
With the increase in global terrorism and industrial accidents, research on the safety of infrastructure under explosion impacts has become particularly urgent. As a key means to explore the dynamic response and damage characteristics of materials an...

The catenary reinforced method can enhance the crashworthiness of re-entrant honeycomb (RH) by avoiding hollow structural characteristics, strengthening negative Poission’s ratio effect, and utilizing the high load-bearing effectiveness of catenary s...

In order to quantitatively evaluate the overload stability of defective charges, a charge overload test system that can take into account both high overload pressure and wide pulse was innovatively established, and the overload stability of charges w...

In order to explore the propagation characteristics of P wave in nonlinear oblique joints rock mass, the method combing theoretical analysis, comparative verification and numerical calculation is adopted. Firstly, the hyperbolic joint model with norm...

Significant differences in structure and layout exist between the Blended Wing Body (BWB) civil aircraft and conventional cylindrical fuselage metal aircraft. As a result, the impact resistance characteristics of the non-circular fuselage structure a...

To accurately characterize the stress-strain constitutive relationship of metal materials under high strain rates, a high-precision constitutive relationship prediction model based on Graph Neural Networks (GNN) and Kolmogorov-Arnold Networks (KAN) w...

It’s significant to understand the generation, transformation, and dissipation mechanism of energy of high pressure tanks in fire scenarios for the consequence assessment of explosion accidents. This study revealed the differences properties between ...

A high-pressure physical property research technology for metal powders was established based on laser driving method. Through target optimization design and experimental verification, while achieving the regulation of shock wave loading characterist...

Abstract: Based on the split Hopkinson pressure bar (SHPB) technique, Mode I dynamic fracture tests were carried out on alumina ceramic using a newly designed miniature three-point bending fracture specimen combined with a fixture. The fracture initi...

The dynamic response and damage assessment of reinforced concrete (RC) piers under lateral impact loads are investigated in this paper. High-fidelity finite element models of RC piers under lateral impact are developed established using the explicit ...

In order to obtain the dynamic high-temperature properties of iridium alloy, the modified split Hopkinson tensile bar was used to conduct the tensile test under 103/s strain rate and temperature of room temperature, 600℃, 900℃ and 1100℃. Quick heatin...

Layered rock masses are prone to bedding plane cracking or even large-scale collapse under impact loads such as blasting. In engineering practices, bolts or cables are commonly employed for anchoring support. This study conducted dynamic impact tests...

Lattice mechanics metamaterials have been widely used in various fields due to the lightweight, flexible designability and excellent impact resistance. In this paper, the enhanced X-shaped lattice mechanical metamaterials were designed and prepared b...

Explosion suppression technology can effectively reduce the consequences of accidents, which is an important part of combustible gas explosion safety protection technology. As the core component of explosion suppression device, the performance of the...

Coal dust explosion has become one of the most serious accidents in underground coal mines due to its powerful destructive force and extensive damage range. Using the Box-Behnken experimental design method, the influence of multi-factor coupling effe...

Coal-to-hydrogen is an effective solution for the low-carbon transformation of coal energy. To address the explosion safety issues during coal-to-hydrogen transportation via the natural gas pipeline network, the effect of non-premixed CO2 injection o...

Contact explosion is an important condition in the damage and protection of underwater structures, and the pulsating bubbles generated by explosive underwater explosion are an important damage source. At present, the research on underwater explosion ...

Concrete pipelines are widely used in major water transmission network projects in China, such as the South-to-North Water Diversion Project. However, buried pipelines in mountainous areas are prone to damage and leakage due to rockfall impacts. To i...

Regarding the calculation problem of the thickness limit of high-strength steel-concrete composite structures under the impact of slender thin-walled projectiles, this paper carried out tests on the impact of composite targets by slender thin-walled ...

In order to investigate the damage mechanism and load characteristics of caisson wharf subject to underwater contact and near-field explosion, finite element numerical simulation verified by the experimental results was conducted based on the caisson...

The load distribution of building surface under blast wave has a direct impact on the failure mode and degree of building. In order to study the distribution of blast wave load of building surface under surface burst, firstly, the fine scaled experim...

To meet the need for accurate and rapid prediction of overpressure generated by an explosion, a graph neural network (GNN)-based artificial intelligence model was proposed in this paper for predicting the spatial and temporal distribution of the blas...

Liquid oxygen (LOX) blasting is a novel gas-based rock fracturing technology that relies on rapid phase transition and volumetric expansion to generate high-pressure gas for rock breakage. To address the unclear mechanisms of LOX phase transition, th...

