2019 Vol. 39, No. 2
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2019, 39(2): 022101.
doi: 10.11883/bzycj-2017-0284
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Abstract:
In the flow where the shock wave, the flame and the jet exist simultaneously, the successful process of deflagration to detonation transition (DDT) is the key to the pulse detonation engine (PDE). One kind of injector was designed, and the feasibilit...
In the flow where the shock wave, the flame and the jet exist simultaneously, the successful process of deflagration to detonation transition (DDT) is the key to the pulse detonation engine (PDE). One kind of injector was designed, and the feasibilit...
2019, 39(2): 022201.
doi: 10.11883/bzycj-2017-0351
Abstract:
In order to make up for the shortcomings in protective structure design based on simple anti-blast or anti-armor load, a theoretical model was proposed for evaluating the protective capability of sandwich bulkhead in the close range of a warhead expl...
In order to make up for the shortcomings in protective structure design based on simple anti-blast or anti-armor load, a theoretical model was proposed for evaluating the protective capability of sandwich bulkhead in the close range of a warhead expl...
2019, 39(2): 022301.
doi: 10.11883/bzycj-2017-0412
Abstract:
Based on the previously proposed method of characteristics containing an entropy variate, the non-ideal effect of aluminum combustion is portrayed by controlling the energy release in non-isentropic flow. Combined with a simple Chapman-Jouguet model ...
Based on the previously proposed method of characteristics containing an entropy variate, the non-ideal effect of aluminum combustion is portrayed by controlling the energy release in non-isentropic flow. Combined with a simple Chapman-Jouguet model ...
2019, 39(2): 023101.
doi: 10.11883/bzycj-2018-0284
Abstract:
n order to study the blast-resistant protective effect of the aluminum foam slab as porous energy absorbing material on the engineering structure, using an outdoor explosion test, the dynamic response and failure modes of reinforced concrete (RC) sla...
n order to study the blast-resistant protective effect of the aluminum foam slab as porous energy absorbing material on the engineering structure, using an outdoor explosion test, the dynamic response and failure modes of reinforced concrete (RC) sla...
2019, 39(2): 023102.
doi: 10.11883/bzycj-2018-0084
Abstract:
Dynamic behaviors of metal materials are very complex under extreme loading conditions such as high pressure and high strain rate loading. Actually, many mechanisms and effects are contained in the dynamic response of metal materials. In this paper, ...
Dynamic behaviors of metal materials are very complex under extreme loading conditions such as high pressure and high strain rate loading. Actually, many mechanisms and effects are contained in the dynamic response of metal materials. In this paper, ...
2019, 39(2): 023301.
doi: 10.11883/bzycj-2017-0368
Abstract:
The LS-DYNA was used to simulate the process of a rigid projectile normally penetrating into a concrete target. Based on the two threshold values of ultimate compressive strain and ultimate tensile strain of the concrete, the cavity expansion respons...
The LS-DYNA was used to simulate the process of a rigid projectile normally penetrating into a concrete target. Based on the two threshold values of ultimate compressive strain and ultimate tensile strain of the concrete, the cavity expansion respons...
2019, 39(2): 023302.
doi: 10.11883/bzycj-2018-0009
Abstract:
We analyzed the influence of the impact energy on the damage degree of the front and rear walls and verified it by experiments. The results show that the hydrodynamic ram formed by a high-speed fragment impacting the liquid-filled vessel affects the ...
We analyzed the influence of the impact energy on the damage degree of the front and rear walls and verified it by experiments. The results show that the hydrodynamic ram formed by a high-speed fragment impacting the liquid-filled vessel affects the ...
2019, 39(2): 023303.
doi: 10.11883/bzycj-2017-0319
Abstract:
In order to evaluate the anti-collision characteristics of a side tank impacted by a large object, the anti-collision performances of the outer side shell and the inner side shell under different impact velocity and tank waterlines were analyzed on t...
In order to evaluate the anti-collision characteristics of a side tank impacted by a large object, the anti-collision performances of the outer side shell and the inner side shell under different impact velocity and tank waterlines were analyzed on t...
2019, 39(2): 023304.
doi: 10.11883/bzycj-2018-0023
Abstract:
In order to find out whether the small size fragment can penetrate the ordinary single-soldier bulletproof clothes and bulletproof helmets effectively, the spherical fragment has been selected as the object, obtained the limit velocities of the 0.2 g...
In order to find out whether the small size fragment can penetrate the ordinary single-soldier bulletproof clothes and bulletproof helmets effectively, the spherical fragment has been selected as the object, obtained the limit velocities of the 0.2 g...
2019, 39(2): 024101.
doi: 10.11883/bzycj-2018-0007
Abstract:
In this article, to figure out an optimal pretightening load selection for a closure flange structure under intense impulsive loading, we designed an experimental system based on the SHPB platform and the hydraulic principle and investigated the dyna...
In this article, to figure out an optimal pretightening load selection for a closure flange structure under intense impulsive loading, we designed an experimental system based on the SHPB platform and the hydraulic principle and investigated the dyna...
