Notice on the organization of advanced research class on high-pressure science and new materials of engineering knowledge of professional and technical personnel Notice on the organization of advanced research class on high-pressure science and new materials of engineering knowledge of professional and technical personnel

2009 Vol. 23, No. 2

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An Optimal Design for Planar Two-Stage Strong Detonation Driving Device
WEN Shang-Gang, SUN Cheng-Wei, ZHAO Feng, TAN Duo-Wang
2009, 23(2): 81-86 . doi: 10.11858/gywlxb.2009.02.001
PDF (938)
Abstract:
Based on the improved Gurney model for explosive acceleration, a planar two-stage strong detonation driving device has been optimized with genetic algorithm. The flyer and the explosive are steel and JO-9159, and the thicknesses of the first and the secondary flyer are 2.5 mm and 0.5 mm, respectivel...
High Pressure Synthesis and Electric Transport Properties of La Filled CoSb3 Skutterudite Thermoelectric Materials
JIANG Yi-Ping, JIA Xiao-Peng, MA Hong-An, SU Tai-Chao, DONG Nan, DENG Le
2009, 23(2): 87-90 . doi: 10.11858/gywlxb.2009.02.002
PDF (972)
Abstract:
La-filled skutterudite compounds LaxCo4Sb12 (0＜x1.0) were successfully synthesized at 3.5 GPa and 900 K. The X-ray diffraction results indicate that all synthesized samples exist as a single phase with a crystal structure of CoSb3. The composition-dependent electric transport properties of La-filled...
Thermodynamic Characteristics of Machining Insulating Engineering Ceramics with Electrical Discharge Channel
LIU Yong-Hong, YU Li-Li, XU Yu-Long, JI Ren-Jie, LI Qing-Yun
2009, 23(2): 91-97 . doi: 10.11858/gywlxb.2009.02.003
PDF (838)
Abstract:
A new technique of machining insulating engineering ceramics with instantaneous high temperature produced by electrical discharge channel (EDC) flowing insulating engineering ceramic surface is developed. The mathematical models for the temperature and thermal stress of machining insulating ceramics...
Design and Temperature Calibration for Heater Cell of Split-Sphere High Pressure Apparatus Based on the Hinge-Type Cubic-Anvil Press
CHEN Xiao-Fang, HE Duan-Wei, WANG Fu-Long, ZHANG Jian, LI Yong-Jun, FANG Lei-Ming, LEI Li, KOU Zi-Li
2009, 23(2): 98-104 . doi: 10.11858/gywlxb.2009.02.004
PDF (1189)
Abstract:
A new type of heater cell for the split-sphere high pressure apparatus based on the hinge-type cubic-anvil press was reported. This heating apparatus has the advantages of being simple, low cost, fast temperature rising, good heat insulation, and the temperature signal can be easily extracted. Carbo...
Improvement on Experiment Technique of Measuring Shear Viscosity of Aluminum under Shock Compression
LI Yi-Lei, LIU Fu-Sheng, MA Xiao-Juan, LI Yong-Hong, ZHANG Ming-Jian, ZHANG Ji-Chun
2009, 23(2): 105-110 . doi: 10.11858/gywlxb.2009.02.005
PDF (948)
Abstract:
Because there are great systematic deviations in viscosity coefficients at high pressure when measured by different experiment techniques, it is necessary to improve the experiment technique and obtain more reliable experiment data. In this paper, by the method of improvement on flyer-impact techniq...
Numerical Simulation of Dynamic Response of Concrete Subjected to Internal Load of Blast
LENG Bing-Lin, XU Jin-Yu, SUN Hui-Xiang, XU Jie
2009, 23(2): 111-116 . doi: 10.11858/gywlxb.2009.02.006
PDF (824)
Abstract:
It is still difficult to give the all-sided and accurate description of explosion damaging effects according to experiment. In this paper, by using nonlinear dynamic finite-element program ANSYS/LS-DYNA, which can deal with fluid-solid coupling algorithm, dynamic response of concrete subjected to in...