In order to ensure the safe transportation and storage of highly flammable and combustible gases, it is essential to implement effective prevention and control measures.Explosion venting as an effective way to prevent and control its explosion hazard...

To augment the ballistic protection capabilities of armor systems, an investigation into the impact resistance of composite structures comprising silicon carbide ceramics and novel twinning-induced plasticity (TWIP) steel has been undertaken. Employi...

In recent years' regional and local conflicts, with the continuous development of military technology, various new types of weaponry and large-caliber ammunitions have been widely used. As a result, the proportion of craniocerebral injuries to person...

In order to investigate the impact of target damage on projectile penetration performance, a series of penetration experiments were conducted on a concrete target utilising a former jet and a subsequent kinetic energy projectile. The critical factors...

The calculation method of explosion relief area for lithium-ion battery thermal runaway (LIBTR) environmental structures is still unclear. Using an 8L cylindrical explosion test device, five discharge diameters of 10.5mm, 15mm, 21.2mm, 30mm and 60mm ...

the crack propagation behavior of brittle materials such as rock is often difficult to capture under explosive loading. Based on the theory of explosive damage, model experiments were conducted using transparent polymethyl methacrylate (PMMA) to simu...

With the rapid development of hypervelocity weapons, analyzing the penetration effectiveness of hypervelocity weapon warheads on concrete shield is significant for the design of newly-built protective structures and the safety evaluation of as-built ...

In this study, it is proposed to combine the negative Poisson's ratio structure with ultra-high toughness cementitious composites (UHTCC) to improve the explosion resistance of the blast wall. And through a combination of the explosion experiment and...

In order to study the anti-explosion performance of a single-room reinforced concrete building under internal explosion loads, a full-scale reinforced concrete single-room building, whose dimensions were 4m×4m×3m, was designed and constructed. For th...

Supercritical CO2 phase transition rock-breaking is a dynamic destruction process under the combined action of shock waves and high-pressure gas. To deeply investigate the rock-breaking mechanisms of supercritical CO2 phase transition under multi-hol...

Fluoropolymer-based reactive materials serve as new damage materials with high destructive efficient, capable of structural damage to targets through a combination of terminal kinetic energy penetration and internal energy release effects under stron...

Reinforced concrete (RC) shed serves as an effective in-situ solution for rockfall protection along mountainous highways and railways. Using the commercial software LS-DYNA, refined numerical simulations were conducted to investigate the damage and f...
In order to study the deformation characteristics of thin-walled ellipsoidal shells under localized impact loading, experimental investigations and numerical simulations were conducted. The global deformation characteristics, central dent depth and d...

During the underwater multiple projectiles launch process, the projectiles operate in a complex and dynamic flow field environment. The trajectory deflection of projectile is influenced not only by initial conditions such as velocity and crossflow bu...

The quasi-static pressure thermodynamic model for confined explosions provides an effective characterization of pressure evolution with mass-to-volume ratio m/V while enabling the derivation of critical parameters, including adiabatic index through m...

To address the fracture problem of dynamic submarine cables and their protective sheaths caused by friction and collision with wind turbine platforms under harsh sea conditions, a multi-impact resistant composite protective layer was designed using E...

In order to study the influence of constraint conditions on the reaction characteristics of CL-20-based PBX explosive after non-impact ignition, a variable constraint ignition test device was designed. Combined with high-speed camera and pressure sen...

In order to study the initiation process of liquid explosive nitromethane containing cavities under shock wave loading, a Eulerian multi-medium calculation method based on the level set method was proposed. Using the reactive Euler equations as the c...

Prestressed reinforced concrete (RC) T-beam bridges are more common in highway bridges, the bridge deck damage after the explosion attack is mostly in the form of a breach and affects its ability to pass, but the existing bridge explosion damage asse...

Small sample size and unavoidable uncertainty seriously hinders the research of detonation experiments with multi-physical attributes. Probability learning on manifold (PLoM) involves diffusion map and Ito projection sampling, which can generate suff...

The response of plate structures under multiple explosive loads has important engineering significance. Currently, there are many experimental and numerical studies on this issue, but research based on theoretical methods is still lacking. This artic...

Accurate prediction of building explosion power field is very important for damage assessment and anti-explosion design of engineering structures. The prediction accuracy of traditional empirical formulas is often limited due to the failure to fully ...

In order to explore the influence of the propellant bed accumulation distribution on the three-dimensional characteristics of initial pressure wave in the chamber during the internal ballistic process of a large-caliber modular charge gun, a three-di...

When a truck-mounted howitzer is firing, the crew compartment structure deforms elastically under the influence of the muzzle blast load and causes disturbances in the internal flow field pressure within the cabin. The overpressure caused by these di...

