• ISSN 1001-1455  CN 51-1148/O3
  • EI、Scopus、CA、JST收录
  • 力学类中文核心期刊
  • 中国科技核心期刊、CSCD统计源期刊
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A serious SHTB tests and related SEM characterization were conducted regarding to Ni-based single crystal superalloys with various microstructures, and the influences different factors, including volume fraction of precipitation particles, phase coar...
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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...
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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...
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Abrasive water jet (AWJ) perforation is an effective mean of stimulation in oil and gas wells. However, the mechanism of perforation formation and its parameter regulation are still problems. This paper designed and carried out experiments on the var...
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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 ...
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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...
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Using dynamic photoelastic experimental method, the effect of reflected explosive stress waves on dynamic cracks and the penetration of dynamic crack propagation in specimens containing cracks are studied. The full-field photoelastic fringe series of...
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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...
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Impact damage and fatigue are emerging challenges in defense industry and civil infrastructure, including aerospace and rail transportation. The application of advanced manufacturing processes has further complicated the mechanical analysis and lifes...
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To study the fracture and permeability characteristics of sandstone-type uranium ore under cyclic impact, the Split Hopkinson Pressure Bar (SHPB) experiments, CT scanning, 3D reconstruction, permeability testing, and numerical simulations were first ...
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Porous materials are accompanied by pore collapse behavior during impact compression. Based on the shock wave structure observed in previous experiments, this paper theoretically analyzes the relationship between the shock wave formation process and ...
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The hose-drogue aerial refueling process involves the complex coupling of aerodynamic force, fuel flow, and flexible structure deformation. Solving these interactions required advanced simulation techniques and significant computational resources, wh...
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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...
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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...
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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...
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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...
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Deep excavation caused by the surrounding rock gradient stress and the natural endowment of the rock layer of slow inclination of the hard structural planes is an important factor affecting the characteristics of the rock explosion. In this paper, wi...
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Abstract: Steel-concrete-steel composite walls (SCS walls) have 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 an...
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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 ...
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Abstract: In order to study the hail impact damage characteristics of high performance carbon fiber composite used in civil aircraft, this paper firstly studied the impact force characteristics of the ice sphere under high-speed impact through experi...
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High-strength steel has excellent mechanical properties, which has been utilized in the fields of explosion and impact. In order to study the blast resistance of high-strength steel plates, ANSYS/LS-DYNA software was first used to simulate the impact...
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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-...
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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...
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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...
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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...
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To investigate the dynamic shear mechanical response of structural surfaces and the subsequent seepage characteristics, a dynamic constant velocity shear system was used to conduct shear mechanical tests on sandstone rough structural surfaces under d...
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To examine the influence of afterburning energy load generated by explosive detonation products on the damage characteristics of confined space, a closed space model is constructed with steel plates. Additionally, the quasi-static pressure in the con...
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Propagation features of explosion-induced stress waves undergo substantial alterations as they traverse heterogeneous interfaces. In rock engineering, the prevalence of discontinuous structural planes, such as joints and fissures, becomes increasingl...
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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...
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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...
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Tolerances in machining and assembly often result in gaps in engineering structures. Under strong dynamic loading, gap jets may form within these gaps, posing a threat to the reliability and safety of the structure. However, the formation mechanism o...
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In order to investigate the coated aluminum powder explosion flame development and propagation mechanism, a shell and core structure of stearic acid coated aluminum powder(SA@Al) was prepared by solvent evaporation method; the improved Hartmann tube ...
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The viscous characteristics of fault granular interlayers have a significant impact on the dynamic mechanical behavior of faults. The problem of determining the viscosity of fault granular interlayers at different slip velocities has not yet been sol...
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As global resource demand continues to rise, the scale of deep underground engineering development is expanding, facing increasingly complex geological conditions and high stress environments. This transition has made the study of the dynamic charact...
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Additive manufacturing (AM) possesses significant advantages in processing critical components in aerospace and defense fields that feature intricate and geometrically complex designs, thanks to its high design freedom and rapid prototyping capabilit...
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Abstract: Please compose your abstract in English here. Natural gas hydrogenation technology has been gradually used in pipeline transportation, but hydrogen/methane is prone to leakage and explosion accidents. This works uses a 20 L spherical device...
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In practical engineering, rock masses frequently suffer from recurrent dynamic disturbances, posing serious threats to engineering safety. To investigate the dynamic mechanical behavior of jointed rock masses under cyclic dynamic disturbances, cyclic...
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To delve into the nuanced understanding of the deformation characteristics of thin-walled ellipsoidal shells under localized impact loads, a systematic and comprehensive research approach was employed, integrating both experimental exploration and si...
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In the past, the design of structures resistant to conventional weapons has largely focused on the study of explosion stress waves in solid media, particularly in soil and rock media (i.e., ground shock issues), while the research on the propagation ...
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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...
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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...
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In order to study the propagation process of shock wave in the tunnel under different explosion yields and different charge positions, a test tunnel was established to meet the needs of personnel and equipment. The effects of charge amount and charge...
