The all-inorganic halide perovskite is a promising photoelectric material because of its strong stability and good optical properties. However, it is still a key problem to effectively design the band gap to meet the practical application requirements. By controlling the reaction time and temperatur...

A new metallic metastable silicon allotrope hP12-Si has been theoretically proposed using the particle swarm optimization method. The hP12-Si structure can be seen as a combination of a tunnel-type structure formed from six-membered sp³ silicon rings, which is similar to the previously reported Si₂₄...

The transformation-assisted consolidation under pressure has been demonstrated to be a promising method to fabricate the nano or submicron polycrystalline ceramic materials. The high pressure suppresses the long-range diffusion of the atoms and, consequently, restrains the grain coarsening. The new ...

With the rapid development of static high-pressure technology, the complex and variable compression processes are used in high-pressure scientific research. However, the effect of compression processes on the pressure-generation efficiency and pressure-seal capability has rarely been studied. Measur...

Reverse impact experiments were performed at a shock pressure range from 30 GPa to 73 GPa to investigate the dynamic response of magnesium aluminum alloy. A displacement interferometer system for any reflector was employed to measure the impact velocity and sample/window interface particle velocitie...

The elastic constants parameters, bulk modulus, shear modulus and mechanical properties of the LaB₆ crystalline material have been systematically studied with density functional theory and the Birch-Murnaghan formation. The results show that the LaB₆ has larger C₁₁, indicating its larger elastic con...

The Richtmyer-Meshkov instability (RMI) under extreme shock conditions has important academic and engineering significance in the field of inertial confinement fusion (ICF). Present macroscopic hydrodynamic methods are difficult to be directly applied to RMI in extreme conditions due to the lack of ...

In order to measure the detonation pressure of large mass explosive more convenient in the field work, a modified aquarium test has been designed by using a self-developed continuous pressure-conducted velocity probe (CPVP). The method can continuously record the trajectories of detonation and shock...

As the continuous improvement of the strength of concrete structure, more and more protective fortifications have chosen concrete as the main building material. On the basis of the smooth particle hydrodynamics method, the TCK-HJC composite constitutive model is proposed to simulate the deformation ...

The appropriate material state equations and strength models were chosen. Through the numerical simulation results, the fragmentation behavior of the projectile material is analyzed. The fragmentation of the projectile mainly consists of spallation caused by release waves and fragmentation of the ma...

The dynamic response of the equivalent areal density polyurea-coated steel plate and a single steel plate under air blast loads is simulated by using the finite element software LS-DYNA after the validity of this method is demonstrated. The influence of polyurea coating position on its antiknock abi...

The dynamic mechanical behavior of carbonate rock subjected to dynamic impact in in-situ formation is one of the basic understandings for the large-scale development of carbonate reservoirs. In this paper, the dynamic mechanics of carbonate rock under true triaxial confining pressures was experiment...

The quasi-static and dynamic compression tests of expanded polystyrene (EPS) foam material were carried out through a universal material tester and a drop-weight impact machine. The density and loading rate effects of the dynamic compression characteristics for the polystyrene foam material were dis...

Compared with aluminum alloy and other materials, fiber fabric materials have the advantages of light weight, flexible folding, etc. The fiber fabric material can be applied to the flexible inflatable protection structure deployment, thereby constructing a multilayer, large-spacing protection struct...

Natural fiber, replacing conventional reinforced as its various advantages, often are embedded in weaker material for reinforcing the materials. Natural fiber reinforced polymer composites are widely used in application of automotive construction, aerospace, etc. as special engineering material beca...

Carbon nanotube film prepared by floating catalyst chemical vapor deposition (FCCVD) method was used as interlayer toughening material for carbon fiber reinforced laminated composites. The carbon nanotube film/carbon fiber/epoxy hybrid (CNTF/CF/EP) composites were prepared by hot pressing and cut in...

Titanium alloy is widely used in aerospace industry due to its excellent mechanical properties of high strength and light weight. In this paper, a quasi-static and dynamic tests of TB6 titanium alloy has been implemented with an Instron universal material testing machine and a split Hopkinson pressu...

The containment dome of the nuclear power plant (NPP) is the last barrier and designed with reinforced concrete in a 60° of configuration. This paper uses explicit dynamic finite element analysis software ANSYS/LS-DYNA to establish finite element model of the ordinary reinforced concrete slab and re...

For exploring the perforation mechanism of the polyurea coating composite structure, the ballistic tests in which the target was made of steel plate coated with elastomer were carried out. During the experiment, the damage modes of projectiles and targets were obtained and employed for further analy...

In order to improve the bullet destruction, the design of the new type of bullet—shrapnel, which is based on the standard small bore bullet is proposed. The experiment of gelatin penetrated by shrapnel is performed to study the deformation of projectile’s head at different speed range and through th...

Based on the similar model test, we studied the peak particle vibration velocity (v_p) of the crack-containing anchorage caverns under top explosion using numerical analysis method, and discussed the influence of the crack’s inclination angle and length on v_p. The results show a vibration velocity-am...

High pressure carbon dioxide (HPCD) is a non-thermal food processing technology, which is applied to inactivate microorganisms and enzymes in food. In recent years, it has been found that HPCD can induce proteins to form gels, and the adsorption mass of HPCD has an important effect on the gel proper...

Hydrogen hydrate (H₂-H₂O) excited significant interest as an environmentally clean and efficient hydrogen storage material. Here we conducted a high-pressure experimental research on hydrogen hydrate combined with in-situ Raman spectroscopy and synchrotron X-ray diffraction measurements. Our results...