Room temperature ionic liquid, which is viewed as a kind of super green solvent, has broad application prospect in industrial production.In this paper, the intrinsic relationship between the condensed structures and properties of room temperature ionic liquids under high pressure has been reviewed i...

Heat conduction property of minerals and rocks at high temperature and high pressure is important information to understand the dynamic mechanism, temperature distribution and the thermal evolution history of the Earth.Measurements of the thermal diffusivity of minerals and rocks at high temperature...

The first principle method based on the density functional theory is applied to study the equation of state of Au.The ground state calculation shows that the LDA (local-density approximation) potential is a more accurate exchange-correlation potential.The equation of state of Au over the density and...

The results of split Hopkinson pressure bar (SHPB) and quasi-static compression tests for aluminum foam at different strain rates and temperatures are used to explore its constitutive relation.It is revealed that there is a coupling of the temperature effect and the strain rate effect, namely the hi...

Theory predicts that B-C-N compounds may exist in many structural forms and have excellent physical properties.Synthesis of such materials is attracting the attentions of scientists.A two-stage light-gas gun and the corresponding shock-recovery technology were applied to explore the synthesis condit...

Using a self-designed measuring device, the argon density has been measured at 300 K for pressure lower than 60 MPa.The second and third virial coefficients are obtained by fitting the experimental data, and the new parameters of Lennard-Jones potential are derived from the experimental virial coeff...

The physical processes, including input and output pressures of explosive, reaction zone propagation caused by low amplitude shock, are tested by PVDF gauge and high-speed photography.The shock propagation image and the course of input pressure in explosive with different attenuator thickness are ga...

To evaluate the hazard of combined gaseous epoxypropane-aluminum dust explosions, a 5 L spherical exploding device was used to measure the lower limit of explosion densities of aluminum dust in aluminum dust-air mixtures and gaseous epoxypropane-aluminum dust-air hybrid mixtures, and gaseous epoxypr...

Flame front with high temperature is one of the most main hazardous factors during indoor deflagration accidents of natural gas.Spread range of flame front reflects the hazardous region and the severity of this kind of accidents in a great degree.Combined with one indoor natural gas deflagration acc...

A high-velocity earth-penetrating structural projectile is designed, and experiments of projectiles with mass of 0.15 and 1.5 kg and impact velocity ranging from 1 030 to 1 630 m/s are carried out.The projectile structural response, mass loss and critical survival velocity for projectile in high-vel...

For special requirements of penetrating multi-layer steel target, a design of explosively formed projectile (EFP) and its experimental study have been carried out.A compressed EFP assembly with a 60 mm diameter of liner has been designed using the curved variable thickness liner design.The shape and...

Aimed at the requirement of large hole diameter and deep penetration depth of tandem warhead precursor charge, by using LS-DYNA finite element software and orthogonal optimal design method, the influence law of the liner and foam structural parameters of K-charge on the formation of the shaped jet w...

In order to solve the problem about fast perforation of hunk fraise with enough depth and width, a new tandem shaped charge structure is proposed, which is composed of two same structure of EFP (explosively formed projectile) shaped charge.Using finite element software LS-DYNA3D, the forming process...

While testing the strength of a rescue cabin under blasting, the door and other special structures of the underground coal mine rescue cabin are usually simplified to shorten the time of calculation.When the rescue cabin is attacked by blasting, the large deformation or failure frequently occurred i...

In order to reflect the temperature rise process on the sliding electrical contact interface exactly, a numerical model of imperfect electrical contact (ImPEC) during hypervelocity sliding in electromagnetic railgun is developed.The model is implemented with finite difference method, and the thermal...

In order to study the dispersion of solid particle under the loading of shock tube, a numerical simulation of the dispersion of quartz sand with a mass of 5 g and different diameters of 2.00-3.00 mm, 0.80-1.10 mm and 0.42 mm respectively was carried out by means of DPM (dispersion phase model) of FL...

An experimental testing technique with light screens is developed to measure the velocity and distribution of warhead fragments, especially small fragments.The basic theory and main principle of the light screens were discussed, and dynamic experiments were designed and carried out to test the veloc...

According to the dynamic characteristics of a new capacitive high bore pressure tester, which is decided by the vibration characteristics of the pressure tester shell subjected to pressure, the dynamic model of the tester shell under external pressure was established, and the dynamic properties of t...

The objective of this work was to study the effects of fermentation with lactic acid bacteria and dynamic high pressure microfluidization (DHPM) on physicochemical properties of dietary fiber in soybean residue.The results showed that fermentation and DHPM produced an increase of soluble dietary fib...

The qualities changes of carrot juice treated by high hydrostatic pressure (HHP, 600 MPa, 5 min) and thermal process (95 ℃, 5 min), as well as in storage at 4 and 27 ℃, were studied.The results show that L, a, b and ΔE increase significantly (P < 0.05) after thermal process, botha value and ΔE of...