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The containment process of aero-engine casing is very complex, which involves large deformation, material viscoplasticity and nonlinear dynamic response of structural elements. In this paper, a new method combining ballistic impact test and finite el...
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The presence of joints significantly influences the performance of rock blasting. The impact of different joint inclination on blasting fragmentation was studied through a combination of experiments and numerical simulations. In this study, a group o...
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For the sake of investigate the effect of high temperature on the energy characteristics of marble, ANSYS/LS-DYNA was used to carry out dynamic compression tests on marble with six temperature gradients and five impact velocities,to analyse the mecha...
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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...
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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...
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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...
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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...
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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...
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The influence mechanism the crack on the dynamic mechanical property of the rockmass is always an important and difficult problem in the field of rock mechanics. However, the establishment of the dynamic damage model for the fractured rockmass is the...
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The dynamic constitutive model of rocks plays an important role in understanding the mechanical behavior of rocks under dynamic loads and solving rock dynamics problems. A dynamic constitutive model of rock with elastoplastic damage coupling based on...
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Abstract: This study investigates the dynamic response characteristics of silica sand under dynamic loading using the modified Split Hopkinson pressure bar (SHPB) to understand its crushing characteristics and energy-absorbing effects. Four different...
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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...
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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, the lateral impact model and residual load-carrying capacity mod...
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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 gas velocity attenuation with the propagation distance of different volumes of gas-air mixed gas in roadw...
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To enhance the service safety of nodular cast iron structures such as the spent nuclear fuel storage and transportation vessel under low temperature and dynamic loads, the mode I dynamic fracture toughness of nodular cast iron was experimentally inve...
Articles in press have been peer-reviewed and accepted, which are not yet assigned to volumes /issues, but are citable by Digital Object Identifier (DOI).
Display Method:
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There are many microcracks and micropores in the rock, which will initiate, propagate, and coalescence under dynamic loading, leading to rock instability and failure. When blasting excavation is carried out, the retained rock mass will be subjected t...
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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...
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To understand the relationship between fragmentation and energy dissipation in copper-bearing ore rock subjected to impact loading, a split Hopkinson pressure bar (SHPB) testing apparatus was employed to study the mechanical properties and energy tra...
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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...
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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...
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The shear mechanical properties and deformation damage mechanism of the double structural planes of traditional anchor cables and new anchor cables with C-shaped tube structures (abbreviated as ACC) under different loading rate conditions were invest...
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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...
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Aiming at the resistance evaluation and engineering design of the rock-rubble concrete shield under the combination of penetration and explosion of earth penetrating weapons, firstly, a finite element modeling method for rock-rubble concrete shields ...
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The large-scale explosive dispersal and the unconfined detonation of particle-spray-air ternary mixtures are closely related to industrial accidents and military applications. However, most of the existing research focuses on the small-scale experime...
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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...
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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...
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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...
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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...
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In order to study the dynamic mechanical properties of concrete and the dynamic temperature at the crack under impact, steel-polypropylene fiber reinforced concrete (SPFRC) was taken as the research object using a self-built high-speed infrared tempe...
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The evaluation of protective performance and optimization of the design of building structures under impact loading is a key issue of concern in the fields of national defense, civil engineering, and other military and civilian use. Lattice columns a...
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In the process of deep penetration of the earth penetration weapon (EPW) attacking the underground target, the non-ideal penetration attitude with an initial attack angle is inevitable, which will introduce transverse overload with a large peak value...
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Explosion experiments utilizing a 20 L spherical explosion apparatus were conducted to investigate the explosion characteristics of aluminum and aluminum-silicon alloy powders, prevalent in additive manufacturing. The tested samples included Al, Al-1...
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Plasma blasting rock breaking technology is characterized by green, high efficiency, controllability, and has a good application prospect in deep rock breaking. In order to provide a new rock-breaking method for the rock-breaking engineering under de...
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To exploring the dynamic response characteristics of the shed-tunnel structure under multiple rockfall impacts, an FEM-SPH coupled numerical model is established based on ANSYS/LS-DYNA and is also tested with the data before. Then, the model is combi...
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Accurately evaluating the continuous effect of penetration and moving charge explosion of earth penetrating weapons is the premise of reliable design of shield on the protective structure. Firstly, a three-stage integrated projectile penetration and ...
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In order to predict the quasi-static pressure of internal explosion in a closed environment composed of aluminum containing active materials and explosive rings, this paper summarizes the existing quasi-static pressure calculation models for hydrogen...
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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...
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To investigate the effect of the longitudinal air gap on the detonation performance of HMX-based explosive, direct observation of steel plate deformation and damage under forward and slipping detonation of HMX based explosive was conducted based on t...
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To investigate the influence of the density of crushed ice region on the cavity evolution of a structure, an oblique water-entry experiment of the structure was conducted by high-speed photography technology under different crushed ice cover densitie...
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Numerical simulation was carried out by using the Fluent simulation software and combining it with the situation of the working face 3906 in a mine to investigate the propagation law of gas explosion in a U-shaped ventilation coal mining face and to ...
