In this work we prepared sample primary material for synthesis of jadeite jade adopting the sol-gel method, reduced the bubbles in it by melting it many times at high temperature and, after it, obtained bulk transparent glass materials containing the jade chemical component (NaAlSi₂O₆). In order to ...

PbTe is the only thermoelectric material that has been commercially used for power generation in the medium temperature. It has been found that the n-type PbTe with high performance can be synthesized by high pressure method, but so far there has been no report on similarly prepared p-type PbTe, whi...

An equation-of-state (EOS) calculation model was presented for a multi-component mixture by assuming that all components of the mixture are in a locally thermodynamic equilibrium state, which means that they are isothermal and isobaric, and that the sub-volume of each component is additive. Thermody...

Laser interferometry for measuring velocities and wedge-shaped test explosive were used to study the Hugoniot of unreacted insensitive high explosive JBO-9021 and, on the basis of the wedge-shaped design, the velocities of the particles and the shock wave under different pressures were obtained from...

The Richtmyer-Meshkov (RM) instability in a twice-shocked heavy gas (SF₆) cylinder surrounded by ambient air is experimentally studied using the particle image velocimetry (PIV) technique, and the velocity and vorticity fields as well as the circulation of the flow are quantitatively characterized. ...

The classic front tracking (FT) method, using the segments between the tracer points to represent the interface and the interface motion is simulated by the movement of tracer points, is valued for its typical high precision, but it is unable to deal with interfaces which have complex topological ch...

A constitutive model based on ice particulate-reinforced material is developed to visually describe the dynamic mechanical properties and the stress-strain relationship of frozen soil. In view of the fact that soil breaks layer by layer under impact loading, we brought the strain rate into considera...

In the present work the dynamic response of the V-shaped aluminum foam sandwich panel and that of the flat panel under blast loading were simulated using the dynamic explicit algorithm based on the three-dimensional nonlinear program LS-DYNA. In our simulation the deflection of the panel faces, the ...

In order to quantitatively and comparatively investigate the transient responses of cylindrical shells induced by moving and simultaneous impulsive loads, we studied in this work the law of average strain difference varying with geometric parameters by numerical simulations where the two kinds of lo...

In order to explore an expression formula for the stress undergone by the nose of the projectile during cratering in the process of penetration, penetration performance in the surface layer of the concrete target was analyzed using the stress wave damage theory.The crater-forming mechanism was expla...

The movement state of a flyer driven by two head-on colliding detonation waves is an important problem in weapon physics, about which, up to now, experimental studies have mostly focused on the external characteristics of collision behavior in the later evolution period but, in spite of the strong c...

A good understanding of the temporal and spatial distribution characteristics of the railgun contact heat is an important basis upon which to suppress armature melting, design the rails cooling system, and control the thermal management.In this work, based on the calculation models of the contact pr...

An armature is the key component in the device for energy exchange in an electromagnetic coil launcher (EMCL).In this work, in view of their working principle and structural characteristics, mathematical models of the induction solid armature launcher (ISAL), induction coil armature launcher (ICAL),...

When the equation of state (EOS) and physical parameters of the projectile and the target plate materials are unknown, it is impossible to estimate accurately the peak value and the pulse width of the shock wave pressure on the impacting surface based on the existing theoretical models.To solve this...

As uncertainty always exists in the modeling and simulation of complex engineering problems, the identification and analysis of its source and the quantification of its degrees play an important role in assessing the credibility of the modeling and simulation results.In this paper, the concept of un...

With the development of radiography technologies, the synchrotron radiation facilities can emit highly coherent and energy-tunable X-rays with a large flux, making X-ray imaging techniques widely applicable in various fields.The X-ray imaging techniques have evolved from simple radiography to phase-...