high pressure Raman, fluorescence spectroscopy and EDXRD at room temperature. A crystalline to crystalline phase transition is found at 1.0~1.3 GPa; meanwhile, a pressure induced chemical reaction ...

Temperature Calibration for 3 GPa Molten Salt Medium Triaxial Pressure Vessel

HAN Liang, ZHOU Yong-Sheng, DANG Jia-Xiang, HE Chang-Rong, YAO Wen-Ming

2009, 23(6): 407-414 . doi: 10.11858/gywlxb.2009.06.002

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Abstract:
A triaxial deformation apparatus with 3 GPa molten salt medium pressure vessel was developed to study the mechanical behavior of the rock under high temperature and ultra-high pressure. It is based on the conventional Griggs design and the molten salt cell concept is after the concept of Green and B...

Detonation Synthesis of Carbon Encapsulated Cobalt/Nickel Nanoparticles

LUO Ning, LI Xiao-Jie, YAN Hong-Hao, WANG Xiao-Hong, WANG Li-He

2009, 23(6): 415-420 . doi: 10.11858/gywlxb.2009.06.003

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Abstract:
Carbon encapsulated cobalt and nickel magnetic nanoparticles have been synthesized successfully via detonation technique under nitrogen gas in explosion vessel. The gelatine dynamics are mainly made up of RDX explosive, mixed with nitrate cobalt or nitrate nickel, some orgnatic carbon materials at a...

Numerical Simulation of Explosive Particles Compaction

LIU Qun, CHEN Lang, LU Jian-Ying, ZHANG Ming

2009, 23(6): 421-426 . doi: 10.11858/gywlxb.2009.06.004

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Abstract:
Understanding the mechanics of explosives compaction can provide theoretical foundation to improve pressing technique and quality of explosive component. In this paper, a calculating model of explosive particles pressed to charge was developed. The explosive particles were considered as being the un...

Hugoniot Relation of Unreacted JOB-9003 Explosive

FU Hua, TAN Duo-Wang, LI Jin-He, LI Tao

2009, 23(6): 427-432 . doi: 10.11858/gywlxb.2009.06.005

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Abstract:
The Hugoniot relation of unreacted JOB-9003 explosive was investigated experimentally by using Particle Velocity Matching Method. The PMMA flyer is driven by detonation wave which is attenuated with a thick plate. Magnetic gauges were used to respectively record the interface particle velocity u1 be...

Numerical Analysis on Launch Property of Rarefaction Wave Gun

WANG Ying-Ze, ZHANG Xiao-Bing

2009, 23(6): 433-440 . doi: 10.11858/gywlxb.2009.06.006

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Abstract:
The launch property of the rarefaction wave gun and some influences of different factors on the launch property were studied. The two-phase flow interior ballistic model was established based on the launch mechanism of the rarefaction wave gun. The Mac-Cormack difference scheme was used in numerical...

Experimental Study on Deflagration-to-Detonation Transition in Two Pressed High-Density Explosives

WANG Jian, WEN Shang-Gang

2009, 23(6): 441-446 . doi: 10.11858/gywlxb.2009.06.007

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Abstract:
This paper deals with the experimental findings of the characteristic of deflagration-to-detonation transition in two kinds of pressed explosivesA and B. A series of tests are performed on the high-density explosives. Electrical pins and pressure sensors are used to measure the pressures and velocit...

Experimental Study on the Damage Effect of Compound Reactive Fragment Penetrating Diesel Oil Tank

XIE Chang-You, JIANG Jian-Wei, SHUAI Jun-Feng, MEN Jian-Bing, WANG Shu-You

2009, 23(6): 447-452 . doi: 10.11858/gywlxb.2009.06.008

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Abstract:
Two new kinds of compound reactive fragments were designed and prepared, and the penetration tests of the compound reactive fragments against oil tank with diesel oil were performed. The compound reactive fragment is composed of shell, bare reactive fragment and coping. Bare reactive fragments prepa...

Numerical Simulation Investigation in Hypervelocity Impact on Shield Structure Containing Aluminum Foam

JIA Bin, MA Zhi-Tao, PANG Bao-Jun

2009, 23(6): 453-459 . doi: 10.11858/gywlxb.2009.06.009

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Abstract:
Aluminum foam is a new type of material for shield of spacecrafts which bears fine characteristics when subjected to hypervelocity impact of space debris. A microstructure model of geometry for metallic foams was developed to simulate their manufacturing process. Numerical simulations on hyperveloci...

Experimental Investigation on Spherical Bubble Evolution Loaded by a Weak Planar Shock Wave

GUO Wen-Can, LIU Cang-Li, TAN Duo-Wang, LIU Jin-Hong, ZOU Li-Yong, ZHANG Guang-Sheng

2009, 23(6): 460-466 . doi: 10.11858/gywlxb.2009.06.010

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Abstract:
The interaction of a shock wave with a spherical gaseous interface (soap bubble) was observed directly by a high-speed camera. To trace the picture of the interface, white droplets were used to dye the test gas inside the bubble. Light gas bubble and heavy gas bubble under weak planar shock waves lo...

Thermodynamic Analysis of Cubic Boron Nitride Synthesized under HPHT

JI Xiao-Rui, YANG Da-Peng, YANG Xiao-Hong, ZHANG Tie-Chen, 

2009, 23(6): 467-470 . doi: 10.11858/gywlxb.2009.06.011

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Abstract:
We analyzed the relationships between growth condition and phase transition probability, and critical crystal radius respectively by thermodynamics. Then we calculated the critical grain radius rk for forming cBN crystal under high pressure and high temperature (HPHT). Under 6.0 GPa, 1 600 ℃, the rk...

High-Speed Photography and Pulsed in-Line Holography Diagnostics of Microjet

YE Yan, WANG Wei, LI Zuo-You, LI Jian, LIU Zhen-Qing, ZHONG Jie, LI Jun, SHANG Chang-Shui, LUO Zhen-Xiong, LI Xin-Zhu, LI Ze-Ren

2009, 23(6): 471-475 . doi: 10.11858/gywlxb.2009.06.012

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Abstract:
High-speed photography and pulsed in-line holography were applied in the diagnosis of microjet from shocked metal surface. Microjet loading driver, high-speed photography system, pulsed in-line holography system, and high-accuracy synchronization timing system were established. Shown as the experime...

One-Dimensional Numerical Simulation of a Flyer Accelerated by Electrically Exploded Metal Foil

HE Jia, ZHAO Jian-Heng, TAN Fu-Li, SUN Cheng-Wei

2009, 23(6): 476-480 . doi: 10.11858/gywlxb.2009.06.013

PDF (876)

Abstract:
We modified the one-dimensional hydrodynamic code named SSS for simulation of acceleration of Mylar flyer driven by electric explosion. Both simulated histories of discharging current and flyer are consistent with those of experimental results, which validates that the hydrodynamic code SSS with thi...

2009 Vol. 23, No. 6

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