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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...
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The sheet explosive loading technology is a crucial method for evaluating the dynamic response of the space structure under the X-ray radiation in laboratory. To achieve the ultra-low specific impulse explosive loading required for the structural ass...
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To investigate the stress wave characteristics within concrete targets under hypervelocity impact, a stress wave testing system based on PVDF piezoelectric stress gauges was established. A calibration method for PVDF piezoelectric stress gauges was p...
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To discuss the flying gap effect of the metal flyer on the initiating behavior for TATB-based explosives, initiation experiments for PBX-6 and PBXL-7 were performed. The target velocity and shape of the flyer to explosives were obtained using a 1 550...
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Research on blasting craters is one of the most fundamental studies in blasting engineering. To elucidate the formation process and mechanisms of blasting craters and to investigate the roles of blasting stress waves and explosion gases in rock fragm...
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In this paper, the microspheres in flying-ash are used as sensitizer and inert additive to prepare the low detonation velocity emulsion explosives. The detonation velocity and the parameters of explosive shock wave in the air of emulsion explosives w...
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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...
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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 ...
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The penetration depth of the earth-penetrating projectile is a basic problem in the design of protection engineering. Scaled testing is an important method to study the penetration law. The size effect between the model test results and the prototype...
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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...
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In order to explore the underwater anti-explosion protection effect of steel fiber reinforced cellular concrete materials, the damage process of reinforced concrete slabs under underwater contact explosion was reproduced by the coupling method of smo...
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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 ...
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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...
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Artificial intelligence/machine learning methods can discover hidden physical patterns in data. By constructing an end-to-end surrogate model between state parameters and dynamic results, many complex engineering problems such as strong coupling, non...
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With the wide application of new types of ammunition and large-caliber heavy artillery, the non-contact killing mode caused by explosive shock is rapidly replacing the original direct contact killing caused by bullets, fragments, etc., and its killin...
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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...
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For the launch safety problem of the typical CL-20-based high detonation velocity pressed explosive (C-1, 94.5% CL-20+5.5% additive), the impact response characteristics of the explosive were studied by a large-scale hammer test with 400 kg, which ha...
Cover
2025, 45(3): 1-1.  
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Abstract:
Contents
2025, 45(3): 1-2.  
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Abstract:
On the Cover
Abstract:
Biological soft materials, often with high water content and ultra-softness, display mechanical properties that non-linearly enhance over a broad range of strain rates. However, existing experimental constraints make it challenging to perform large d...
Explosion Physics
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To reasonably describe the reaction evolution behavior of explosives after ignition under mechanical confinement, we conduct in-depth analysis of the deformation and movement characteristics of the shell, and divide the response process of the shell ...
Impact Dynamics
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To investigate the dynamic mechanical properties of sandstone in deep strata under impact loads, an improved Hopkinson pressure bar experimental system was established. The traditional Hopkinson pressure bar’s transmission rod was replaced with a lon...
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In this study, AlSi10Mg alloy was prepared by selective laser melting (SLM) first, and then subjected to stress relieved annealing treatment. The microstructures of the alloy were analyzed by optical microscope (OM), scanning electron microscope (SEM...
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In relation to the application of high-entropy alloy systems containing high-density and high-calorific value elements in the liner of shaped charge warheads, the Ta-Hf-Nb-Zr high-entropy alloy system is investigated. The study employed an INSTRON ma...
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Reinforced concrete slabs, as the main load-bearing components in the structure of construction projects, are very likely to suffer serious damage in explosive accidents, while polyurea elastomers, with their better anti-blast and anti-impact propert...
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Facing the challenges on the accurate and effective prediction under extreme loads, machine learning has gradually demonstrated its potential to replace traditional methods. Existing approaches primarily focus on predicting the peak overpressure or i...
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To study the penetration resistance to the projectile by the reinforced concrete, the mechanical response of reinforcing bars under the dynamic constraint of both the projectile and concrete was analysed and the limitation of existing finite-length r...
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Combined with the actual distribution characteristics of tungsten fibers and metallic glass matrix, a three-dimensional (3D) mesoscale finite element (FE) geometric model of a long rod of tungsten fiber-reinforced metallic glass composite was establi...
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An experimental investigation of typical projectiles penetrating multi-layer spaced Q355B steel targets was conducted to study the trajectory characteristics of elliptical cross-section projectiles penetrating multi-layer spaced steel targets. Numeri...
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The propeller is a critical component of a ship’s propulsion system that significantly influences the vessel’s performance through its stability and efficiency. Current research on the propulsion shaft system’s anti-shock properties often oversimplif...
Experimental Techniques & Numerical Methods
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To improve the accuracy and robustness of the explicit finite element algorithm based on penalty method for simulating large deformation impact-contact problem, a new large-deformation non-penetration contact algorithm based on forward incremental di...
Applied Explosion Mechanics
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The protection level and domestic standard test level of commonly used passive flexible barriers against rockfall impact are not higher than 5 000 kJ, while bridges in mountains and other important transportation infrastructures are facing rockfall d...