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

2012 Vol. 26, No. 1

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Damage Characteristics of Rear Walls of Aluminum Whipple Shields by Oblique Hypervelocity Impact of Aluminum Spheres
GUAN Gong-Shun, HA Yue, PANG Bao-Jun
2012, 26(1): 1-6. doi: 10.11858/gywlxb.2012.01.001
PDF (545)
Abstract:
In order to simulate and study the oblique hypervelocity impacts of space debris on bumper of spacecrafts, a series of oblique hypervelocity impact experiments of aluminum Whipple shields are carried out by a two-stage light gas gun. The aluminum alloy projectile diameter is 3.97 mm, the impact velo...
Debris Cloud Characteristics of Non-Spherical Projectile Based on Characteristic Length
XU Kun-Bo, GONG Zi-Zheng, HOU Ming-Qiang, ZHENG Jian-Dong, YANG Ji-Yun
2012, 26(1): 7-17. doi: 10.11858/gywlxb.2012.01.002
PDF (533)
Abstract:
The effects of non-spherical projectile shape on hypervelocity impact are investigated for the cube and flake projectiles, which are the typical shapes of orbital debris in ORDEM2000 and Standard Breakup Model (SBM), by using AUTODYN-3D hydrocode simulations. The characteristics of the debris clouds...
Mechanical Characteristics of C-SiC Composite Dual-Wall Shield Structure Subjected to Hypervelocity Impact
SHI Jiao-Hong, LI Yu-Long, LIU Yuan-Yong, SUO Tao
2012, 26(1): 18-26. doi: 10.11858/gywlxb.2012.01.003
PDF (605)
Abstract:
C-SiC composite is a new type of material which is being developed with aerospace technology. C-SiC composite possesses excellent properties and can satisfy the requirements of spacecraft protection system. Therefore it is very significant to study the mechanical behavior of C-SiC composite subjecte...
An in Situ Electrical Conductivity Measurement System in Diamond Anvil Cell
LI Ming, YANG Jie, YANG Wu-Ming, WANG Hui-Xin, LI Li-Xin, GAO Chun-Xiao
2012, 26(1): 27-32. doi: 10.11858/gywlxb.2012.01.004
PDF (621)
Abstract:
In situ resistance measurement in a diamond anvil cell under high pressure and high temperature will be restricted by the thermal insulation. If the ordinary powder heat insulating material is used, it is difficult to introduce the electrode and measure resistance accurately. Here the in situ resist...
Crystallization Behavior of Polyamide 1010-Single-Walled Carbon Nanotube Nanocomposites under High Pressure
WANG Biao, ZHENG You-Jin, JIA Xiao-Peng, MA Hong-An, ZHANG Xue-Quan
2012, 26(1): 33-40. doi: 10.11858/gywlxb.2012.01.005
PDF (590)
Abstract:
The PA1010 (polyamide 1010)-SWCNT (single-walled carbon nanotube) nanocomposites crystallized at different temperatures and pressures for 30 min are prepared by an XKY-61200MN type high-pressure apparatus. The structure, crystallization behavior and morphological feature of high-pressure crystallize...
Equation of State of Solid Neon from Quantum Calculation
WU Na, TIAN Chun-Ling, LIU Fu-Sheng, KUANG An-Nong, YUAN Hong-Kuan, ZHENG Xing-Rong
2012, 26(1): 41-47. doi: 10.11858/gywlxb.2012.01.006
PDF (495)
Abstract:
The interaction energy for fcc-neon-crystals at high pressure is calculated by Hartree-Fock method and the atomic cluster theory. The two- and three-body contributions to the static energy are also studied. Incorporating the influence of the zero-point vibration, the equations of state of fcc neon a...
Combined Engraving Process of C-Shaped Solid Armature in Electromagnetic Railgun
ZHANG Yi, YANG Chun-Xia, LI Bao-Ming
2012, 26(1): 48-54. doi: 10.11858/gywlxb.2012.01.007
PDF (616)
Abstract:
In order to meet the requirement for initial contact pressure between armature and rails of electromagnetic railgun, by taking the engraving process of C-shaped armature in small caliber electromagnetic railgun as the research object, three engraving modes including uniform loading, impact loading a...
Experimental Investigation of the Influence of Highly Argon Dilution on the Critical Initiation Energy for Direct Initiation of C2H2-2.5O2 Mixtures
ZHANG Bo, Lee John H S, BAI Chun-Hua
2012, 26(1): 55-62. doi: 10.11858/gywlxb.2012.01.008
PDF (523)
Abstract:
Direct initiation is achieved via a high voltage capacitor spark discharge, and the critical energy is accurately estimated from the analysis of the current output. A good agreement is found by comparing the critical initiation energy from experimental measurement and Lee's surface energy model. The...
A Dynamic Friction Analysis Method of Charge Survivability during Supersonic Penetration of Concrete Targets
ZHANG Xu, CAO Ren-Yi, TAN Duo-Wang
