高压物理学报

The Cu-12(n-1)n Superconducting Homologous Series

JIN Chang-Qing

2003, 17(4): 241-246 . doi: 10.11858/gywlxb.2003.04.001

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Abstract:
The novel superconducting homologous series CuBa2Can-1CunO2n+2+ (i. e., Cu-12(n-1)n) have been introduced. The compounds can be synthesized only under high pressure high temperature so far. The physical properties of Cu-12(n-1)n are briefly compared with other high Tc superconductors, while the adva...

Discussions on the VLW Equation of State

LONG Xin-Ping, HE Bi, JIANG Xiao-Hua, WU Xiong

2003, 17(4): 247-254 . doi: 10.11858/gywlxb.2003.04.002

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Abstract:
The determination of the LJ potential of detonation products used in VLW EOS is introduced. The phase state of detonation product carbon under CJ condition has been discussed by comparing the calculated data with the experimental results. The main difference between VLW EOS and BKW EOS has been poin...

Numerical Simulation of One-Dimensional Instability of Detonation Wave

HONG Tao, QIN Cheng-Sen

2003, 17(4): 255-260 . doi: 10.11858/gywlxb.2003.04.003

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Abstract:
The nonlinear instability of an one-dimensional detonation wave was numerically simulated in the mixture of C2H6 and air with equivalence of 1. The influence of mesh size on the numerical results of pulsating of shock history was analyzed. Mesh size in calculation was fixed in according to the lengt...

Study of the Dynamic Response of Strain-Hardening Target in High-Velocity Impact

LIANG Long-He, CAO Ju-Zhen, LI En-Zheng

2003, 17(4): 261-267 . doi: 10.11858/gywlxb.2003.04.004

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Abstract:
A dynamic cylindrical cavity expansion penetration model for compressible, elastic-plastic, rate-independent materials with power-law strain-hardening was presented. A fortran code using this model was written. We used the code to calculate the stress distribution in the target. We also used the cod...

Improved LS Method for Capturing Compressible Fluid with Multi-Interface Interactions

BAI Jin-Song, CHEN Sen-Hua

2003, 17(4): 268-274 . doi: 10.11858/gywlxb.2003.04.005

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Abstract:
Based on the general LS method, an improved LS method for capturing compressible fluid with multi-interface interactions is given. This method can decrease the void region near the multi-interactions point, but not change the others. Both the LS equations capturing the material interface quality and...

A Study on Square Plate Dynamic Response under Underwater Explosion

WU Cheng, JIN Yan, LI Hua-Xin

2003, 17(4): 275-282 . doi: 10.11858/gywlxb.2003.04.006

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Abstract:
To obtain more precise prediction of dynamic deformation, theoretical analysis and experimental investigations were carried out on the plasticity dynamic response of clamped square plates subject to underwater explosion loading in a water tank. Based on the principle of the energy equilibrium, the m...

Effect of High Hydrostatic Pressure on Seeds Germination and Seedling Isoenzyme in Rice (Oryza sativa L.)

BAI Cheng-Ke, LI Gui-Shuang, DUAN Jun, PENG Chang-Lian, DUAN Zhong-Gang, WENG KeNan, XU Shi-Ping

2003, 17(4): 283-289 . doi: 10.11858/gywlxb.2003.04.007

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Abstract:
Three indica rice cultivars seeds, Yuexiangzhan were treated by different high hydrostatic pressure or were kept for different time. As comparison to control, both germination rate and seedling rate decreased considerably with pressure or treated time increasing. Plant growth was inhibited in treate...

VISAR Measurement on Interface Velocity between Shocked Specimen and Window

MA Yun, HU Shao-Lou, WANG Xiao-Song, CHEN Hong, LI Jia-Bo

2003, 17(4): 290-294 . doi: 10.11858/gywlxb.2003.04.008

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Abstract:
Methods and experiments of applying VISAR to measure particle velocity history at the interface between shocked Cu specimen and LiF window and LiF specimen and LiF window are described, respectively. The peak stress levels were 6.5 GPa and 3.61 GPa. Wedged LiF window was applied to smooth out the ef...

