高压物理学报

High Pressure Induced Transformations in One-Dimensional Carbon Nanomaterials

YAO Ming-Guang, DU Ming-Run, ZHU Lu-Yao, LIU Bing-Bing

2013, 27(6): 793-801. doi: 10.11858/gywlxb.2013.06.001

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Abstract:
High pressure studies on one-dimensional (1D) carbon nanomaterials can provide deep insight into the new properties of carbon nanomaterials, which is also important for the fabrication of 1D superhard carbon nanomaterials. Here we present our recent research progress on high pressure studies of 1D c...

Effects of the Vacancy Point-Defect on Electronic Structure and Optical Properties of Diamond under High Pressure

HE Lin, YIN Jun

2013, 27(6): 802-806. doi: 10.11858/gywlxb.2013.06.002

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Abstract:
By ultra-soft pseudo-potential approach of the plane wave based on the density-functional theory, the electronic structures and optical properties of diamond without and with vacancy point-defects were calculated at 255 GPa. The calculated results show that: at a shock pressure of 255 GPa, shock-ind...

Precise Control Technique for Flatness of Flyer under Explosive Loading

JIN Ke, XI Feng, TAN Ye, LIU Xiao-Hai, DAI Cheng-Da, CAI Ling-Cang, WU Qiang

2013, 27(6): 807-812. doi: 10.11858/gywlxb.2013.06.003

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Abstract:
Based on the effective charge length model, the flyer flatness under explosive loading is improved by increasing the thickness of the attenuation plate gradually along radial orientation. The experimental results show that the difference of shock wave front arrival time is less than 80 ns within a r...

Material Point Method for Numerical Simulation of Underwater Explosion Blast Wave

CHEN Wei-Dong, YANG Wen-Miao, ZHANG Fan

2013, 27(6): 813-820. doi: 10.11858/gywlxb.2013.06.004

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Abstract:
Underwater explosive load calculation and numerical simulation are the key issues of the design of underwater conventional weapons and protection of ships and submarine. Numerical simulation of underwater explosions involves large deformation, the moving material interface and multi-media coupling. ...

Comparison of Methods for High-Pressure Dynamic Yield Strength Measurement

YU Yu-Ying, TAN Hua, DAI Cheng-Da, PENG Jian-Xiang, LI Xue-Mei, HU Chang-Ming, TAN Ye

2013, 27(6): 821-827. doi: 10.11858/gywlxb.2013.06.005

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Abstract:
The four widely used methods to measure the high-pressure dynamic yield strength of solids, including Asay-Chhabildas (AC) method, lateral stress gauge (LSG) method, pressure-shear (PS) method, and X-ray diffraction (XRD) method, were analyzed in the present work. According to the difference of inst...

X-Ray Diffraction Investigation of Chalcopyrite under High Pressure and Temperature

FAN Da-Wei, WEI Shu-Yi, LIU Jing, XIE Hong-Sen

2013, 27(6): 828-832. doi: 10.11858/gywlxb.2013.06.006

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Abstract:
In situ angle dispersive X-ray diffraction measurements for a natural chalcopyrite were performed by using heating diamond anvil cell instrument with synchrotron radiation at BSRF up to 32.0 GPa and 628 K. The phase transition of chalcopyrite from chalcopyrite structure to rocksalt structure is arou...

Numerical Studies on the Oblique Penetration Behavior of the Projectile with Cutting Mechanism into a Steel Target

GUO Liu-Wei, TAN Duo-Wang

2013, 27(6): 833-838. doi: 10.11858/gywlxb.2013.06.007

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Abstract:
The penetration behavior is very important for the semi-armor-piercing warhead. The oblique penetration behavior of the projectile with cutting mechanism was studied numerically by using the finite element code LS-DYNA. The penetration performance of the projectiles with and without cutting mechanis...

Calculation and Analysis for the Anti-Penetration Performance of Explosively Welded Steel/Aluminum Plates Target by the Penetration of Spherical Projectile

ZHOU Nan, WANG Jin-Xiang, XIE Jun, DONG Gang

2013, 27(6): 839-846. doi: 10.11858/gywlxb.2013.06.008

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Abstract:
A series of penetration-experiments were performed to investigate the anti-penetration performance of two and three layers explosively welded steel/aluminum and steel/aluminum/steel targets, the 14.5 mm slip chamber gun was used to launch the spherical steel projectile with diameter of 6 mm in the e...

