This paper reviews the research on the equation of state (EOS) for hydrogen and deuterium in the last twenty years.A quantitative analysis of the wide-range EOS for hydrogen and deuterium is given by combining the modified chemical free energy model and the modern computational techniques such as Qu...

In this study, we developed a sample pre-heating system with the temperature range from room temperature to 180℃, matching with the magnetically driven apparatus CQ-4.The ramp wave compression experiments of bismuth under different initial temperatures (25-148℃) were carried out, using this pre-heat...

The earth was in a molten state at the beginning of its formation.Over time, the magma on the earth's surface began to cool down and solidify, and the earth has gradually become such a trap structure.However, the cooling and liquid-solid transformation process of the earth materials continues until ...

BiFeO₃ is one of the most promising multiferroics that exhibits both magnetic and ferroelectric properties above room temperature.The room-temperature structure of BiFeO₃ is a highly rhombohedrally distorted perovskite with space group R3c.In this study, we prepared BiFeO₃ powder under high temperat...

In order to obtain the Grüneisen parameter Γ of unreacted JB-9014 insensitive explosive, we carried out the one-dimensional plane impact experiment on JB-9014 explosive using a gun.In the experiment, the explosive sample was mounted between two copper plates, and two PVDF gauges were installed at th...

In this paper, the launching performance of a developed 20/57 mm two-stage light gas gun was studied, of which the driving energy is supplied by the gaseous chemical reaction.The experimental results show that the relationship between the chemical energy and the kinetic energy of the projectile can ...

In this study, magnesium oxide (MgO) doped by cobalt (Co) was prepared as pressure-transmitting medium, by solid reaction process.The starting material is a pre-compressed mixture of MgO and cobalt oxide (CoO), which was mixed for 8 h and compressed at 200 MPa, and then treated at 1 200℃.The as-prep...

To achieve efficient damage, we simulated the penetration of segmented penetrator with enhanced lateral effect (PELE) on the 4-layer metal target and analyzed the influence of projectile velocity and layer thickness on the terminal effect.The results showed that the segmented PELE projectile perform...

Based on the Donnell shell theory and classical shell theory, we established the dynamic buckling governing equation of functionally graded cylindrical shell under axial load using Hamilton principle.According to the expression of the radial displacement based on the circumferential continuity of cy...

In this research, we experimentally investigated the characteristics of the turbulent mixing zone induced by Rayleigh-Taylor (R-T) instability under different accelerations.We used the high-speed shadowgraph to study the evolution of the interface composed with the silicone oil/potassium iodide solu...

Explosively driven fragmentation of material is a highly complex phenomenon.In this study, we evaluated the influence of explosive on the intrinsic fragmentation characteristics using hollow cylindrical steel shells, and investigated a new universal assessment criteria for the fragmentation of cylin...

As the major part of the vehicle front side member, the hat-section beam structure's deformation mode and energy absorption characteristics under the axial impact is the main reference index in the design of automobile passive safety.In this study, we carried out a drop hammer axial impact test and ...

In order to study the loading characteristics of underwater explosion shock wave and bubble near the structural boundary, we designed and tested several plate models.By changing the ratio of stand-off to the maximum bubble radius, the flat thickness and other parameters, we analyzed the bubble pulsa...

With the wide application of high strength and high impact-resistant steel structures in armor protection of armor, arsenal protective doors and other military facilities, the impact-resistant properties of steel structures become a major focus and hot spot in defense research.In this paper, we simu...

To study the penetration performance of different shapes of a DU alloy fragment, we performed an experiment on a Q235B steel target with a thickness of 20 mm and obtained its terminal ballistic marriage parameters of cylindrical DU alloy fragment penetration.Then, we carried out the corresponding si...

The extraction of rigid-body deceleration characteristic plays a significant role in the research of anti-hard-target weapons and related areas.In this paper, we investigated the methods of processing on-board recorded penetration deceleration data.The intrinsic mode functions were separated from th...

In this paper, we numerically studied the ballistic resistance of the metal perforated armor to the high-velocity projectile, and analyzed in detail the effects of various factors on its ballistic resistance, including the impact velocity, the oblique angle, the hitting location and the size of hole...

In this work, the three-dimensional finite element analysis software LS-DYNA was used to numerically simulate the ballistic performance of explosive reactive armor at different impact points, and the comparative experiments were also carried out in order to obtain the protective envelope of the expl...

The structural optimization design of filament winding housing for a railgun barrel is introduced.The thickness of fiber laminates, the winding angle and the stacking sequence of fibers for a 50 mm circular bore composite barrel are investigated for structural optimization.Numerical simulation of ra...

Using a pulse decay permeameter, we conducted a combination of laboratory experiments to study permeability evolution of marine-terrigenous facies coal measures shale under reservoir conditions, and obtained the permeability of coal measures shale under different stress states, and furthermore analy...