2019 Vol. 39, No. 9
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2019, 39(9): 092101.
doi: 10.11883/bzycj-2018-0208
Abstract:
In recent years, Rotary Detonation Engine (RDE) has attracted more and more attention because of their higher combustion efficiency than conventional aerospace engines. For the key problems, ignition technique is particularly important. In order to e...
In recent years, Rotary Detonation Engine (RDE) has attracted more and more attention because of their higher combustion efficiency than conventional aerospace engines. For the key problems, ignition technique is particularly important. In order to e...
2019, 39(9): 092102.
doi: 10.11883/bzycj-2018-0183
Abstract:
Due to the complex form and long duration of the load from a confined explosion, it is usually difficult to propose an uniform simplified formula to describe the confined blast load effectively, which can be applied in the predicting the dynamic resp...
Due to the complex form and long duration of the load from a confined explosion, it is usually difficult to propose an uniform simplified formula to describe the confined blast load effectively, which can be applied in the predicting the dynamic resp...
2019, 39(9): 092201.
doi: 10.11883/bzycj-2018-0210
Abstract:
Since the information of detonation product is transmitted outward in the form of compression wave during underwater explosion, the purpose of this paper is to explore how to determine the equation of state (EOS) of detonation products using underwat...
Since the information of detonation product is transmitted outward in the form of compression wave during underwater explosion, the purpose of this paper is to explore how to determine the equation of state (EOS) of detonation products using underwat...
2019, 39(9): 092202.
doi: 10.11883/bzycj-2018-0255
Abstract:
In order to solve the issues of high cost and large risk factor of ammunition explosion in the battlefield damage test, the method of dimensional analysis is used to analyze the establishment method of cylindrical ammunition similar models. The explo...
In order to solve the issues of high cost and large risk factor of ammunition explosion in the battlefield damage test, the method of dimensional analysis is used to analyze the establishment method of cylindrical ammunition similar models. The explo...
2019, 39(9): 092301.
doi: 10.11883/bzycj-2018-0256
Abstract:
Four kinds of aluminum/ titanium hydride/ polytetrafluoroethylene (Al/TiH2/PTFE) samples with different TiH2 contents were prepared by the mixed/compression/sintering method. The dynamic compression mechanical properties, impact sensitivity and react...
Four kinds of aluminum/ titanium hydride/ polytetrafluoroethylene (Al/TiH2/PTFE) samples with different TiH2 contents were prepared by the mixed/compression/sintering method. The dynamic compression mechanical properties, impact sensitivity and react...
2019, 39(9): 093101.
doi: 10.11883/bzycj-2018-0193
Abstract:
In this paper, a series of static/dynamic tensile tests are performed for unidirectionally reinforced GFRP composites. Using the combination of high-speed photography and DIC (digital image correlation) technology, true stress-strain curves in differ...
In this paper, a series of static/dynamic tensile tests are performed for unidirectionally reinforced GFRP composites. Using the combination of high-speed photography and DIC (digital image correlation) technology, true stress-strain curves in differ...
2019, 39(9): 093102.
doi: 10.11883/bzycj-2018-0191
Abstract:
To explore the mechanical behavior of SFRC beams subjected to both impact and fire loadings, 4 beams were tested with high-performance drop-weight test system, four point bending test machine and assembled electric furnace. The beams were firstly sub...
To explore the mechanical behavior of SFRC beams subjected to both impact and fire loadings, 4 beams were tested with high-performance drop-weight test system, four point bending test machine and assembled electric furnace. The beams were firstly sub...
2019, 39(9): 093103.
doi: 10.11883/bzycj-2018-0270
Abstract:
The dynamic strength of three kinds of ice specimens at −18 ℃ were tested by the split Hopkinson pressure bar (SHPB) method. The pulse-shaping technology was used to achieve constant strain rate loading and stress equalization. The double-peak phenom...
The dynamic strength of three kinds of ice specimens at −18 ℃ were tested by the split Hopkinson pressure bar (SHPB) method. The pulse-shaping technology was used to achieve constant strain rate loading and stress equalization. The double-peak phenom...
2019, 39(9): 093104.
doi: 10.11883/bzycj-2018-0221
Abstract:
It is very important to establish the material model for the explosive forming and penetration simulation of ZrCuNiAlAg bulk amorphous alloy. In this paper, the JH-2 model parameters of the ZrCuNiAlAg bulk amorphous alloy were calculated by the exper...