Numerical Simulation of Dynamic Fracture Toughness Test Using Three-Point Bending Specimen in SHPB

PAN Jian-Hua, CHEN Xue-Dong

2013, 27(6): 856-862. doi: 10.11858/gywlxb.2013.06.010

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Abstract:
This paper examines 3D and 2D numerical simulations of dynamic fracture toughness test using TPB specimen in SHPB by using commercial code ABAQUS 6.8 and 3D fracture mechanics code ZENCRACK 7.7. The finite element model includes the whole experimental device (the projectile, the input bar, the speci...

Meso-Scale Numerical Simulation of the Shock Compression of Particle Metal Materials

QIAO Liang, ZHANG Xian-Feng, HE Yong, SHI An-Shun, ZHANG Jiang

2013, 27(6): 863-871. doi: 10.11858/gywlxb.2013.06.011

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Abstract:
Meso-scale characteristics of particle metal materials (PMM) play an important role in determining its macro-scale mechanical property. In order to investigate relationship between meso-scale characters (particle size, distribution, morphology, porosity) and macro-scale mechanical property, a FEM me...

Simulations of Seismic Waves Stimulated by Aluminized Explosive

ZENG Yi-Xin, BAI Chun-Hua, CHEN Jian, WANG Zhong-Qi

2013, 27(6): 872-876. doi: 10.11858/gywlxb.2013.06.012

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Abstract:
In order to study the propagation of seismic waves stimulated by aluminized explosives, the commercial software-AutoDyn was used, in combination with Miller energy release model, to simulate the explosion in the sand. The results of simulation agreed well with the experiment: 0.7 kg aluminized explo...

Theoretical Considerations on the Temperature Rise of Shaped Charge Particle Jet

中北大学化工与环境学院, 山西太原, 中国科技大学近代力学系, 安徽合肥

2013, 27(6): 877-883. doi: 10.11858/gywlxb.2013.06.013

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Abstract:
To estimate theoretically the temperature rise of shaped charge particle jet, the temperature rise was calculated based on the equation of state of the porous material determined. The temperature rise includes heating due to the shock wave transferred into the porous liner by the explosive detonatio...

Experimental Study on Dynamic Behavior of the Collision Region of Lead Tube Driven by Cylinderical Implosion

ZHANG Chong-Yu, HU Hai-Bo, LI Qing-Zhong

2013, 27(6): 884-888. doi: 10.11858/gywlxb.2013.06.014

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Abstract:
Dynamic behaviors of the collision region of lead tube driven by cylinderical implosion were experimentally investigated by high-speed frame photography and pulsed X-ray radiography. Experimental results showed that a leading jet-like spiking happened in the collision region, and the spiking demonst...

Simulation Analysis on Structure Safety of Refuge Chamber Door under Explosion Load

LUO Xing-Na, HUANG Ping, QIAN Xin-Ming

2013, 27(6): 889-896. doi: 10.11858/gywlxb.2013.06.015

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Abstract:
The door of coal mine mobile refuge chamber should keep strong structure during its life cycle. A basic structure of the door was designed. And finite element models of the door were established for numerical simulation, with thickness 10, 20, and 25 mm, respectively. Finite element software ANSYS/L...

Asay-F-Window Applied to Diagnostic of Micro-Spall Phenomena

CHEN Yong-Tao, REN Guo-Wu, TANG Tie-Gang, LI Qing-Zhong, WANG De-Tian, HU Hai-Bo

2013, 27(6): 897-900. doi: 10.11858/gywlxb.2013.06.016

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Abstract:
Quantitative data on micro-spall fragments production from metals melted on shock or release are sparse because of diagnostic limitations. In this study, a new diagnostic technology Asay-F-Window was designed, and the mass-velocity distribution of micro-spall fragments was presented. By comparing th...

