高压物理学报

Physical Criterion of Dynamic Tensile Fracture

HE Hong-Liang

2013, 27(2): 153-161. doi: 10.11858/gywlxb.2013.02.001

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Abstract:
A physical criterion of dynamic tensile fracture has been introduced, based on the knowledge of the micro-mechanism and the measurement of the damage evolution. The physical criterion has suggested two critical damage parameters, named as the critical void coalescence damage Dl and the critical frac...

Time Dependence of High Pressure Induced Phase Transitions

HONG Shi-Ming

2013, 27(2): 162-167. doi: 10.11858/gywlxb.2013.02.002

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Abstract:
For investigating kinetic behavior of pressure induced phase transitions, it is the most expected to combine high time-resolved diagnostic probes with the precise compression techniques. In fact, an indirect way in large volume press is compare characterization results of recovered samples with thei...

Reviews of Recent Advances of Shock Wave Physics Applied to Earth Science in China

GONG Zi-Zheng, XIE Hong-Sen, FEI Ying-Wei

2013, 27(2): 168-187. doi: 10.11858/gywlxb.2013.02.003

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Abstract:
Academician JING Fu-Qian pioneered two new fields of shock wave physics research in China at the end of the 1980s, that are shock wave physics applied to the Earth science and to the Space science and technology, called go up to the sky and go into the Earth. Academician JING Fu-Qian led us to carry...

Structures and Properties in Typical Small-Molecule Crystals under High Pressure

JIN Xi-Lian, CUI Tian

2013, 27(2): 188-198. doi: 10.11858/gywlxb.2013.02.004

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Abstract:
High pressure can cause rearrangement of atoms in microstructure, and arouses reconfigurations of electronic states, which often brings new materials and new properties. The rich and colorful new phenomena and properties in the typical molecule system have been observed under high pressure. Studies ...

Study on the Thermal Conductivity of HMX Explosive: Method Development and Theoretical Calculation

CHEN Jun, LONG Yao, CHEN Dong-Quan

2013, 27(2): 199-204. doi: 10.11858/gywlxb.2013.02.005

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Abstract:
The theoretical calculation on thermal conductivity of explosive is still one problem. We presented our developed two calculation methods for thermal conductivity of explosive. The first one is based on atomic motion equation. We derived the formulations of thermal flux in system and thermal conduct...

Stress Transmission of Materials with Different Strengths under Non-Hydrostatic Compression

RAN Xiang-Tian, HE Duan-Wei, LIU Jing, WANG Qi-Ming, WANG Pei, WANG Jiang-Hua, CHEN Hai-Hua, PENG Fang

2013, 27(2): 205-210. doi: 10.11858/gywlxb.2013.02.006

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Abstract:
Using diamond anvil cell (DAC) combined with synchrotron axial X-ray diffraction (AXRD) techniques, the stress transmission behavior among materials with different strengths was investigated under non-hydrostatic compression. In our experiments, powder mixtures of platinum (Pt) and cubic silicon car...

Molecular Dynamic Simulation on Shock Plasticity Behaviour of Tungsten Alloy

YU Chao, REN Hui-Lan, NING Jian-Guo

2013, 27(2): 211-215. doi: 10.11858/gywlxb.2013.02.007

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Abstract:
The tungsten alloy melting behaviors under high-velocity shock loading is investigated by Molecular Dynamic (MD) method combined with Embedded Atom Method (EAM) potential of tungsten alloy. First, the shock model of tungsten alloy is set up and the numerical simulations of lattice planes (100), (110...

The 3-D Numerical Simulation for Different Explosive Charges in the Fortifications

REN Hui-Lan, NING Jian-Guo, XU Xiang-Zhao

2013, 27(2): 216-222. doi: 10.11858/gywlxb.2013.02.008

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Abstract:
The basic principle and the parallel design strategy of the PMMIC-3D parallel program which using Euler method based on the message passing interface (MPI) mode were stated. After numerically stimulating the fortification mode, it can be seen that the results of numerical stimulation basically match...

The Six over Eight Type Double Stage Large Volume High Pressure and High Temperature Facilities and Their Applications to New Materials Syntheses

LI Xiang, LIU Qing-Qing, FENG Shao-Min, ZHU Jin-Long, CHEN Liang-Chen, JIN Chang-Qing

2013, 27(2): 223-229. doi: 10.11858/gywlxb.2013.02.009

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Abstract:
High-pressure and high-temperature (HPHT) synthesis has play growing importance in exploring new materials. It has the merits of producing many new compounds that otherwise could not be synthesized at ambient conditions. The conventional HPHT facilities are based on so called one stage model reachin...

Additive Runge-Kutta Methods for Accurate H2-O2-Ar Detonation Simulation

LI Jian, HAO Li, NING Jian-Guo

2013, 27(2): 230-238. doi: 10.11858/gywlxb.2013.02.010

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Abstract:
We report here the additive Runge-Kutta methods for computing reactive Euler equations with a stiff source term, and in particular, their applications in gaseous detonation simulations. The source term in gaseous detonation is stiff due to the presence of wide range of time scales during thermal-che...

Research Progress on Ultrasonic Velocity Measurement of Liquid Materials under High Pressure

ZHANG Xin, LIU Yong-Gang, SONG Wei, WANG Zhi-Gang, XIE Hong-Sen

2013, 27(2): 239-244. doi: 10.11858/gywlxb.2013.02.011

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Abstract:
The measurement of sound velocity of materials under high temperature and high pressure (HTHP) is an important research content in high pressure science. As a fundamental physical property of liquids, velocity of sound wave in liquids is very important and useful, for many thermodynamic parameters m...

