2018 Vol. 38, No. 1
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2018, 38(1): 1-8.
doi: 10.11883/bzycj-2017-0030
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Abstract:
Impact experiments by a gas gun were conducted to investigate the impact-induced initiation thresholds of a PTFE (polytetrafluoroethylene)/Al composite using targets of steel, aluminum and low-density polyethylene (LDPE) materials and sample rods of ...
Impact experiments by a gas gun were conducted to investigate the impact-induced initiation thresholds of a PTFE (polytetrafluoroethylene)/Al composite using targets of steel, aluminum and low-density polyethylene (LDPE) materials and sample rods of ...
2018, 38(1): 9-18.
doi: 10.11883/bzycj-2017-0155
Abstract:
In this study we examined the changing tendency of the shock wave energy, bubble energy, total energy per unit mass and the total energy per unit volume by analysis of the pressure-time curves, and analyzed the chemical reaction process of the Ti fib...
In this study we examined the changing tendency of the shock wave energy, bubble energy, total energy per unit mass and the total energy per unit volume by analysis of the pressure-time curves, and analyzed the chemical reaction process of the Ti fib...
2018, 38(1): 19-27.
doi: 10.11883/bzycj-2017-0172
Abstract:
The effects of the blocking rate and shape of obstacles on the explosion characteristics of methane/hydrogen at the stoichiometric mixture were investigated using experimental facilities fabricated by ourselves. The results demonstrate that there are...
The effects of the blocking rate and shape of obstacles on the explosion characteristics of methane/hydrogen at the stoichiometric mixture were investigated using experimental facilities fabricated by ourselves. The results demonstrate that there are...
2018, 38(1): 28-36.
doi: 10.11883/bzycj-2017-0178
Abstract:
The initial and precise identification of the S-wave phase is a crucial step in the inverse analysis of dynamical mechanical parameters of rock mass. The efficiency and precision in this identification is directly linked with those of the dynamical p...
The initial and precise identification of the S-wave phase is a crucial step in the inverse analysis of dynamical mechanical parameters of rock mass. The efficiency and precision in this identification is directly linked with those of the dynamical p...
2018, 38(1): 37-49.
doi: 10.11883/bzycj-2016-0141
Abstract:
Based on the homogeneous multiphase theory and vaporization solving program of liquid water, the three-dimensional model of the gas-liquid two-phase fluid dynamics for new concentric canister launcher (CCL) self-launching system was built using the d...
Based on the homogeneous multiphase theory and vaporization solving program of liquid water, the three-dimensional model of the gas-liquid two-phase fluid dynamics for new concentric canister launcher (CCL) self-launching system was built using the d...
2018, 38(1): 50-59.
doi: 10.11883/bzycj-2016-0135
Abstract:
To better understand the mechanisms governing the shock focusing and jet formation, we simulated the interaction between the planar incident shock wave of the Mach number 1.23 and the SF6 heavy gas bubble using the high resolution computation schemes...
To better understand the mechanisms governing the shock focusing and jet formation, we simulated the interaction between the planar incident shock wave of the Mach number 1.23 and the SF6 heavy gas bubble using the high resolution computation schemes...
2018, 38(1): 60-65.
doi: 10.11883/bzycj-2016-0132
Abstract:
First, an empirical fit of the detonation product Hugoniot relationship through the C-J (Chapman Jouget) point was obtained by fitting 136 sets of the pressure-particle velocity experimental data of different explosives. Then, by Riemann integrating ...
First, an empirical fit of the detonation product Hugoniot relationship through the C-J (Chapman Jouget) point was obtained by fitting 136 sets of the pressure-particle velocity experimental data of different explosives. Then, by Riemann integrating ...
2018, 38(1): 66-75.
doi: 10.11883/bzycj-2016-0131
Abstract:
In order to investigate the influence of target structure on the protective performance, series of ballistic experiments and LS-DYNA 3D finite element code were adopted to research the failure mode and energy absorption mechanism of two-layer (steel/...
In order to investigate the influence of target structure on the protective performance, series of ballistic experiments and LS-DYNA 3D finite element code were adopted to research the failure mode and energy absorption mechanism of two-layer (steel/...
2018, 38(1): 76-84.
doi: 10.11883/bzycj-2016-0146
Abstract:
In this work we carried out ballistic impact tests on the liquid-filled structure to improve its protection capability. By adjusting the thickness match ratio to the structure's front panel to its rear ones, we studied how this ratio's influence on t...
In this work we carried out ballistic impact tests on the liquid-filled structure to improve its protection capability. By adjusting the thickness match ratio to the structure's front panel to its rear ones, we studied how this ratio's influence on t...
2018, 38(1): 85-91.
doi: 10.11883/bzycj-2016-0267
Abstract:
We studied the dynamically loaded quadrate sandwich plates constructed from titanium alloy plates with an aramid honeycomb core using high-velocity Mylar flyers produced by an electric gun, and classified systematically the deformation/failure modes ...
