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

2005 Vol. 19, No. 4

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Measurement of Radiation Temperature in Hohlraum with Shock Wave Method on 'Shenguang Ⅱ' Laser Facility
JIANG Shao-En, LI Wen-Hong, SUN Ke-Xi, JIANG Xiao-Hua, LIU Yong-Gang, CUI Yan-Li, CHEN Jiu-Sen, DING Yong-Kun, ZHENG Zhi-Jian
2005, 19(4): 289-292 . doi: 10.11858/gywlxb.2005.04.001
PDF (809)
Abstract:
The D shaped cavity has been used to measure the radiation temperature in Hollraum on Shenguang Ⅱ laser facility. The radiation temperature was measured using two methods. One method measured the shock wave velocity produced in low-Z materials such as Al driven by the emission from hohlraum. The sho...
Elastic P Wave Velocity and Attenuation in Dunite up to 4.0 GPa
LIU Wei, DU Jian-Guo, XIE Hong-Sen, ZHOU Wen-Ge, GUO Jie
2005, 19(4): 293-298 . doi: 10.11858/gywlxb.2005.04.002
PDF (931)
Abstract:
Elastic P wave velocity (vP) and quality factor value (QP, on behalf of attenuation) of dunite are determined using ultrasonic pulse transmission and spectral ratio methods in a multi-anvil apparatus up to 4.0 GPa at room temperature. During the experimental pressure range (0.4~4.0 GPa), vP and QP i...
The Application of Quartz Transducer Technique in SHPB
LIN Yu-Liang, LU Fang-Yun, LU Li
2005, 19(4): 299-304 . doi: 10.11858/gywlxb.2005.04.003
PDF (907)
Abstract:
During testing low impedance materials (so-called soft materials) by a conventional split Hopkinson pressure bar (SHPB), the transmission strain pulse is too weak to be collected correctly. In addition, the soft material specimen will not deform homogeneously during the testing, which makes it impos...
Pressure Induced Rice Mutation and ISSR Analysis of the Mutants
XU Shi-Ping, GUO Li-Xiu, WENG Ke-Nan, DUAN Jun, Lü Guang-Cai
2005, 19(4): 305-311 . doi: 10.11858/gywlxb.2005.04.004
PDF (832)
Abstract:
After up to 10 generations of purification by strict self-fertilizing, seeds of two rice varieties (Oryza sativa L.), Yuexiangzhan and Bijing-38 were treated with high hydrostatic pressure during last 5 years, and 5 contemporaneous mutants and 4 descendant natural mutants were obtained with high rep...
The Damage Evolution Equation and the Spallation Criterion of Al-Li Alloy
GUO Yang, LI Yong-Chi, CAO Jie-Dong, LI Jian-Guang
2005, 19(4): 312-318 . doi: 10.11858/gywlxb.2005.04.005
PDF (816)
Abstract:
The spallation experiments of Al-Li alloy have been carried out and the free surface velocity temporal curves for the spallation events have been measured. Based on the microscopics statistics and phenomenological analysis, a damage evolution equation is developed, which involves the effects of the ...
Propagation of Stress wave and Spallation of Cylindrical Tube under External Explosive Loading
SUN Yu-Xin, ZHANG Jin, LI Yong-Chi, HU Shi-Sheng, DONG Jie
2005, 19(4): 319-324 . doi: 10.11858/gywlxb.2005.04.006
PDF (719)
Abstract:
The deformation and spalling behavior of the cylindrical steel tube under external explosive loading was studied. On the basis of the damage evolution equations and considering damage and temperature softening effects, we obtained the explicit plastic constitutive relations. Numerical simulations we...
A Numerical Simulation to Dynamic Buckling of Magnetically Imploding Liner
SONG Sheng-Yi, CHEN Gang
2005, 19(4): 325-330 . doi: 10.11858/gywlxb.2005.04.007
PDF (777)
Abstract:
With the aid of instant nonlinear finite element method, a numerical simulation to dynamic buckling of the implosion liner driven by magnetic pressure has been carried out. The principle of the method and the results of simulation has been introduced and discussed. The comparison of simulation resul...
Pressure Effects on the Elastic Properties of the hcp Lithuim
CHEN Chang-Bo, CUI Tian, LIU Zhi-Ming, ZOU Guang-Tian, WEI Meng-Fu, CHEN Chang-An
2005, 19(4): 331-336 . doi: 10.11858/gywlxb.2005.04.008
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Abstract:
The elastic constants of bulk lithium with hexagonal close-packed (hcp) structure under high pressures have been calculated, by using Density Functional Theory and the relationship between stress and strain. From our results, C12 and C13 increase linearly with pressures, but pressure effects on C44 ...
Micro-Failure Mechanism Analysis and Test Study for Rock Failure Surface under Water Jet Impact
LI Gen-Sheng, LIAO Hua-Lin
2005, 19(4): 337-342 . doi: 10.11858/gywlxb.2005.04.009
PDF (781)
Abstract:
The rock breaking mechanism by water jets impact has not been clearly recognized as yet for complicated process of rock damage. The test of cutting rocks with submerged high-pressure water jets impact by a numerical controlling jet cutting machine are conducted. Then, the test for the pattern of fai...
Analysis of Two Stages Explosive/Flyer System
WEN Shang-Gang, DENG Wen-Rong, ZHAO Feng, SUN Cheng-Wei
2005, 19(4): 343-347 . doi: 10.11858/gywlxb.2005.04.010
PDF (762)
Abstract:
The driving abilities of strong detonation in two stages explosive/flyer system have been studied by both analysis and experiments. Under certain condition, the system's geometric parameters are optimized in order to drive final flyer to high speed. The abilities of strongly detonating explosive sla...