The common scientific foundation in the process of resource exploitation and utilization is deep rock mechanics theory. Accurately understanding the dynamic mechanical properties of deep rocks not only provides insights into the geological processes ...

To investigate the penetration resistance of metal honeycomb tube-constrained concrete structures under hypervelocity impact, penetration experiments were conducted using a two-stage light gas gun with projectile velocities near 1500 m/s. The Materia...

To investigate the propagation characteristics of blast shock waves and thermal effects of fireballs in tunnel explosions involving thermobaric explosives, numerical simulations were conducted using OpenFOAM. The simulation accuracy was validated thr...


Blast wave has distinct characteristic parameters, which makes it difficult to replicate in experiments. Large shock tubes provide a low-cost and high-efficiency experimental platform to solve this problem, which can avoid the inaccuracy of the exper...

In order to select the shaped charge structure suitable for large-distance non-contact penetration damage in water, three typical shaped charge structures, explosively formed projectile ( EFP ), jetting projectile charge ( JPC ) and shaped charge jet...

In order to balance the need for personnel protection and lightweight of modern combat vehicles, it is necessary to optimize its explosion protection structure. Due to the high cost of experiments, finite element simulation is usually used instead. H...

The evolution and distribution characteristics of cracks in presplit blasting can be significantly affected by the in-situ stress, leading to problems such as over/under excavation in deep rock masses. In this investigation, a theoretical model for r...

In view of the explosion response test in the cabin of warship structure, the marine special steel is expensive, which greatly increases the test cost, so the study on the equivalence of ordinary steel instead of special steel in the cabin explosion ...

To accurately predict the dynamic tensile fracture in concrete materials subjected impact and blast loadings, this study firstly establishes a modified Monaghan artificial bulk viscosity calculated method within the framework of a non-ordinary state-...

Study on gas deflagration-to-detonation transition (DDT) of is of great significance for industrial explosion prevention and detonation propulsion technology research and development. Staggered array of obstacles is a typical obstacle layout that may...

Impact ejecting, deemed a crucial constituent of the impact process, is recognized for its pivotal role in both engineering applications and scientific analyses within the domain of deep space exploration. Its importance is underscored across diverse...

Two kinds of structural projectiles of different materials were designed in this paper, and an experimental study of 11kg projectiles penetrating the reinforced concrete target at 1400m/s was carried out by a 203mm Davis gun. Based on the experimenta...

To study the loading characteristics of shock wave along the water surface in near-surface explosion scenarios, explosion tests were carried out with three typical scaled height of burst . The explosion tests were contact burst (H_ = 0), near-surface...

In reinforced concrete (RC) box structures, the blast wave is difficult to dissipate freely outwards, and the structure's damage degree can be intensified after multiple reflections. To thoroughly investigate the load characteristics and dynamic beha...

In order to obtain the ignition behavior of PBX molding powder under gap extrusion loading, an experimental device for gap extrusion of molding powder was designed based on projectile impact. In order to ensure that there is no other flow space excep...

The defective cracks were prefabricated on the wall of the notch holes by using PMMA material,which were parallel or vertical to the notch, and the distance from the defective cracks to the centre of the holes was 2mm, 3mm and 4mm. The influence of n...

It is of great significance to develop an engineering model based on the physical mechanism of non-shock initiation reaction of structural charge, which can be used to describe the reaction evolution process and quantify the reaction intensity for ev...

In order to effectively predict and control the consequences of fuel-air mixtures explosions in enclosed spaces, and thereby reduce the casualties and property losses caused by accidents, this study had investigated the relationship between the explo...

The purpose of this paper is to study the pressure characteristics and structural deformation mechanism of aluminum honeycomb sandwich plates (AHSPs) under water impact through experimental methods. The self-designed drop test platform was establishe...

