2018 Vol. 38, No. 5
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2018, 38(5): 937-947.
doi: 10.11883/bzycj-2017-0329
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Abstract:
In order to study the propagating characteristics of rotating detonation waves in the plane-radial structure, experiments were carried out in a plane-radial rotating detonation engine (RDE) with a variable reactants mass flow rate and equivalence rat...
In order to study the propagating characteristics of rotating detonation waves in the plane-radial structure, experiments were carried out in a plane-radial rotating detonation engine (RDE) with a variable reactants mass flow rate and equivalence rat...
2018, 38(5): 948-956.
doi: 10.11883/bzycj-2017-0328
Abstract:
The smoothed particle hydrodynamics (SPH) method is widely used in debris cloud simulation under hypervelocity impact. The SPH solver in AUTODYN was employed to investigate the effects of the no-failure model, the Grady failure model and the maximum ...
The smoothed particle hydrodynamics (SPH) method is widely used in debris cloud simulation under hypervelocity impact. The SPH solver in AUTODYN was employed to investigate the effects of the no-failure model, the Grady failure model and the maximum ...
2018, 38(5): 957-965.
doi: 10.11883/bzycj-2017-0075
Abstract:
Impact-induced initiation criteria of Al particles reinforced PTFE (PTFE/Al) prepared by compression/sintering were studied by split Hopkinson pressure bar (SHPB) and high speed photography in this work. SHPB systems comprising of either steel or alu...
Impact-induced initiation criteria of Al particles reinforced PTFE (PTFE/Al) prepared by compression/sintering were studied by split Hopkinson pressure bar (SHPB) and high speed photography in this work. SHPB systems comprising of either steel or alu...
2018, 38(5): 966-976.
doi: 10.11883/bzycj-2017-0090
Abstract:
In order to investigate the damage modes and failure mechanism of the concrete dome of the liquefied natural gas (LNG) storage tank subjected to impact by a rigid circular cylinder, the finite element (FE) model of the outer concrete tank of the 160 ...
In order to investigate the damage modes and failure mechanism of the concrete dome of the liquefied natural gas (LNG) storage tank subjected to impact by a rigid circular cylinder, the finite element (FE) model of the outer concrete tank of the 160 ...
2018, 38(5): 977-984.
doi: 10.11883/bzycj-2017-0013
Abstract:
In order to accurately and efficiently simulate the blasting demolition project, a simplified constitutive model of reinforced concrete has been proposed by using the method of combination modulus, based on the concrete damage plasticity model in LS-...
In order to accurately and efficiently simulate the blasting demolition project, a simplified constitutive model of reinforced concrete has been proposed by using the method of combination modulus, based on the concrete damage plasticity model in LS-...
2018, 38(5): 985-992.
doi: 10.11883/bzycj-2017-0029
Abstract:
The full moment tensor inversion is an important tool to monitor underground nuclear tests, thus has been employed in this paper to analyze the recorded data of seven underground nuclear tests and three natural earthquakes in the region of Eastern Ka...
The full moment tensor inversion is an important tool to monitor underground nuclear tests, thus has been employed in this paper to analyze the recorded data of seven underground nuclear tests and three natural earthquakes in the region of Eastern Ka...
2018, 38(5): 993-998.
doi: 10.11883/bzycj-2016-0003
Abstract:
Aluminum dust explosion experiments have been carried out in the rectangular pipe dust explosion device to study on the effects of the ignition delay time, the dust particle size, and the dust concentration on the maximum explosion pressure as well a...
Aluminum dust explosion experiments have been carried out in the rectangular pipe dust explosion device to study on the effects of the ignition delay time, the dust particle size, and the dust concentration on the maximum explosion pressure as well a...
2018, 38(5): 999-1005.
doi: 10.11883/bzycj-2016-0052
Abstract:
In order to simulate the implosive compression process of a multilayer coiled solenoid and its associated interfacial instability by using the smooth particle hydrodynamics (SPH) solver, the AUTODYN user-defined subroutines have been employed to buil...
In order to simulate the implosive compression process of a multilayer coiled solenoid and its associated interfacial instability by using the smooth particle hydrodynamics (SPH) solver, the AUTODYN user-defined subroutines have been employed to buil...
2018, 38(5): 1006-1012.
doi: 10.11883/bzycj-2016-0194
Abstract:
Based on a large number of measured vibration signals of deep hole bench blasting in near field, this paper has contributed the trend mainly to the nonlinear distortion and the low frequency interference superposition with a large amplitude pulse inp...
Based on a large number of measured vibration signals of deep hole bench blasting in near field, this paper has contributed the trend mainly to the nonlinear distortion and the low frequency interference superposition with a large amplitude pulse inp...
2018, 38(5): 1013-1022.
doi: 10.11883/bzycj-2017-0039
Abstract:
The throttling ring is the key component of a gun recoil brake, erosion wear is the main reason for the failure of the throttling ring. In order to improve the erosive resistance ability and the inherent reliability of throttling ring, with the help ...