2019, 39(2): 024102.
doi: 10.11883/bzycj-2017-0321
Abstract:
The collective effect of underwater explosion shock wave and bubble pulsation does not meet the traditional geometric similarity relation, and the scaled model test must be carried out in a closed pressurized tank or centrifuge apparatus. Through the...
The collective effect of underwater explosion shock wave and bubble pulsation does not meet the traditional geometric similarity relation, and the scaled model test must be carried out in a closed pressurized tank or centrifuge apparatus. Through the...
2019, 39(2): 024103.
doi: 10.11883/bzycj-2018-0039
Abstract:
For the purpose of accurate measurement of temperature and pressure changes in cavity explosion, a gas temperature and pressure after explosion measurement system was built for closed explosion based on K-type thermocouple and pressure transmitter. B...
For the purpose of accurate measurement of temperature and pressure changes in cavity explosion, a gas temperature and pressure after explosion measurement system was built for closed explosion based on K-type thermocouple and pressure transmitter. B...
2019, 39(2): 024201.
doi: 10.11883/bzycj-2017-0393
Abstract:
Blasting mining is the most important part of the total cost control in an open pit mine, and numerical simulation is an effective method to optimize the design of blasting mining and to analyse blasting effect. By using the continuum-discontinuum el...
Blasting mining is the most important part of the total cost control in an open pit mine, and numerical simulation is an effective method to optimize the design of blasting mining and to analyse blasting effect. By using the continuum-discontinuum el...
2019, 39(2): 024202.
doi: 10.11883/bzycj-2017-0390
Abstract:
The finite particle method(FPM) is an important improvement for the smoothed particle hydrodynamics(SPH) method, which effectively improves the calculation accuracy of boundary particles. However, when the discontinuous physical field is solved by th...
The finite particle method(FPM) is an important improvement for the smoothed particle hydrodynamics(SPH) method, which effectively improves the calculation accuracy of boundary particles. However, when the discontinuous physical field is solved by th...
2019, 39(2): 025101.
doi: 10.11883/bzycj-2017-0407
Abstract:
In order to improve the anti-bird strike performance of a wing leading edge to meet the airworthiness requirements, the simulation-test-simulation methodology was adopted for the optimization of the leading edge. Firstly, the anti-bird strike respons...
In order to improve the anti-bird strike performance of a wing leading edge to meet the airworthiness requirements, the simulation-test-simulation methodology was adopted for the optimization of the leading edge. Firstly, the anti-bird strike respons...
2019, 39(2): 025201.
doi: 10.11883/bzycj-2017-0414
Abstract:
In order to study the blasting demolition of the cooling tower with compound incisions, the plastic hinge theory is used to analyze the motion state of the cooling tower in the whole collapse process. The mathematical model for the tower body instant...
In order to study the blasting demolition of the cooling tower with compound incisions, the plastic hinge theory is used to analyze the motion state of the cooling tower in the whole collapse process. The mathematical model for the tower body instant...
2019, 39(2): 025202.
doi: 10.11883/bzycj-2017-0415
Abstract:
It's important to calculate the superposed vibration velocity of multi-segments' millisecond blasting for low vibration velocity control in urban tunnels, but each segments of non-electric detonators have delay errors which can't be ignore in vibrati...
It's important to calculate the superposed vibration velocity of multi-segments' millisecond blasting for low vibration velocity control in urban tunnels, but each segments of non-electric detonators have delay errors which can't be ignore in vibrati...
2019, 39(2): 025401.
doi: 10.11883/bzycj-2017-0436
Abstract:
An experimental setup which can withstand high pressure with good visibility was built. Flame propagation characteristics of lycopodium dust explosion were investigated under explosion pressure accumulation conditions. The experimental results showed...
An experimental setup which can withstand high pressure with good visibility was built. Flame propagation characteristics of lycopodium dust explosion were investigated under explosion pressure accumulation conditions. The experimental results showed...
2019, 39(2): 025402.
doi: 10.11883/bzycj-2018-0147
Abstract:
In order to study the effect of CO2 and ultrafine water mist on the initial 9.5% methane/air explosion characteristics, a high speed schlieren system and a constant volume combustion bomb were used to study the 9.5% methane/air explosion characterist...
In order to study the effect of CO2 and ultrafine water mist on the initial 9.5% methane/air explosion characteristics, a high speed schlieren system and a constant volume combustion bomb were used to study the 9.5% methane/air explosion characterist...
2019, 39(2): 025403.
doi: 10.11883/bzycj-2017-0371
Abstract:
Because the structure and shape of processing equipment in petrochemical industry are complex normally, the explosion overpressure of gas is hard to be predicted by traditional explosion overpressure models. Base on the computational fluid dynamics s...
Because the structure and shape of processing equipment in petrochemical industry are complex normally, the explosion overpressure of gas is hard to be predicted by traditional explosion overpressure models. Base on the computational fluid dynamics s...