Inversion of Constitutive Parameters for Visco-Elastic Materials from Radial Velocity Measurements of Spherical Wave Experiments

LAI Hua-Wei, WANG Zhan-Jiang, YANG Li-Ming, WANG Li-Li

2013, 27(2): 245-252. doi: 10.11858/gywlxb.2013.02.012

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Abstract:
The inversion of visco-elastic constitutive relation from the measured data of a spherical wave experiment is a challenging research. Starting from the governing equations for linear visco-elastic spherical waves which are based on the ZWT visco-elastic constitutive relation, the analytical expressi...

Pressure-Induced Phase Transition of [Emim][PF6] and [Bmim][PF6] Studied by Raman Scattering

ZHU Xiang, WANG Yong-Qiang, WANG Zheng, CHENG Xue-Rui, YUAN Chao-Sheng, CHEN Zhen-Ping, SU Lei

2013, 27(2): 253-260. doi: 10.11858/gywlxb.2013.02.013

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Abstract:
In-situ pressure-induced phase transition of ionic liquids [Emim][PF6] and [Bmim][PF6] have been studied under high pressure and room temperature by using Raman spectroscopy and high-pressure diamond anvil cell (DAC) apparatus. With the increase of pressure, [Emim][PF6] experiences the solid-solid p...

High Resolution Numerical Simulation of Compressible Multi-Medium Flow

ZHAO Hai-Tao, WANG Cheng, NING Jian-Guo

2013, 27(2): 261-267. doi: 10.11858/gywlxb.2013.02.014

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Abstract:
We used high resolution 5th-order WENO (Weighted Essentially Non-Oscillatory) scheme, Level Set method and interface treatment method-RGFM (Real Ghost Fluid Method) in simulating compressible multi-medium flow with high density and high pressure ratio. Simulation of one-dimensional gas-water interac...

Temperature Calibration for the Solid Confining Media Vessel of Large-Size and Thick-Walled Piston-Cylinder Apparatus under High Temperature and Triaxial Pressure

ZHANG Yuan, WAN Zhi-Jun, ZHOU Chang-Bing, LIU Yu

2013, 27(2): 268-276. doi: 10.11858/gywlxb.2013.02.015

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Abstract:
The pressure chamber of 600 ℃ and 20 MN servo-controlled triaxial rock testing system with high temperature and high pressure has adopted the piston-thick-walled cylinder structure. Compared with normal pressure chamber, the inner diameter rises to 300 mm, the outside diameter becomes 1 060 mm and t...

Two and Three Dimensional Numerical Investigations of the Single-Mode Richtmyer-Meshkov Instability

WANG Tao, BAI Jin-Song, LI Ping, TAO Gang, JIANG Yang, ZHONG Min

2013, 27(2): 277-286. doi: 10.11858/gywlxb.2013.02.016

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Abstract:
A high precision numerical algorithm MVPPM (multi-viscous-fluid piecewise parabolic method) is proposed and applied to the multi-viscous-fluid dynamics problems. Several two and three dimensional single-mode Richtmyer-Meshkov instability models with different amplitude and wavelength are numerically...

Investigation on the Characteristic Detonation Parameters of C2H2-O2-Ar Mixtures

ZHANG Bo, BAI Chun-Hua

2013, 27(2): 287-291. doi: 10.11858/gywlxb.2013.02.017

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Abstract:
The critical initiation energy and critical tube diameter of C2H2-O2-Ar mixtures were measured in the experiment. The relationship between explosion length, which is theoretical calculated from critical energy, and detonation cell size as well as critical tube diameter was analyzed. The relationship...

Studies on the Collision of C60O Based on ab Initio Molecular Dynamics Method

LI Jian-Ying, PENG Ru-Fang, LIU Li-Min, JIN Bo, LIANG Hua, LIU Qiang-Qiang, FAN Li-Sheng, CHU Shi-Jin

2013, 27(2): 292-298. doi: 10.11858/gywlxb.2013.02.018

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Abstract:
Recently, an explosive method developed in our group shows promise to prepare He@C60 at high yield. However, the explosive process is rather complex, and much remains unknown about the interaction between fullerenens under this extreme condition. In order to unveil the physical origin of such a proc...

Optimization and Analysis of Energy Conversion Efficiency in Single Stage Pulse Induction Coilguns

LIU Wen-Biao, ZHANG Yuan, CAO Yan-Jie

2013, 27(2): 299-304. doi: 10.11858/gywlxb.2013.02.019

PDF (428)

Abstract:
In order to gain the rule between them, the mathematic model of single stage pulse induction coilguns is built, and the launch process is simulated and analyzed. The electrical-to-kinetic energy conversion efficiency of system is regarded as a target function, and the initial position of the armatur...

Experiment and Simulation of Explosion Cloud Diffusion

DUAN Zhong-Shan, LUO Yong-Feng, YUAN Wei, SHANG Ai-Guo

2013, 27(2): 305-312. doi: 10.11858/gywlxb.2013.02.020

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Abstract:
The temporal and spatial distribution of explosion cloud in diffused experiment is analyzed and studied. Cloud diffusion in the atmosphere is simulated by fluid dynamics software. Initial conditions of the cloud are optimized by calculation and experimental program. Cloud movement process rising in ...

2013 Vol. 27, No. 2

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