As an important rock-forming mineral of the rocks in the earth, garnet is one of the most important minerals in the upper mantle, transition zone and (ultra) high pressure metamorphic rocks.The study of its equation of state is therefore of great significance in laying a foundation for constraining ...

Owing to their expected capability to reach metallization within the pressure range under the present laboratory conditions, hydrogen-rich compounds are considered promising candidates for potential high-T_c (superconductor critical temperature) superconductors.Both experimental and theoretical resea...

By using the developed particle swarm optimization algorithm on the crystal structural prediction, we proposed 6 novel carbon nitride phases with a 5:1 stoichiometry.Their structures, stability, mechanical and electronic properties were investigated by first-principle calculations with the density f...

Transparent ceramics is a novel kind of inorganic non-metallic materials with a prospect of broad applications.In the present paper we present a novel method-ultra-high pressure sintering-for fabricating transparent ceramics, characterized by its low sintering temperature, short sintering time, high...

The China-made hinge-type large volume cubic press is a high-pressure device independently developed in China.After 50 years of continuous development, it has achieved fruitful results in industrial synthesis and high-pressure scientific research and occupied a special place in the world.In this pap...

As a well-known insensitive explosive, TATB has been a hot issue in the field of energetic materials due to its sensitivity and reaction characteristics.In this work, using the ab initio molecular dynamics method, we simulate the decomposition process of TATB at different temperatures and under diff...

The miniature desktop pulse laser equipment can be used to drive shock wave and load dynamic high pressure (DHP) in materials, a technique marked by its low cost, high experimental repetition frequency and ultra high loading rate.The present paper presents the work we have done so far on the desktop...

High-pressure water diffusion experiments in olivine crystal were conducted in a piston-cylinder press in the present work to investigate systematically the diffusion coefficients of water in view of changes of pressure, temperature and oxygen fugacity.It was found that diffusion coefficients increa...

The double-mode Richtmyer-Meshkov (RM) instability, when the incident shock (Ma=1.27) impacting on several groups of initial double-mode cosine interface formed by different amplitudes in initially nonuniform flows whose density is Gaussian distribution, was numerically investigated using the large-...

In the present study, to directly measure the radial strain of a metal sample loaded by the split Hopkinson pressure bar (SHPB) facility, we developed a new all-fiber displacement interferometer that could output signals of invariable strength by adopting a semiconductor optical amplifier (SOA) foll...

In this work, we propose a novel method for testing the dynamic mechanical properties of materials and for in-situ observation at ultra-high temperature (up to 1 600 ℃).The experimental devices used include a classical split Hopkinson pressure bar, a MoSi₂ heating source for obtaining ultra-high tem...

The split Hopkinson pressure bar (SHPB) tests are often conducted to obtain the dynamic compressive strengths of concrete-like materials which need to be interpreted or analyzed correctly as these data are very important for the construction of reliable constitutive equations used in numerical simul...

Based on the Hayes multi-phase equation of state, non-equilibrium phase transition rate and damage evolution rate equation, and the constitutive relation of materials, the numerical simulation method considering the phase transition and damage was proposed and then used to analyze the interaction be...

In the present study, analytical solutions were presented for the prediction of the penetration and perforation of composite glass fiber-reinforced plastic (GFRP) sandwich panels struck normally by flat-nosed cylindrical projectiles over a wide range of impacting velocities, projectile mass and core...

To study the air/water interface deformation and breakup, the water bubble and the blast waves in water, we launched a high-speed projectile using a vertical second-stage gas gun, and visualized the flow-filed close to the air/water interface using the laser shadow and schlieren photography.The imag...

To improve the axial lethality of focusing fragment warhead, we carried out a research on the axial dispersing characteristics of prefabricated fragments.Based on the Shapiro formula theory, we designed the shell and improved the charge structure of warhead, and simulated its explosion process using...

In the present work, to find out the mechanisms of the coupling effect for blast waves and fragments by fragmentation warheads exploding in the air, we developed a theoretical model by analyzing the motion patterns of the blast waves and fragments moving in the air in consideration of the influence ...

In this work we simulated the process of the jet penetrating into a target with a V-shaped reactive armor using the three dimensional finite element code (LS-DYNA), and performed the corresponding experiment to study the effect of the impact point position on the jet.The numerical simulation results...