The throttling ring is the key component of a gun recoil brake, erosion wear is the main reason for the failure of the throttling ring. In order to improve the erosive resistance ability and the inherent reliability of throttling ring, with the help ...
2018, 38(5): 1023-1030.
doi: 10.11883/bzycj-2017-0043
Abstract:
In the present paper, based on the compressible elastic-plastic response penetration model of plain concrete proposed by Forrestal, a dynamic spherical cavity-expansion penetration model for reinforced concrete targets is constructed with considering...
In the present paper, based on the compressible elastic-plastic response penetration model of plain concrete proposed by Forrestal, a dynamic spherical cavity-expansion penetration model for reinforced concrete targets is constructed with considering...
2018, 38(5): 1031-1038.
doi: 10.11883/bzycj-2017-0049
Abstract:
In a 12 m long seamless stainless steel pipe, the influence of ignition energy on the propagation characteristics of propane air mixture in the closed tube and the influence of shock wave on the dynamic loading of the pipe wall are investigated. The ...
In a 12 m long seamless stainless steel pipe, the influence of ignition energy on the propagation characteristics of propane air mixture in the closed tube and the influence of shock wave on the dynamic loading of the pipe wall are investigated. The ...
2018, 38(5): 1039-1044.
doi: 10.11883/bzycj-2017-0055
Abstract:
In order to understand the spallation of a target subjected to the impact load of an explosively formed projectile (EFP), on the basis of wave mechanics and basic assumptions, a mechanical model was developed to describe the spallation of the finite-...
In order to understand the spallation of a target subjected to the impact load of an explosively formed projectile (EFP), on the basis of wave mechanics and basic assumptions, a mechanical model was developed to describe the spallation of the finite-...
2018, 38(5): 1045-1050.
doi: 10.11883/bzycj-2017-0056
Abstract:
Quasi-static pressure is important for the design of explosion containment vessels. Experiments of the spherical vessel under blast loading, in which the quasi-static pressure was measured by the pressure sensors of two different installations, i.e. ...
Quasi-static pressure is important for the design of explosion containment vessels. Experiments of the spherical vessel under blast loading, in which the quasi-static pressure was measured by the pressure sensors of two different installations, i.e. ...
2018, 38(5): 1051-1056.
doi: 10.11883/bzycj-2017-0057
Abstract:
In order to understand the fracture law of rock by shock wave in deep water, an electric pulse fracturing device with hydrostatic pressure up to 35 MPa was established, which can simulate the confining pressure of 3 000 m underground. The experiments...
In order to understand the fracture law of rock by shock wave in deep water, an electric pulse fracturing device with hydrostatic pressure up to 35 MPa was established, which can simulate the confining pressure of 3 000 m underground. The experiments...
2018, 38(5): 1057-1063.
doi: 10.11883/bzycj-2017-0060
Abstract:
Aiming at the flame propagation problem of gas deflagration in a short tube with one end closed and the other end open, by referring to the flame propagation model proposed by Clanet, et al and Bychkov, et al, and under the condition of adiabatic and...
Aiming at the flame propagation problem of gas deflagration in a short tube with one end closed and the other end open, by referring to the flame propagation model proposed by Clanet, et al and Bychkov, et al, and under the condition of adiabatic and...
2018, 38(5): 1071-1082.
doi: 10.11883/bzycj-2017-0070
Abstract:
Damaging effects of blast waves on tempered glasses were experimentally investigated to explore the blast damage threshold of the tempered glasses. The blast shock wave parameters were tested in each experiment, and the experimental overpressure-time...
Damaging effects of blast waves on tempered glasses were experimentally investigated to explore the blast damage threshold of the tempered glasses. The blast shock wave parameters were tested in each experiment, and the experimental overpressure-time...
2018, 38(5): 1083-1090.
doi: 10.11883/bzycj-2017-0078
Abstract:
In order to understand the law dominating the process of an ogival projectile perforating a medium thickness concrete target, the tests of the ogival projectiles of 60 mm diameter perforating concrete targets of (10-30)D thickness were carried out. T...
In order to understand the law dominating the process of an ogival projectile perforating a medium thickness concrete target, the tests of the ogival projectiles of 60 mm diameter perforating concrete targets of (10-30)D thickness were carried out. T...
2018, 38(5): 1091-1098.
doi: 10.11883/bzycj-2017-0082
Abstract:
In order to investigate spalling response and the spall threshold of Ti17 alloy under laser shock peening (LSP), the surface of a 5 mm-thick sample was shocked by multiple laser shots with the shot number ranging one to eight shots. The laser employe...
In order to investigate spalling response and the spall threshold of Ti17 alloy under laser shock peening (LSP), the surface of a 5 mm-thick sample was shocked by multiple laser shots with the shot number ranging one to eight shots. The laser employe...
2018, 38(5): 1099-1105.
doi: 10.11883/bzycj-2017-0087
Abstract:
In order to investigate the overpressure and flame propagation of premixed combustible gas explosion venting in a large space, experiments of different concentrations of ethylene gas and two different vent sizes have been carried out in a rectangular...