Measurement of Solid Armature's in Bore Velocity Using B-Dot Probes in Series Enhanced Railgun

CHENG Cheng, GUAN Yong-Chao, HE Yong, GAO Gui-Shan, LI Ye-Xun, QIU Xu, SONG Sheng-Yi

2013, 27(6): 901-907. doi: 10.11858/gywlxb.2013.06.017

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Abstract:
The solid armatures displacement and velocity can be obtained by arranging B-dot probe arrays along the barrel of a series enhanced railgun. The moment of armature arrival can be determined by an evident change in the differential signals of B-dot probes while armature passing by. However, it is dif...

Synthesis of the Single Crystal of MgSiO3 Perovskite in Capsules with Different Lengths

XU Jun-Shan, WU Xiao-Ping

2013, 27(6): 908-914. doi: 10.11858/gywlxb.2013.06.018

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Abstract:
MgSiO3 perovskite is the most abundant material in the Earths lower mantle. It is very difficult to obtain single crystal of MgSiO3 perovskite due to its high pressure stability over 22 GPa. Thus synthesis of MgSiO3 perovskite, especially the large grain size single crystal, is extremely important t...

Experimental Investigation on the Ballistic Performance of 45 Steel Metal Plates Subjected to Impact by Hemispherical-Nosed Projectiles

DENG Yun-Fei, ZHANG Wei, CAO Zong-Sheng

2013, 27(6): 915-920. doi: 10.11858/gywlxb.2013.06.019

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Abstract:
A series of impact tests were conducted to investigate the ballistic performances of single, double- and three-layered 45 steel plates subjected to impact by hemispherical-nosed projectiles which were made from 38CrSi and diameter was 12.7 mm, the impact velocities ranged from 240 m/s to 600 m/s. Th...

Improved Quasi- Function Pulse Pressure Dynamic Calibration of High-Pressure Transducer

ZHANG Yu, ZU Jing, ZHANG Hong-Yan

2013, 27(6): 921-927. doi: 10.11858/gywlxb.2013.06.020

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Abstract:
Based on the analysis of shortcomings existed in quasi- function calibration method, a dynamic calibration method was proposed. In this method, a pressure sensor was under high static pressure in advance, and then a bullet was used to impact Hopkinson bar for generating a quasi- function signal with...

Study on the Effects of Composite Armor with Corrugated Sandwich against the Shaped Charge Jet Penetration

ZHANG Zhong-Wen, HUANG Zheng-Xiang, ZU Xu-Dong, JIA Xin

2013, 27(6): 928-935. doi: 10.11858/gywlxb.2013.06.021

PDF (442)

Abstract:
The anti-penetration property of the corrugated sandwich composite armor with the corrugation angle of 45 in different penetration angles was studied. The performance of the armors filled with rubber and without rubber was studied, based on the energy loss, DOP and quality protection factor consider...

Effects of Dynamic High-Pressure Microfluidization Treatment on Vitamin C, the Total Polyphenol Content and the Antioxidant Activity of Pineapple Juice

LI Ti, LI Qian, XU Jin-Long, LIU Cheng-Mei, WANG Zhao-Yun

2013, 27(6): 936-941. doi: 10.11858/gywlxb.2013.06.022

PDF (484)

Abstract:
The effect of dynamic high-pressure microfluidization (DHPM) treatment on vitamin C, the total polyphenol content and the antioxidant activity of fresh pineapple juice was studied. Results indicated that the vitamin C content decreased after DHPM treatment. Under the pressure of 30 MPa, the loss of ...

Effect of the Pressure on Iron Magnetic Resonance and Faraday Rotation in Ce:YIG

YANG Dan, ZHANG Guo-Ying, HU Feng, CHEN Hui, HUANG Yi-Jia

2013, 27(6): 942-945. doi: 10.11858/gywlxb.2013.06.023

PDF (484)

Abstract:
The variations of the damping coefficient and molecule field with the pressure are investigated, and the quantitative forms are given in Ce:YIG crystal. The variations of the line width of iron magnetic resonance and the magneto-optic Faraday rotations with the pressure are presented. The calculated...

2013 Vol. 27, No. 6

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