2012, 26(1): 63-68. doi: 10.11858/gywlxb.2012.01.009
PDF (602)
Abstract:
Based on the assumption of elastic deformation of charge, a novel theoretical analysis method for charge survivability in the process of penetration is proposed by using relative displacement between projectile body and internal charge, friction work, hot spot theory, and principle of thermal dynami...
An Experimental Study of Thin Steel Plates Perforated by Conical-Nosed Projectiles
SUN Wei-Hai, JU Gui-Ling, CHEN De-Min, YANG Ban-Quan
2012, 26(1): 69-75. doi: 10.11858/gywlxb.2012.01.010
PDF (448)
Abstract:
Both quasi-static and impact loading experiments of thin steel plates are performed using conical-nosed projectiles with cone angle of 90. Load-deflection curves and different failure modes are acquired from the quasi-static tests. Membrane analysis and plastic collapse model with pure bending are i...
Numerical Simulation on the Effect of Surface Concrete Layer on Inner Explosion of Runway
KANG Yan-Long, JIANG Jian-Wei, WANG Shu-You, MEN Jian-Bing
2012, 26(1): 76-82. doi: 10.11858/gywlxb.2012.01.011
PDF (495)
Abstract:
The explosion damage of runway is numerical simulated using a hydro code of AUTODYN based on TCK damage model considering tensile failure. The effects of charge and surface concrete layer thickness on the explosion crater diameter are obtained when the detonation is at the bottom of surface concrete...
An Abrasion Algorithm for Ogive-Nose Steel Projectile Penetrating Concrete Target
YANG Yang, HE Tao, WEN He-Ming
2012, 26(1): 83-88. doi: 10.11858/gywlxb.2012.01.012
PDF (594)
Abstract:
A finite difference program is developed to predict the mass loss, nose shape change, and penetration depth of a steel projectile which penetrates into concrete targets based on the modified empirical equation of nose surface abrasion velocity and the assumption that the density of the projectile is...
Numerical Simulation Analysis of Particle Impacting Breaking Rock
REN Jian-Hua, XU Yi-Ji, ZHAO Jian, ZHAO Xu-Long, ZHANG Meng
2012, 26(1): 89-94. doi: 10.11858/gywlxb.2012.01.013
PDF (682)
Abstract:
The three-dimensional nonlinear dynamics of particle impacting breaking rock is simulated with LS-DYNA3D. The energy conversion curves and the process of rock breaking under steel particle are obtained, and the mechanism of rock breaking is also analyzed. The simulation results agree with the experi...
Overpressure Comparison of Blasting in Air and Special-Made Hemispherical Structure
QU Yan-Dong, YAN Hong-Hao, LI Xiao-Jie, LIU Hua-Xin
2012, 26(1): 95-101. doi: 10.11858/gywlxb.2012.01.014
PDF (655)
Abstract:
The explosive welding process always accompanies with explosive vibration, shock waves, overpressure, hazardous gases and noises. A method of designing a hemispherical structure with 36 m in diameter, whose entrance and smoke extraction opening are 8 m in height and 8 m in diameter respectively, is ...
Mathematical Model and Numerical Simulation of Two-Phase Flow Interior Ballistics of Variable Burning-Rate Propellant
MA Zhong-Liang, LIU Lin-Lin, XIAO Zhong-Liang
2012, 26(1): 102-106. doi: 10.11858/gywlxb.2012.01.015
PDF (584)
Abstract:
In order to describe the combustion and interior ballistics processes of variable burning-rate propellant more accurately, the model of two-phase flow interior ballistics of variable burning-rate propellant is established, which consists of one center hole and double layers. In the charge condition ...
1 064 nm Laser Damage on Indium Tin Oxide Films
LI Yang-Long, WANG Wei-Ping, LUO Yong-Quan, WANG Hai-Feng, ZHANG Da-Yong
2012, 26(1): 107-112. doi: 10.11858/gywlxb.2012.01.016
PDF (552)
Abstract:
Liquid crystal optical elements have important applications in laser facility, and the indium tin oxide (ITO) films are generally used in liquid crystal optical elements as transparent conductive electrodes. Laser induced damage of ITO films leads to failure of liquid crystal optical elements. The l...
Numerical Simulation of Microchannel of Dynamic High-Pressure Microfluidization Based on FLUENT
LIU Wei, LI Huo-Kun, LIU Cheng-Mei, LIU Wei-Lin
2012, 26(1): 113-120. doi: 10.11858/gywlxb.2012.01.017
PDF (545)
Abstract:
In order to analyze the flow field within the microchannel of dynamic high-pressure microfluidization, the geometric model and mesh model are established, and the pressure and velocity distributions of the flow field in interactive chamber are obtained with SIMPLEC solution algorithm and RNG k- mode...

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