A variety of interesting physical phenomena such as semiconductor-metal transition, superconductivity, and high spin-low spin transition in FePSe₃ can be realized under high pressure. However, the current results of its crystal structures under high pressure are mainly based on theoretical research,...

Equations of state (EOS), combined with the partial differential equations of describing conservations of energy, momentum and mass, form a complete set of fluid dynamics equations on solving dynamic compression behaviors of material. Under dynamic compression, phase transition of material may lead ...

In this study, for the muzzle brake with a side hole angle of 120° and the hole diameter of 16 mm used in a first-stage gas gun with a diameter of 50 mm, the flow field morphology is simulated, based on 3D unsteady Navier-Stokes equations and multi-region dynamic grid technology. The characteristics...

To study the dynamic mechanical properties of G550 cold-formed steel under high temperature and high strain rate, high-temperature synchronous controlled dynamic loading device (split Hopkinson tensile bar) was implemented. The medium strain rate tensile tests were also conducted with the high-speed...

The spallation behavior of the ductile metals is a process involving nucleation, growth and coalescence of voids, and the coalescence of voids is difficult to directly observe experimentally. In this paper, the finite element analysis method was used to study the coalescence behavior and competition...

Carbon fiber reinforced polymer (CFRP) is gradually applied to the design of anti-explosion and anti-shock engineering of warships due to its excellent anti-penetration performance. In order to study the protective performance of steel-CFRP laminates under the action of shaped charge projectile, num...

In the process of underground space development and construction, the blasting seismic wave induced by drilling and blasting is very important to the safety of underground pipeline. When the explosion is close to the pipe, the curvature of the wave front will have a significant impact on the blastin...

The effect of crystal orientation on the void growth in face centered cubic (FCC) metal under impact loading was studied by adopting rate-dependent crystal plastic constitutive model. VUMAT subroutine was used to embed the rate-dependent crystal plastic constitutive model into the ABAQUS finite elem...

As the main force components of engineering structures, reinforced concrete slab are prone to damage when it is subjected to terrorist attacks or accidental explosions, and even cause the overall collapse of the structure. Therefore, it is of great significance to understand and predict the dynamic ...

Based on the Kong-Fang concrete material model proposed recently and the three-dimensional mesoscopic model, the penetration of a typical warhead into rock-rubble overlays was numerically simulated. The influence of interface modelling of rock-rubble overlays on the projectile overload (or accelerat...

Aiming at the parameter missing problem of the shock initiation criteria of JO-9C(Ⅲ) explosive, parameters of three different forms of initiation criteria of JO-9C(Ⅲ) explosive were obtained by fitting the theoretical model and simulation results. The simulation models of shock initiation of JO-9C(Ⅲ...

In order to accurately evaluate damage effect of underwater explosion shock wave on flat plate structure, the power parameter category with the effective impulse as the damage criterion is proposed, and a correction method considering the oblique incidence effect of the spherical wave is given. The ...

In order to explore the effect of constraints on the displacement law of broken ceramics and the penetration resistance of ceramic composite armor, the SPH-FEM (smoothed particle hydrodynamics-finite element method) coupling method was used to simulate the penetration of cylindrical bullets into cer...

Based on the velocity distribution of fragments of a metal hemispherical shell subjected to explosive loading, a new fragment recovery system with the combination of polyurethane, water and polyurethane medium was designed. The applied waterproof polyurethane foam barrel is made up of three symmetri...

To ensure safety and stability of the reconstruction and expansion of the newly built station under a nearly 50 years long-term service station, the structural status of main structure and auxiliary structure of an operating station and a reserved station is inspected. The construction deformation c...