In order to explore the explosion reaction effect of zirconium-based reactive material casing and the ignition effect of fragments on fuel fuel driven by explosion, the reactive material casings containing Zr, Cu, Ni, Al and Y as the main elements wa...
To investigate the explosion flame development and propagation mechanism of coated aluminum powder, a shell and core structure of stearic acid-coated aluminum powder (SA@Al) was prepared using the solvent evaporation method. The influence of dust clo...
Aiming to investigate the performance and design approach of the carbon fiber reinforced polymer (CFRP) sheet strengthened masonry infilled walls subjected to blast loads, the commercial finite element program LS-DYNA is firstly used to develop the s...
Applicable buffer-head covers and various open-cell foam buffer configurations were designed to meet the buffering and load reduction challenges during high-speed water entry vehicles. In the arbitrary Lagrangian-Euler method, the grid can move as th...
Abrasive water jet (AWJ) perforation is an effective mean for stimulation in oil and gas wells. However, the mechanism of perforation formation and the regulation of its parameter remain poorly understood. This study investigates the variation in hol...
To investigate the evolution of phase structure, dislocation distribution, energy absorption capacity, and impact accumulation effect of high-entropy alloys (HEA) under shock loading, molecular dynamics simulations were employed to systematically ana...
In recent years, polyurea-coated reinforced concrete (RC) slabs have been extensively studied both experimentally and numerically for structural strengthening against contact explosions. However, theoretical investigations remain limited, particularl...
A closed space model was constructed using steel plates to examine the influence of afterburning energy load generated by explosive detonation products on the damage characteristics of confined space. Additionally, the quasi-static pressure in the co...
Porous materials are accompanied by pore collapse behavior during impact compression. Based on the shock wave structure observed in experiments carried out by predecessors, the theoretically analysis of the relationship between the shock wave formati...
This study investigates the dynamic response characteristics of silica sand under dynamic loading, employing a modified split Hopkinson pressure bar (SHPB) to gain insights into its crushing behavior and energy absorption properties. Four distinct gr...
With the increasing speed of trains, the impacts of mechanical shock, arc heat, and Joule heat on the high-speed railway catenary system have become increasingly significant. The coupling effect of high temperature and impact load has emerged as a ke...
The explosion limit serves as a key parameter for assessing explosion risks and prevention strategies of combustible gases. Through a self-developed 5-liter experimental platform for flammable gas explosion characteristics, the upper explosive limits...
In the construction process of drilling and blasting method for layered rock tunnel, the unbalanced distribution of explosion energy was easy to cause serious over- and under-excavation. The joint dip angle, inter-hole delay, and hole spacing were th...
Hydrogen-doped natural gas technology has been gradually used in pipeline transportation, but hydrogen-doped natural gas is prone to leakage and explosion accidents. The study used a 20L spherical device to investigate the effects of hydrogen blendin...
To investigate the propagation process of shock waves within a channel under different explosive yields and charge positions, this study established an experimental channel designed for individual soldier transit. Through experiments and simulations,...
In order to reduce the great threat of gas explosion to coal mine operators and coal safety mining, the law of explosion overpressure and impact airflow velocity attenuation with the propagation distance of different volumes of gas-air mixed gas in r...
Steel-concrete-steel composite (SCS) wall has been applied in high-rise buildings and nuclear power plants. Its performance under accidental and extreme loads during the whole life cycle deserves attention. Considering that fires and explosions often...
To accurately predict the initial velocity distribution of cylindrical casing under central point detonation at one end with different length-diameter ratios (L/D), it studied the impact of L/D ratios on the initial velocity of fragments and the appl...
In order to improve the quantitative characterization of the penetration process of tungsten alloy projectile into the target, the numerical methods such as FEM (finite element method), SPG (smoothed particle Galerkin), SPH (smoothed particle hydrody...
In the near-field explosion of improvised explosive device, the protective structure is often subjected to the combined action of blast wave and fragments. To improve the protection performance of the structure, a composite structural material contai...
Axisymmetric conical structures, as a common configuration, induce oblique detonation waves exhibiting significantly greater structural complexity compared to those generated by sharp wedges. Numerical simulations of oblique detonation waves induced ...
In blast-resistant structural design for conventional weapons, previous studies on blast-induced stress waves in solid media have predominantly focused on soil and rock media (i.e., ground shock issues), whereas research on the propagation and attenu...
To understand the dynamic fracture characteristics of nodular cast iron structures such as the spent nuclear fuel storage and transportation vessels under low temperatures and dynamic loads, the mode I dynamic fracture toughness (DFT) of nodular cast...
With its high design freedom and rapid prototyping capabilities, additive manufacturing (AM) offers significant advantages in manufacturing critical components with complex geometries for the aerospace and defense industries. Ti-6Al-4V alloy, leverag...
H-section steel columns have been widely employed in industrial buildings and parking lots, etc., which are vulnerable to crane-loading or vehicle collisions. Based on above background and previous experimental studies, the lateral impact model and r...