In order to investigate the overpressure and flame propagation of premixed combustible gas explosion venting in a large space, experiments of different concentrations of ethylene gas and two different vent sizes have been carried out in a rectangular...
2018, 38(5): 1106-1114.
doi: 10.11883/bzycj-2017-0109
Abstract:
The effects of blockage ratio, obstacles spacing and obstacles spatial position on the flame acceleration and explosion process of propane-air were studied in this paper.The unsteady combustion process was calculated by using the Reynolds averaged (R...
The effects of blockage ratio, obstacles spacing and obstacles spatial position on the flame acceleration and explosion process of propane-air were studied in this paper.The unsteady combustion process was calculated by using the Reynolds averaged (R...
2018, 38(5): 1115-1120.
doi: 10.11883/bzycj-2017-0091
Abstract:
Blasting is an indispensable construction method to human beings. However, in the meanwhile, the rock vibration caused by blasting is one of blasting hazards. Due to the complicated geology, the peak particle velocity is a random variable approximate...
Blasting is an indispensable construction method to human beings. However, in the meanwhile, the rock vibration caused by blasting is one of blasting hazards. Due to the complicated geology, the peak particle velocity is a random variable approximate...
High-frequency spiral detonation end-on records of premixed C2H2+2.5O2 with different argon dilution
2018, 38(5): 1121-1129.
doi: 10.11883/bzycj-2017-0098
Abstract:
In order to study the internal structure of premixed gas detonation, detonation experiments and calculation analysis of C2H2+2.5O2 premixed gas diluted with different concentrations of argon were performed. Firstly, the detonation experiment was carr...
In order to study the internal structure of premixed gas detonation, detonation experiments and calculation analysis of C2H2+2.5O2 premixed gas diluted with different concentrations of argon were performed. Firstly, the detonation experiment was carr...
2018, 38(5): 1130-1136.
doi: 10.11883/bzycj-2017-0101
Abstract:
In order to investigate explosion characteristics of micro-sized aluminum dust, a series of experiments were carried out to reveal the influences of ignition delay time, dust particle size and dust concentration on explosion parameters of aluminum du...
In order to investigate explosion characteristics of micro-sized aluminum dust, a series of experiments were carried out to reveal the influences of ignition delay time, dust particle size and dust concentration on explosion parameters of aluminum du...
2018, 38(5): 1137-1144.
doi: 10.11883/bzycj-2017-0107
Abstract:
Dynamic shear properties and failure mechanism of Ti-6Al-4V were studied at strain rates in excess of 104 s-1, with a new loading method based on the split Hopkinson pressure bar (SHPB) technique. The shear stress-shear strain curves and failure para...
Dynamic shear properties and failure mechanism of Ti-6Al-4V were studied at strain rates in excess of 104 s-1, with a new loading method based on the split Hopkinson pressure bar (SHPB) technique. The shear stress-shear strain curves and failure para...
2018, 38(5): 1145-1154.
doi: 10.11883/bzycj-2017-0119
Abstract:
In this paper, experiments and numerical simulation were conducted to study the damage effect of shaped charges exploding underwater on cabins near the shipboard, and discussed the propagation law of shock wave in multimedia structure and damage mech...
In this paper, experiments and numerical simulation were conducted to study the damage effect of shaped charges exploding underwater on cabins near the shipboard, and discussed the propagation law of shock wave in multimedia structure and damage mech...
2018, 38(5): 1155-1164.
doi: 10.11883/bzycj-2017-0387
Abstract:
Using the control volume method to describe annular an airtight airbag, we simulated the water entry process of a projectile and its annular airtight airbag based on LS-DYNA combined with the fluid-solid coupling algorithm. We divided this process in...
Using the control volume method to describe annular an airtight airbag, we simulated the water entry process of a projectile and its annular airtight airbag based on LS-DYNA combined with the fluid-solid coupling algorithm. We divided this process in...
2018, 38(5): 1165-1171.
doi: 10.11883/bzycj-2017-0116
Abstract:
Conventional measurements in SHPB are based on recording the strain profiles on the incident and transmitted bars with strain gauges, and require good adhesion between the strain gauge and bars, which strongly depends on the skill of an operator. In ...
Conventional measurements in SHPB are based on recording the strain profiles on the incident and transmitted bars with strain gauges, and require good adhesion between the strain gauge and bars, which strongly depends on the skill of an operator. In ...
2018, 38(5): 1172-1180.
doi: 10.11883/bzycj-2017-0410
Abstract:
To explore the directional-control blasting mechanism of a split-tube charge holder, a model was established by coupling explosive, a split-tube, and air. On the basis of the experimental results of the double split-tube charge holder by the high-spe...
To explore the directional-control blasting mechanism of a split-tube charge holder, a model was established by coupling explosive, a split-tube, and air. On the basis of the experimental results of the double split-tube charge holder by the high-spe...