We studied the dynamically loaded quadrate sandwich plates constructed from titanium alloy plates with an aramid honeycomb core using high-velocity Mylar flyers produced by an electric gun, and classified systematically the deformation/failure modes ...
2018, 38(1): 92-97.
doi: 10.11883/bzycj-2016-0276
Abstract:
A modified 20 L standard spherical dust explosion vessel was used to systematically study the explosion characteristics of the methane/lycopodium hybrid mixtures. The explosion pressure (pex), the explosion pressure rise rate (dp/dt)ex and the explos...
A modified 20 L standard spherical dust explosion vessel was used to systematically study the explosion characteristics of the methane/lycopodium hybrid mixtures. The explosion pressure (pex), the explosion pressure rise rate (dp/dt)ex and the explos...
2018, 38(1): 98-105.
doi: 10.11883/bzycj-2016-0176
Abstract:
The present work aims to improve the speed and efficiency of rock excavation by forming a circular excavating surface with the coring technique so that the smallest possible charge of explosives would be needed. At first a numerical simulation was co...
The present work aims to improve the speed and efficiency of rock excavation by forming a circular excavating surface with the coring technique so that the smallest possible charge of explosives would be needed. At first a numerical simulation was co...
2018, 38(1): 106-111.
doi: 10.11883/bzycj-2017-0031
Abstract:
In this paper, in view of the damage criteria for air shock waves damaging biological targets, we studied the overpressure-impulse damage criterion that makes up for the deficiencies of the single damage criterion. According to the general damage par...
In this paper, in view of the damage criteria for air shock waves damaging biological targets, we studied the overpressure-impulse damage criterion that makes up for the deficiencies of the single damage criterion. According to the general damage par...
2018, 38(1): 112-118.
doi: 10.11883/bzycj-2016-0148
Abstract:
In this work we proposed a method based on ensemble empirical mode decomposition (EEMD) and wavelet threshold for eliminating the noise contained a in blasting signal. Following this method, the signal is firstly decomposed using the ensemble empiric...
In this work we proposed a method based on ensemble empirical mode decomposition (EEMD) and wavelet threshold for eliminating the noise contained a in blasting signal. Following this method, the signal is firstly decomposed using the ensemble empiric...
2018, 38(1): 119-123.
doi: 10.11883/bzycj-2017-0018
Abstract:
This paper simulated the dynamic responses of hollow tempered laminated glass under the blast load based on a multi-material ALE algorithm using the software LS-DYNA, and analyzed the effect of changing the PVB interlayer property and the thickness o...
This paper simulated the dynamic responses of hollow tempered laminated glass under the blast load based on a multi-material ALE algorithm using the software LS-DYNA, and analyzed the effect of changing the PVB interlayer property and the thickness o...
2018, 38(1): 124-132.
doi: 10.11883/bzycj-2016-0248
Abstract:
Coal mine rescue capsules are an indispensable equipment for safe production and effective rescue in coal mines, and their efficiency and stability directly determine the rescue efficiency and the antiknock performance in coal mines. In this paper, a...
Coal mine rescue capsules are an indispensable equipment for safe production and effective rescue in coal mines, and their efficiency and stability directly determine the rescue efficiency and the antiknock performance in coal mines. In this paper, a...
2018, 38(1): 133-139.
doi: 10.11883/bzycj-2016-0278
Abstract:
In order to study the flame propagation process of cornstarch dust explosion, a series of experiments with different dust concentrations were conducted in a small-scale experimental platform. A computational method of the propagation velocity of corn...
In order to study the flame propagation process of cornstarch dust explosion, a series of experiments with different dust concentrations were conducted in a small-scale experimental platform. A computational method of the propagation velocity of corn...
2018, 38(1): 140-147.
doi: 10.11883/bzycj-2017-0017
Abstract:
In this study four different honeycomb cells were fabricated by changing the original folding angle based on the Tachi-origami pattern that is at present being studied widely, and sandwich beams were made from them by arranging them specifically. The...
In this study four different honeycomb cells were fabricated by changing the original folding angle based on the Tachi-origami pattern that is at present being studied widely, and sandwich beams were made from them by arranging them specifically. The...
2018, 38(1): 148-154.
doi: 10.11883/bzycj-2017-0014
Abstract:
The failure process of an explosively driven TA2 alloy cylinder is related with its material, structure, loading, and so on, with its fracture behavior shown in various ways. In this paper we investigated the mechanism underlying this failure under d...
The failure process of an explosively driven TA2 alloy cylinder is related with its material, structure, loading, and so on, with its fracture behavior shown in various ways. In this paper we investigated the mechanism underlying this failure under d...
2018, 38(1): 155-163.
doi: 10.11883/bzycj-2016-0150
Abstract:
In this study, to solve the stiff source terms resulting from chemical reactions in detonation simulation, we examined the one step method, the asymptotic approach, the α quasi steady state method (αQSS) and the point implicit and compared their perf...
In this study, to solve the stiff source terms resulting from chemical reactions in detonation simulation, we examined the one step method, the asymptotic approach, the α quasi steady state method (αQSS) and the point implicit and compared their perf...