Traumatic brain injury (TBI) is the neurological disorder with the highest incidence and prevalence, and poses a huge public health burden for the whole society. An in-depth study of the biomechanics of TBI can help to improve the effectiveness of he...
Tolerances in machining and assembly often result in gaps within engineering structures. Under strong dynamic loading, gap jets may form within these gaps, thereby posing a threat to the reliability and safety of the structure. However, the formation...
In order to investigate the damage mechanisms of zirconium-based amorphous alloy fragments penetrating carbon fiber targets and their subsequent effects on target failure, ballistic experiments were conducted using a 12.7 mm ballistic gun. The experi...
Polypropylene (PP) is widely utilized in industrial production, yet PP dust generated during its production and transportation can form explosive dust clouds, leading to severe dust explosion accidents that threaten personnel and equipment safety. To...
Oxy-fuel combustion is one of the effective means to reduce greenhouse gases. To grasp the combustion characteristics of the clean fuel acetylene in O2/CO2 atmosphere and to investigate the effect of different CO2 volume fraction on the lower flammab...
Compared to concrete and steel structures, research on the blast resistance of timber structures is relatively scarce. Although experimental studies on the blast performance of light-frame wood walls have been conducted, relevant numerical studies re...
To study the damage law of calcareous conglomerate under blasting, firstly, the damage fracture process and mechanism of calcareous conglomerate under blasting load were revealed based on the theory of damage fracture mechanics. A meso-scale model of...
For the estimation of blast loading in complex structures, traditional numerical simulation methods were computationally intensive whereas rapid estimation methods based on neural networks can only provide estimates at local points without providing ...
The equation of state for the detonation products of explosives is one of the foundations in explosion physics. JWL equation of state has been widely applied to study the properties of various explosives. In order to obtain the equation of state of t...
Prefabricated concrete bursting layer has a very important application prospect in the field of protective engineering attributed to its technical advantages including high construction efficiency and construction quality. However, compared with the ...
To investigate the dynamic mechanical characterization of non-pure and non-intact ice materials under impact loads, a modified split Hopkinson pressure bar (SHPB) was used. Rapid loading, rod end cooling and waveform shaping techniques were used to e...
To address the issues of over-excavation at the tunnel arch foot due to the difficulty of forming the perimeter hole blasting and under-excavation at the tunnel face bottom, the damage characteristics of surrounding rock caused by perimeter hole blas...
To investigate the crashworthiness and energy absorption characteristics of aircraft fuselage substructures and to conduct structural crashworthiness design, this study focuses on a typical metal aircraft fuselage as the research object. A drop test ...
The small-scale test has several advantages, such as low cost, low risk, and short duration, and has been widely applied in aerospace and other fields. Taking the lower structure of a typical civil aircraft fuselage as the research object, this study...
Structural damages in solid propellants can lead to combustion anomalies and affect ballistic performance. Utilizing synchrotron radiation X-ray computed tomography technology and an in-situ mechanical loading test system, the macro-meso structures o...
K447A, a nickel-based superalloy, is widely used in critical hot-end components of aerospace engines due to its excellent high-temperature performance. Through quasi-static and high strain rate compression experiments within the temperature range of ...
To enhance the evaluation and prediction for service performance of hot-end components in equipment under the dynamic loads, a comprehensive study was conducted on Ni-based single crystal superalloys with diverse microstructures. This study involved ...
With the deterioration of the natural climate, hail impact has become a threat that cannot be ignored by civil aircraft. To study the hail impact damage characteristics of high-performance carbon fiber composites used for civil aircraft, we first inv...
The characteristics of flash radiation during hypervelocity impact processes were investigated using a flash radiation test system established on a two-stage light gas gun platform. The study explored how impact velocity, projectile diameter, and tar...
A study was conducted to investigate the crash impact response of the lower fuselage structure of a typical civil aircraft with an auxiliary fuel tank installed. The results of vertical crash tests conducted at impact velocities of 1.53, 2.78 and 5.9...
The containment process of aero-engine casing is very complex, which involves large deformation, material viscoplasticity and nonlinear dynamic response of structural elements. To meet the fan casing containment assessment requirements of engine, a n...
The hose-drogue aerial refueling process involves the complex coupling of aerodynamic force, fuel flow, and flexible structure deformation. Solving these interactions requires advanced simulation techniques and significant computational resources, wh...
To enhance the hypervelocity impact protection performance of Whipple shields against high-speed space debris, an aluminum spherical micro-airbag array metastructure was designed without incorporating additional energy-absorbing materials such as por...
Impact damage and fatigue are emerging challenges in the defense industry and civil infrastructure. The more pronounced material size effect induced by advanced manufacturing processes makes mechanical analysis and life prediction in these contexts m...
Cortical bone, as a critical component of the human skeletal system, effectively disperses and absorbs external impact forces, protecting the internal medullary cavity, surrounding soft tissues, and organs from damage. In order to investigate the mec...
Founded in 1981 monthly
Sponsored byChinese Society of Theoretical and Applied Mechanics
Institude of Fluid Physics, CAEP
Editor-in-ChiefCangli Liu