Contribution of Lattice Vibration and Hot Electron to the Shock Compression Behavior of Porous Metal
YANG Mei-Xia, LIU Fu-Sheng, SUN Yu-Huai, ZHANG Dai-Yu
2005, 19(4): 348-352 . doi: 10.11858/gywlxb.2005.04.011
PDF (839)
Abstract:
Based on the Debye mode, electron gas model, and Grneisen equation of sate, new formula were deduced which describe the individual contributions of lattice vibration and hot electron to shock temperature, shock pressure and compression volume of porous metals. It is found that the contribution of la...
Density-Functional Calculation of the EOS and Adiabatic Elastic Properties for Solid Argon
MENG Chuan-Min, JI Guang-Fu, HUANG Hai-Jun
2005, 19(4): 353-356 . doi: 10.11858/gywlxb.2005.04.012
PDF (778)
Abstract:
DFT-LDA method has been performed on calculations for fcc structure solid agon. The equation of state and adiabatic elastic properties of solid argon has been calculated up to 82 GPa. The results are in good agreement with the experimental data. The calculation indicates that the elastic properties ...
Pressure Induced Phase Transition of Nano Zinc Sulfide Shell
WANG Lin, LIU Bing-Bing, WANG Hui, HOU Yuan-Yuan, AI Xiao-Lei, PAN Yue-Wu, CUI Qi-Liang, ZOU Guang-Tian, LIU Hong-Jiang, NI Yong-Hong, et al.
2005, 19(4): 357-360 . doi: 10.11858/gywlxb.2005.04.013
PDF (742)
Abstract:
In situ energy dispersive X-ray diffraction measurements on nano zinc sulfide shell have been carried out by using diamond anvil cell with synchrotron radiation. The highest pressure is 33.3 GPa in the experiment. The raw materials contain two structures of ZnS, which are wurtzite and zinc blende re...
Simulating the Dynamic Release Behavior of Copper
PENG Jian-Xiang, ZHOU Xian-Ming, SONG Ping, ZHANG Lin, WANG Li-Li, JING Fu-Qian
2005, 19(4): 361-364 . doi: 10.11858/gywlxb.2005.04.014
PDF (842)
Abstract:
The dynamic release behavior of OFHC copper under 10~20 GPa shock pressure was simulated by using the Johnson-Cook (JC) constitutive model and Steinberg-Cochran-Guinan (SCG) constitutive model, respectively. Comparisons between the simulations and the experimental results show that the strain rate e...
Melting Temperatures of OFHC Copper under Shock Compression Measured by Optical Radiometry Techniques
ZHANG Ling-Yun, DAI Cheng-Da, XU Can-Hua, TAN Hua
2005, 19(4): 365-370 . doi: 10.11858/gywlxb.2005.04.015
PDF (769)
Abstract:
Melting temperatures of OFHC (Oxygen-Free High Conductivity) copper at pressures ranging from 110 GPa to 140 GPa were measured on a two-stage light-gas gun by optical radiometry techniques and using LiF single crystal as window, based on such a conclusion that the melting temperatures at the sample/...
Stability of n-Pentane under High Pressure
QIAO Er-Wei, ZHENG Hai-Fei
2005, 19(4): 371-376 . doi: 10.11858/gywlxb.2005.04.016
PDF (735)
Abstract:
Raman scattering spectroscopy was used to investigate stability of n-pentane in Moissanite anvil cell from 0.07 GPa up to 4.77 GPa at ambient temperature. The result shows that CH3 symmetric and asymmetric stretching vibration, CH2 symmetric and asymmetric stretching vibration and －(CH2)n － in-phase...
First-Principle Calculation of the Static Structure and Phase Transition of Aluminium
HOU Yong, ZHANG Dong-Wen, YUAN Jian-Min
2005, 19(4): 377-380 . doi: 10.11858/gywlxb.2005.04.017
PDF (850)
Abstract:
In the framework of density functional theory, the static structure properties and phase transition of aluminium are calculated using the augmented plane wave plus local orbitals (APW+lo) method with generalized gradient approximation (GGA) for the exchang-correlation energy. The critical values for...
Structural Stability and Electrical Properties of CMR Material Sr2CrWO6 under High Pressure
LI Jian-Ru, YANG Liu-Xiang, LI Jie, YU Ri-Cheng, LI Feng-Ying, BAO Zhong-Xing, LIU Jing, JIN Chang-Qing
2005, 19(4): 381-384 . doi: 10.11858/gywlxb.2005.04.018
PDF (857)
Abstract:
The spectra of energy dispersive X-ray diffraction with synchrotron radiation of double perovskite compound Sr2CrWO6 have been studied in situ high pressure pressure up to 34.5 GPa using a diamond anvil cell at room temperature. The experimental results indicate that the sample undergoes a crystal s...
Application of the Coupling Method in Simulating the Hypervelocity Impact
WU Yu-Yu, HE Yuan-Hang, LI Jin-Zhu
2005, 19(4): 385-389 . doi: 10.11858/gywlxb.2005.04.019
PDF (720)
Abstract:
Compared to the traditional numerical methods, meshless SPH method is more suitable to simulate the hypervelocity impact in that it can simulate the material interface clearly and overcome the numerical instability due to the large mesh deformation in the Lagrange method. In SPH, in order to get the...
Introduction of the 4th International Symposium on Supercritical Fluid Technology for Energy, Environment and Electronics Applications
SU Lei
2005, 19(4): 390-392 . doi: 10.11858/gywlxb.2005.04.020
PDF (781)
Abstract:
The 4th International Symposium on Supercritical Fluid Technology for Energy, Environment and Electronics Applications was introduced in this report. Progresses on supercritical fluid technology for energy, environment and electronics applications in recent years was described, respectively.

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