高压物理学报

Surface Stress Characteristics in Pure Nickel after High Current Pulsed Electron Beam Irradiation

QIU Dong Hua, CHENG Du-Qing, GUAN Qing-Feng, ZOU Guang-Tian

2009, 23(5): 321-326 . doi: 10.11858/gywlxb.2009.05.001

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Abstract:
Polycrystalline nickel samples were irradiated with high-current pulsed electron beam (HCPEB). The induced deformation structures were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The relationship between the stress characteristics induced by HCPEB irradiation and ...

Phase Transition of Zn2SnO4 Nanowires under High Pressure

SHEN Xi, SHEN Jun, YOU Shu-Jie, YANG Liu-Xiang, TANG Ling-Yun, LI Yan-Chun, LIU Jing, YANG Hua, ZHOU Wei-Ya, JIN Chang-Qing, et al.

2009, 23(5): 327-331 . doi: 10.11858/gywlxb.2009.05.002

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Abstract:
In situ high-pressure angle dispersive X-ray diffraction (ADXRD) experiments on inverse spinel Zn2SnO4 (ZTO) nanowires were carried out in a diamond anvil cell (DAC) at room temperature. The crystal symmetry becomes lower at around 12.9 GPa and an intermediate phase occurs. At about 32.7 GPa, a phas...

An Experimental Method of Studying Underwater Explosion Bubble Oscillation

WANG Bin, ZHANG Yuan-Ping, WANG Yan-Ping

2009, 23(5): 332-337 . doi: 10.11858/gywlxb.2009.05.003

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Abstract:
Dynamics of bubble oscillation formed during underwater explosions were studied in a 2 m2 m2 m water tank. The theory of shock absorption when elastic wave transmits from high acoustic impedance material to low acoustic impedance material was used. The walls of the water tank were covered with a lay...

Wave Velocity and Attenuation Characteristics of Gabbro at 100～300 ℃ and 0.5～4.0 GPa

CHEN Zhi, DU Jian-Guo, ZHOU Wen-Ge, LIU Yong-Gang, LI Ying

2009, 23(5): 338-344 . doi: 10.11858/gywlxb.2009.05.004

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Abstract:
The variations of the elastic properties of gabbro at 100～300 ℃ and 0.5～4.0 GPa and the seismogeological application of the experimental results are discussed based on the measured wave velocities (vP,vS) and quality factors (QP,QS) of the gabbro. The values of vP,vS,QP and QS increase in the pressu...

Development of a New Fiber Coupled Optical Pyrometer

ZHOU Xian-Ming, LI Jia-Bo, WANG Xiang

2009, 23(5): 345-352 . doi: 10.11858/gywlxb.2009.05.005

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Abstract:
A fast optical pyrometer for shock temperature measurement was developed based on GDB159/142 photo-multiplier tubes (PMT) and one single optical fiber incorporated with dichroic filters. Main features include the central wavelengths within the spectrum range of 340～811 nm, a rise time of 2～3 ns, and...

Numerical Simulations on Penetration of Rod Projectiles into YB-AD90 Ceramic Targets

SUN Zhan-Feng, XU Hui, LI Ping, HE Hong-Liang, PENG Jian-Xiang, LI Da-Hong

2009, 23(5): 353-359 . doi: 10.11858/gywlxb.2009.05.006

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Abstract:
JH-2 constitutive model parameters of YB-AD90 ceramic were derived from experiments and literatures. The penetration depths and the dynamic penetration processes of rod projectiles into YB-AD90 ceramic targets were numerically simulated using Autodyn-2D. The results indicate that the simulation meth...

Numerical Simulation on Propagation of Underwater Blast Shock Wave in Absorber Structure

LI Shun-Bo, DONG Zhao-Xing, QI Yan-Jun, SUN Shu,

2009, 23(5): 360-366 . doi: 10.11858/gywlxb.2009.05.007

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Abstract:
The underwater blast shock wave in absorber structure was numerically simulated by ANSYS/LS-DYNA. The results showed that the shock waves decay in the absorption foam layer due to the effect of the constitutive of the foam material, and the peak pressure of the stress wave in the multi-layer structu...

Two-Dimensional Numerical Simulation of Explosion for Premixed CH4-O2-N2 Mixture

LI Cheng-Bing, WU Guo-Dong, JING Fu-Qian

2009, 23(5): 367-376 . doi: 10.11858/gywlxb.2009.05.008

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Abstract:
Based on the reduced methane oxidized element reaction model, CFD software and ISAT algorithm were used to establish a two-dimensional turbulent explosion model for premixed CH4-O2-N2 mixture. Computational results show that the process of ignition, combustion and explosion of the premixed CH4-O2-N2...

Effects of High Hydrostatic Pressure Treatment on Holothurians Autoenzyme Activity

XIA Yuan-Jing, LIU Zhi-Jun, LI Ning, CHEN Shu-Hua, DENG Ji-Song, LIU Xue-Wu, LI Zhi-Yi

2009, 23(5): 377-384 . doi: 10.11858/gywlxb.2009.05.009

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Abstract:
The high hydrostatic pressure treatment on sea cucumber has many advantages over traditional processes and it has a promising future. Effects of processing parameters on holothurians autoenzyme activity were investigated within the range of the parameters: the processing pressure of 0.1~550 MPa, the...

Research on the Mechanical Performance of PTFE/Al Reactive Materials

XU Song-Lin, YANG Shi-Qing, XU Wen-Tao, ZHANG Wei

2009, 23(5): 384-388 . doi: 10.11858/gywlxb.2009.05.010

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Abstract:
Reactive material is a kind of novel impact initiated energetic material. Understanding the mechanical property of reactive material is an important premise for its application. The tensile and impact properties of polytetrafluorethylene (PTFE)/Al series reactive materials were investigated experime...

Research on Hazard of Fragments from Spherical Tank BLEVE

QIAN Xin-Ming, XU Ya-Bo, LIU Zhen-Yi

2009, 23(5): 389-394 . doi: 10.11858/gywlxb.2009.05.011

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Abstract:
Domino effect is a well-known cause of major accidents in the chemical process industries, resulting in overall consequences which are more severe than those of the primary event. Fragment projection is one of the major escalation vectors to cause domino effect. The present work took a spherical tan...

An Optoelectronic Device for mm-Size Projectile Velocity Measurement

ZHAO Jun-Wei, HU Zhi-Yun, ZHAO Xin-Yan, ZHANG Xiang-Rong, QIANG Xi-Wen, ZHANG Tian-Qing

2009, 23(5): 395-400 . doi: 10.11858/gywlxb.2009.05.012

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Abstract:
A novel laser screen detection system was developed to measure the projectile's flight velocity in two-stage light gas-gun. By means of complex anti-jamming methods such as slit aperture limiting external stray light, narrow band spectrum filtering and low frequency notch filtering, the problem of d...

2009 Vol. 23, No. 5

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