Loading and Unloading Process, Phase Transition, and Spallation in FeMnNi Alloy under High Shock-Compression
LI Qing-Zhong, CHEN Yong-Tao, TANG Tie-Gang
2009, 23(2): 117-122 . doi: 10.11858/gywlxb.2009.02.007
PDF (931)
Abstract:
Using VISAR interferometer and X-ray, phase transition and spalling behavior of FeMnNi alloy under high pressure were studied by symmetric impact and reverse impact experiments. In the loading process, the FeMnNi alloy experienced a phase transformation, the velocity of the transition was greater th...
Temperature Measurement of Laser-Induced Plasma Detonation Wave
LU Jian-Ying, CHEN Lang, WU Jun-Ying, FENG Chang-Gen
2009, 23(2): 123-129 . doi: 10.11858/gywlxb.2009.02.008
PDF (917)
Abstract:
When a highly intensive laser beam is focused into quiescent air, a laser induced plasma detonation wave is generated. The plasma temperature is an important parameter to describe the plasma detonation wave characters. It is significant to obtain the plasma temperature by experimental method for und...
The Dynamic Behavior of CO at 5 000 K and 25 GPa
LI Xiao-Feng, PENG Wei-Min, ZHAO Feng, ZHANG Yan-Li, JI Guang-Fu, CUI Hong-Ling
2009, 23(2): 130-136 . doi: 10.11858/gywlxb.2009.02.009
PDF (871)
Abstract:
The chemical reaction of CO, being one of the main explosive denotation products, was investigated at 5 000 K and 25 GPa by ab initio molecular dynamics simulations. The final products are C3O2, CO2, and C2O2. The infrared spectroscopy of the system is agreement with many theories and experiments. R...
Three-Body Interactions and Shock Compression Properties of Condensed Nitrogen
SUN Yan-Yun, LIU Fu-Sheng, ZHANG Ming-Jian, XU Li-Hua
2009, 23(2): 137-142 . doi: 10.11858/gywlxb.2009.02.010
PDF (889)
Abstract:
Based on ab initio calculation of quantum-chemical theory, the repulsive potential among three nitrogen molecules (N2)3, as well as that between two nitrogens (N2)2, were calculated for a large amount of molecular directions from randomly sampling. The molecular distance and the geometry of the cons...
Equation of state of detonation products for PETN explosive
ZHAO Yan-Hong, LIU Hai-Feng, ZHANG Gong-Mu
2009, 23(2): 143-149 . doi: 10.11858/gywlxb.2009.02.011
PDF (1065)
Abstract:
The equation of state of detonation gas products is described by Ross's modification of hard-sphere variation theory and the improved one-fluid van der Waals mixture model. The Gibbs free energy of dissociated carbon is calculated for the most probable state, which is determined by distinguishing th...
The Influence of Filter on Channel Linearity of Instantaneous Optical Pyrometer
WANG Rong-Bo, LI Ze-Ren
2009, 23(2): 150-154 . doi: 10.11858/gywlxb.2009.02.012
PDF (896)
Abstract:
Filter is an important subassembly of instantaneous optical pyrometer system, and the parameters of filter have serious influence on performance of optical pyrometer. In this paper, the influence of filter's bandpass half width, background transmittance and peak transmittance on the channel linearit...
Numerical Simulation of Extended Penetrator with Attack Angle Penetration into Spaced Targets
LI Chang-Shun, LIU Tian-Sheng, WANG Feng-Ying, GAO Yong-Hong
2009, 23(2): 155-160 . doi: 10.11858/gywlxb.2009.02.013
PDF (992)
Abstract:
The extended penetrator penetrating single layer and two-layer spaced targets with attack angle were simulated with LS-DYNA3D, which were compared to that of the baseline rod with the same mass and outer radius. The variation of kinetic energy with time were obtained for extended penetrator and base...

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