The electrons structure and photoelectric properties of zinc-blende structural ZnTe were investigated under high pressure, using first-principles plane-wave pseudo-potential method.The dielectric function and optical absorption coefficient were also predicted under high pressure.The results show tha...

Using a 24 mm bore two-stage light gas gun, plate impact experiments were performed on unsaturated clay at 3 moisture contents-0, 8% and 15%-to obtain its Hugoniot data.The shock wave motions in the samples were detected by fiber-optic pins, and the pressure in the sample ranged from 1.29 to 32.54 G...

In the process of projectile explosive driving, the front surface of the projectile whose thickness is larger than a certain size is usually packaged to reduce the negative pressure and prevent spalling.It is found that two negative pressures may be produced in the packaged projectile under the expl...

In order to understand the characteristics of acoustic emission signals caused by hypervelocity space debris impacting spacecraft with shields, a two-stage light gas gun was used to launch sphere projectiles to impact an aluminum-alloy Whipple shield, the induced acoustic emission signals were acqui...

Liquid fuel and RDX dust were dispersed at the same time in a detonation tube with an inner diameter of 200 mm and length of 5.4 m, and the cloud formed was initiated by high explosive from the bottom.Detonation pressure and velocity were obtained by the pressure measurement system, and photos and d...

As a promising candidate material in explosive power supplies, the porous PZT95/5 ferroelectric ceramics exhibit attractive advantages in engineering applications.However, the electrical breakdown of ferroelectric ceramics usually reduces their discharge efficiency, and even results in failure of th...

Based on the principle of massive support, the parameters of ultra-high pressure tungsten carbide (WC) anvil have been stuied by finite element method.The results indicate that the technologies of radius beveling and concave region can enhance the performence of ultra-high pressure WC anvil, by decr...

The purpose of this study is to investigate the effects of deformation-induced defects on optical transparency of MgO single crystal under shock loading.With the nanosecond-time-resolved 40-wavelength radiation pyrometer and shock-compressed in situ light source techniques, transmission spectrums of...

We adopted a new version of ghost fluid method (NGFM) to treat the wall boundary in a complex calculation region in Cartesian coordinate system, and real ghost fluid method (RGFM) to predict the flow states at grid nodes just next to the gas-liquid interface.Flow field was solved by Euler equation w...

The technique of magnetically driven isentropic compression has many advantages over previous experimental techniques of quasi-isentropic compression, such as the smoothly increasing pressure loading to a high magnitude without any initial shocks, the ability to investigate several samples under ide...

Combining the simulation with the experimental results of the penetration process of penetrator with enhanced lateral effect (PELE) in metallic target, the process of the shell expansion can be divided into two stages, the accelerating expansion and the uniform expansion.Based on the model of the da...

Stress wave propagation in the constrained explosive under shock loading was studied through simulation for the needs of both housing explosive stability in high-speed missiles and the security of weapons during accidents.The resistance forces of both missiles and housing explosive during the progre...

Deformation of perforated plates under impulsive loading of blast wave was simulated by AUTODYN software and the deflection relationship of plates with different hole numbers and diameters was obtained.Experiments were designed and the consistency between model computation and experiment results was...

A monodisperse model was introduced to simulate the TiO₂ nanoparticles synthesization during the gas phase explosion.The calculation of this model was based on the experimental results and CJ theory which describes the gas phase explosion field.After a numerical analysis and theoretical explanation,...

Thermo denatured rice protein was treated by 100 MPa for 10 min at 25 ℃ and then was hydrolyzed with Alcalase.The solubility and structural characterization of the protein and its hydrolysates were analyzed by size exclusion-high performance liquid chromatography (SE-HPLC), Fourier transform infrare...

Waxy maize and tapioca starch with different starch-water ratios were treated by high hydrostatic pressure (HHP)-a physical modification method-under 600 MPa.The effects of moisture content on gelatinization and retrogradation properties of the two kinds of starch were investigated.The appearance an...

The inactivation of pectin methylesterase (PME) from peach in buffer and juice by high pressure carbon dioxide (HPCD) was investigated.PME in buffer is effectively inactivated by HPCD, their residual activity decreases with the increase of pressure and temperature.The residual activity of the PME ex...