It is very important to establish the material model for the explosive forming and penetration simulation of ZrCuNiAlAg bulk amorphous alloy. In this paper, the JH-2 model parameters of the ZrCuNiAlAg bulk amorphous alloy were calculated by the exper...
2019, 39(9): 093201.
doi: 10.11883/bzycj-2018-0212
Abstract:
Based on the ALE algorithm in LS-DYNA software, the numerical simulation of the pulsation process of underwater explosion near water surface is carried out and compared with the experimental results. The correctness of the finite element model and pa...
Based on the ALE algorithm in LS-DYNA software, the numerical simulation of the pulsation process of underwater explosion near water surface is carried out and compared with the experimental results. The correctness of the finite element model and pa...
Projectile target response model for normal penetration process based on mechanical vibration theory
2019, 39(9): 093301.
doi: 10.11883/bzycj-2018-0242
Abstract:
In order to provide exact mechanics input for anti-high-overload optimal design of penetration fuze, the mechanical vibration theory is introduced into theoretical analysis on normal penetration and a projectile target response model combining the ri...
In order to provide exact mechanics input for anti-high-overload optimal design of penetration fuze, the mechanical vibration theory is introduced into theoretical analysis on normal penetration and a projectile target response model combining the ri...
2019, 39(9): 094101.
doi: 10.11883/bzycj-2018-0175
Abstract:
In order to increase the reliability to obtain fragments’ velocities and velocity attenuation coefficients in static explosion experiments, a vision-measurement method based on high-speed photography is proposed in this paper. We use high speed camer...
In order to increase the reliability to obtain fragments’ velocities and velocity attenuation coefficients in static explosion experiments, a vision-measurement method based on high-speed photography is proposed in this paper. We use high speed camer...
2019, 39(9): 094201.
doi: 10.11883/bzycj-2018-0312
Abstract:
To obtain more accurate images of the shock wave formation process, pressure and flame propagation velocity, and flow field evolution of flame-inert flame retarding interaction duringpremixed gas/air deflagration in a blast shock tube, by analyzing t...
To obtain more accurate images of the shock wave formation process, pressure and flame propagation velocity, and flow field evolution of flame-inert flame retarding interaction duringpremixed gas/air deflagration in a blast shock tube, by analyzing t...
2019, 39(9): 095101.
doi: 10.11883/bzycj-2018-0073
Abstract:
In order to investigate the properties of crack fracture time, propagation speed and arrest period in the surrounding rock of tunnel under different impact loading speed, the dynamic tests were performed by self-developed adjustable speed drop weight...
In order to investigate the properties of crack fracture time, propagation speed and arrest period in the surrounding rock of tunnel under different impact loading speed, the dynamic tests were performed by self-developed adjustable speed drop weight...
2019, 39(9): 095401.
doi: 10.11883/bzycj-2018-0249
Abstract:
In order to study the characteristics of methane explosion under different vented end faces, explosion tests of methane with different concentrations are carried out in a vertical 5 L quartz duct with the upper end sealed by different films. The resu...
In order to study the characteristics of methane explosion under different vented end faces, explosion tests of methane with different concentrations are carried out in a vertical 5 L quartz duct with the upper end sealed by different films. The resu...
2019, 39(9): 095402.
doi: 10.11883/bzycj-2018-0121
Abstract:
The explosion characteristics of methanol under different ambient temperature, material temperature and spray concentration were investigated by using the 20 L spherical explosion experiment system. The results show that the explosion limit of methan...
The explosion characteristics of methanol under different ambient temperature, material temperature and spray concentration were investigated by using the 20 L spherical explosion experiment system. The results show that the explosion limit of methan...
2019, 39(9): 095403.
doi: 10.11883/bzycj-2018-0265
Abstract:
In order to study the variation law of coal dust explosion pressure with different metamorphic degrees, the maximum pressure pmax and maximum pressure rise rate (dp/dt)max are characterized. The variation of explosion pressure characteristics of lign...
In order to study the variation law of coal dust explosion pressure with different metamorphic degrees, the maximum pressure pmax and maximum pressure rise rate (dp/dt)max are characterized. The variation of explosion pressure characteristics of lign...