2018, 38(1): 164-173.
doi: 10.11883/bzycj-2017-0020
Abstract:
In this work, based on the theory of dynamic spherical cavity expansion, we presented a force model of penetrating projectiles with an elliptical cross-section to study their penetration performance and, using this model, calculated the resistance of...
In this work, based on the theory of dynamic spherical cavity expansion, we presented a force model of penetrating projectiles with an elliptical cross-section to study their penetration performance and, using this model, calculated the resistance of...
2018, 38(1): 174-182.
doi: 10.11883/bzycj-2017-0024
Abstract:
In the present study, based on the theories of shock wave propagation and nonlinear reflection and focusing, we modelled the reflection and focusing of the underwater explosion shock waves by an ellipsoidal reflector, where the shock wave characteris...
In the present study, based on the theories of shock wave propagation and nonlinear reflection and focusing, we modelled the reflection and focusing of the underwater explosion shock waves by an ellipsoidal reflector, where the shock wave characteris...
Critical penetration velocity of prefabricated fragment in penetrating homogeneous armor steel plate
2018, 38(1): 183-190.
doi: 10.11883/bzycj-2016-0116
Abstract:
In this study, we at first made a mechanical analysis of the process of the prefabricated fragment penetrating fully the homogeneous armor plate using theoretical calculation and experimental study, and derived the penetration velocity respectively f...
In this study, we at first made a mechanical analysis of the process of the prefabricated fragment penetrating fully the homogeneous armor plate using theoretical calculation and experimental study, and derived the penetration velocity respectively f...
2018, 38(1): 191-196.
doi: 10.11883/bzycj-2016-0140
Abstract:
In this work we put forward a new method for calculating the detonation velocity of composite explosive based on the concept of the ideal composite explosive model, and constructed the characteristic detonation velocity equation of air and aluminum w...
In this work we put forward a new method for calculating the detonation velocity of composite explosive based on the concept of the ideal composite explosive model, and constructed the characteristic detonation velocity equation of air and aluminum w...
2018, 38(1): 197-203.
doi: 10.11883/bzycj-2016-0123
Abstract:
In this study we carried out internal blast tests on TNT, PBXN-109, AFX-757 and CL-20 based explosives and measured the concrete cavity volumes of several explosives tested to study the characteristic work capability of non-ideal explosives. A calcul...
In this study we carried out internal blast tests on TNT, PBXN-109, AFX-757 and CL-20 based explosives and measured the concrete cavity volumes of several explosives tested to study the characteristic work capability of non-ideal explosives. A calcul...
2018, 38(1): 204-211.
doi: 10.11883/bzycj-2016-0143
Abstract:
In this paper we simulated the dynamic response of stainless steel-concrete-steel double-skin tubular columns under low speed lateral impact loading using a software of finite element analysis, examined the effect of the hollow rate on the impacting ...
In this paper we simulated the dynamic response of stainless steel-concrete-steel double-skin tubular columns under low speed lateral impact loading using a software of finite element analysis, examined the effect of the hollow rate on the impacting ...
2018, 38(1): 212-216.
doi: 10.11883/bzycj-2016-0152
Abstract:
In this paper, we presented for the first time a model of the propellant combustion heat radiation propagation by constructing the physical-mathematical model and verifying with experiment. We performed tests under the free field conditions of the si...
In this paper, we presented for the first time a model of the propellant combustion heat radiation propagation by constructing the physical-mathematical model and verifying with experiment. We performed tests under the free field conditions of the si...
2018, 38(1): 217-223.
doi: 10.11883/bzycj-2017-0034
Abstract:
In this work, based on the Thomas-Fermi statistical model, we modified the calculation method of the Wu-Jing parameters R and investigated the effect of the electronic thermal motion on such parameters as the particle number, the internal energy, and...
In this work, based on the Thomas-Fermi statistical model, we modified the calculation method of the Wu-Jing parameters R and investigated the effect of the electronic thermal motion on such parameters as the particle number, the internal energy, and...
2018, 38(1): 224-232.
doi: 10.11883/bzycj-2016-0305
Abstract:
The explosive spalling probability of high-strength concrete will increase with the increase of water content, which shows that the vapour pressure is one of the main factors causing the explosive spalling, and this pressure affects the strength thro...
The explosive spalling probability of high-strength concrete will increase with the increase of water content, which shows that the vapour pressure is one of the main factors causing the explosive spalling, and this pressure affects the strength thro...
2018, 38(1): 233-240.
doi: 10.11883/bzycj-2016-0298
Abstract:
In order to rationally design the plane layout scheme of drilling holes for explosion compacting the loess embankment of an existing highway, this paper took the loess embankment of a highway reinforced by explosion compaction(EC) as an example and s...
In order to rationally design the plane layout scheme of drilling holes for explosion compacting the loess embankment of an existing highway, this paper took the loess embankment of a highway reinforced by explosion compaction(EC) as an example and s...
