Hydrogen-rich materials are considered to be the most potential candidates for room-temperature superconductors, yielding a research hotspot in physics, material science and so on. Remarkably, the new covalent hydride H₃S and clathrate like LaH₁₀, exhibit record high superconducting transition tempe...

To study the effects of the sintering pressure on the mechanical properties of TaC with various grain sizes, nano- and micro-sized TaC powders are sintered at high pressure and high temperature (HPHT) to acquire bulk TaC ceramics under different sintering conditions. Different characterization appro...

Study on the superconducting transition of single crystal Nb₃Sn under high pressure is valuable to understand the mechanism of critical performance degradation in superconducting Nb₃Sn, which is induced by the mechanical deformation. In this paper, on the basis of molecular dynamics simulations, we ...

Magnetized liner inertial fusion (MagLIF) has combined the advantages of the conventional magnetic confinement fusion (MCF) and inertial confinement fusion (ICF), which could reduce the barrier of controlled fusion and has great potential and feasibility for future applications. In this work, a conv...

Due to the continuous variation of material density in functionally gradient aluminum foams, a feedback load gradually increases within the compression process. Currently, most of the researches have been focused on the longitudinal compression mechanical response. However, considering the possible ...

In order to reveal the mechanical properties and energy evolution of hard rock under different confining pressures, conventional triaxial compression tests on granite samples under different confining pressures were carried out by the RMT-150B rock mechanics test system. The results showed that the ...

In this paper, the dynamic mechanical properties of C45 concrete materials at different temperatures (20, 200, 400 °C) are carried out on split Hopkinson pressure bar (SHPB) equipment with a large diameter of 74 mm. The stress-strain curves of concrete materials at different temperatures and strain ...

In the application environment, the surface of the ultra-high-speed aircraft is violently rubbed with the air to make the temperature extremely high. Compared with ordinary ceramics, ultra-high temperature ceramics possess a higher melting point with good oxidation and ablation resistance performanc...

A helical auxetic yarn (HAY) is a composite yarn which is formed by helically wrapping a high modulus yarn on a low modulus yarn, and it exhibits the so-called negative Poisson’s ratio phenomenon of transverse expansion upon longitudinal stretching. To reveal the mechanisms of HAY’s shock resistance...

The stress state of the target was seldom taken into account in the investigation of the ballistic performance of cement mortar. Based on the self-developed penetration experimental system of concrete under true-triaxial confinement and the experimental results of the anti-bullet performance of ceme...

The in-plane biaxial impact response of a re-entrant auxetic honeycomb structure is studied by finite element simulation. A re-entrant auxetic honeycomb structure with different regularities is established by using the node perturbation method, and its deformation modes, stress-strain curves and ene...

By employing a split Hopkinson pressure bar (SHPB) device, the dynamic crushing experiments of quartz glass beads with diameters of 8.30, 11.68, 15.42 and 17.50 mm, were implemented with impact velocity of 5.6–11.5 m/s. High-speed photographing technology was used to record the crushing process of d...

In this paper, the spallation characteristics of tantalum (Ta) under plate-impact loading are studied through numerical simulation. The feasibility and reliability of the Lagrange and smooth particle hydrodynamics (SPH) methods and several constitutive models (the Johnson-Cook, Steinberg-Cochran-Gui...

According to the actual combat background of underwater multiple initiation, the numerical simulation of shock wave load characteristics under the condition of two-point simultaneous initiation is carried out. Based on the self-developed multiphase compressible fluid calculation program, a high prec...

The emission environment can be transformed from water medium to gas medium by water immersion gap-exist launch mode. In order to study the driving impact load of high speed projectile under this condition, the theoretical model of projectile impact load is established. The inlet impact loads of the...

Studies on anti-explosion performance of steel-concrete-steel composite structures have been widely conducted in the fields of protection engineering, anti-terrorism and explosion protection. Taking steel-concrete-steel composite plate as an example, the failure mode and dynamic performance of the c...

The damage of shaped charge jet to liquid-filled structure was analyzed by ANSYS/LS_DYNA software.The influence of liner thickness and material parameters on the performance of shaped charge warhead under water is obtained. The thickness of liner between 0.04D_k and 0.06D_k, jetting penetrator charge ...

To assess the effect of cyclic explosion on underground caverns, based on a similarity model test, the finite element software ABAQUS was utilized to analyze the dynamic responses and cumulative damage of underground caverns under cyclic explosion at low levels and a single explosion at high level. ...

In order to study the probability ignition behavior of explosive and the influence of sample thickness on ignition in drop weight test, a three-dimensional numerical simulation of brittle explosive PBX-2 is carried out. The three-dimensional numerical simulation method combining the finite element m...