Design of Blast Chamber for Break out Affair and Its Life-Span Evaluation

DUAN Zhuo-Ping, LI Yu-Bin

2003, 17(4): 295-300 . doi: 10.11858/gywlxb.2003.04.009

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Abstract:
An evaluation method was proposed for the design and the life-span of use of blast chamber for break out affair, and the JBG series blast chambers had been designed and built up for resisting 1.0~6.0 kg TNT blast. In order to test the ability of the resistance to blasting, explosion experiment had b...

Electrical Properties and Structural Stability of Sr2FeMoxNb1-xO6 (x=0, 0.3) under High Pressure

ZHAO Xu, YU Ri-Cheng, LI Feng-Ying, LIU Zhen-Xing, BAO Zhong-Xing, TANG Gui-De, LIU Jing, JIN Chang-Qing

2003, 17(4): 301-304 . doi: 10.11858/gywlxb.2003.04.010

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Abstract:
The resistance-pressure and capacitance-pressure relationships for double perovskite compound Sr2FeMoxNb1-xO6 (x=0, 0.3) have been studied in the pressure range of 0~20 GPa using a diamond anvil cell at room temperature. The experimental results indicate that Sr2FeNbO6 undergoes a structural transit...

Dynamic Fracture and Mechanical Property of D6A, 921 and 45 Steels under Low Shock Pressure

ZHANG Lin, ZHANG Zu-Gen, QIN Xiao-Yun, PENG Jian-Xiang, CAI Ling-Cang, LI Yong-Chi

2003, 17(4): 305-310 . doi: 10.11858/gywlxb.2003.04.011

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Abstract:
The behaviors of dynamic damage and fracture of D6A, 921, 45 steels were studied via symmetric impact experiments. Using the double wave structure of the free-surface velocity profile and the material longitudinal elastic wave speed at room temperature, we obtained the D-up Hugoniot relations for th...

Synthesis and Study Status of Carbon Nitride Thin Film

SONG Yin, HOU Ming-Dong, WANG Zhi-Guang, ZHAO Zhi-Ming, DUAN Jing-Lai

2003, 17(4): 311-318 . doi: 10.11858/gywlxb.2003.04.012

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Abstract:
Carbon nitride comprises super physical and chemical properties and abroad applications. Its structure and character were reviewed, and the synthetic methods, including CVD, ion beam sputtering, laser ablation, ion plating and ion irradiation et al., were completely introduced. The perspectives of t...

Study on Microstructures and Damage Evolution of a Substitute of Polymer Bonded Explosive

ZHANG Peng, BAI Shu-Lin, ZHOU Wen-Ling

2003, 17(4): 319-325 . doi: 10.11858/gywlxb.2003.04.013

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Abstract:
A substitute of polymer bonded explosive called D-90033 was studied by using a SEM equipped with a loading system. Results indicate that the substitute is composed of two main phases, one is of grain structure, and the other lamellar structure. Under uniaxial compression, the damage and failure is c...

One-Dimensional Magneto-Hydrodynamic Simulation of Plasma Opening Switch

WANG Gang-Hua, CHEN Lin, HU Xi-Jing

2003, 17(4): 326-329 . doi: 10.11858/gywlxb.2003.04.014

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Abstract:
Preliminary results of an one-dimensional numerical code designed to investigate the magnetic field thrust effects in plasma opening switch are presented. The code is based on the magneto-hydrodynamic equations, and the current into the switch is given as a known condition. The plasma development on...

An Empirical Material Constant on the Hugoniot of Solids: From Comparative Study of Porous Materials

DAI Fu, GONG Zi-Zheng, HUANG Hai-Jun, CHEN Jun-Xiang, JING Fu-Qian

2003, 17(4): 330-335 . doi: 10.11858/gywlxb.2003.04.015

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Abstract:
From the systemically comparative study of previous experimental solid Hugoniot data of different porous samples, a new material parameter , which keeps in constant along Hugoniot for all kinds of solid materials, was revealed. For different materials, the value of is different. There exist an unive...

2003 Vol. 17, No. 4

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