2017 Vol. 37, No. 5
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2017, 37(5): 785-792.
doi: 10.11883/1001-1455(2017)05-0785-08
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Abstract:
In this work, a hypervelocity impact acoustic emission signal feature extraction method was proposed to detect damages experienced by the honeycomb core sandwich structure impacted by space debris by using hypervelocity impact acoustic emission signa...
In this work, a hypervelocity impact acoustic emission signal feature extraction method was proposed to detect damages experienced by the honeycomb core sandwich structure impacted by space debris by using hypervelocity impact acoustic emission signa...
2017, 37(5): 793-798.
doi: 10.11883/1001-1455(2017)05-0793-06
Abstract:
In the shot PTS-151 experiments the maximum velocity measured on the magnetically driven aluminum flyer plate with a thickness of 370 μm was 18 km/s, while that with a thickness 482 μm was 19 km/s. In this work, the data from the shot PTS-151 experim...
In the shot PTS-151 experiments the maximum velocity measured on the magnetically driven aluminum flyer plate with a thickness of 370 μm was 18 km/s, while that with a thickness 482 μm was 19 km/s. In this work, the data from the shot PTS-151 experim...
2017, 37(5): 799-806.
doi: 10.11883/1001-1455(2017)05-0799-08
Abstract:
Craters are the main response-induced form of underground explosion loadings. A series of field experiments were conducted in low-moisture and saturated sand in a large-scale experiment pit to study crater formation induced by underground explosions....
Craters are the main response-induced form of underground explosion loadings. A series of field experiments were conducted in low-moisture and saturated sand in a large-scale experiment pit to study crater formation induced by underground explosions....
2017, 37(5): 807-812.
doi: 10.11883/1001-1455(2017)05-0807-06
Abstract:
In this paper, we figured out a numerical simulation method involving the mechanical, thermal and chemical properties of the Steven test based on the thermo-mechanical coupled material model to simulate the Steven test of the plastic bonded explosive...
In this paper, we figured out a numerical simulation method involving the mechanical, thermal and chemical properties of the Steven test based on the thermo-mechanical coupled material model to simulate the Steven test of the plastic bonded explosive...
2017, 37(5): 813-821.
doi: 10.11883/1001-1455(2017)05-0813-09
Abstract:
The normal restitution coefficient (NRC) is a key parameter that determines the trajectory of the stone during a rockfall. In this study, using a test equipment and a sound-sampling technique developed by ourselves, we first measured the NRC of sands...
The normal restitution coefficient (NRC) is a key parameter that determines the trajectory of the stone during a rockfall. In this study, using a test equipment and a sound-sampling technique developed by ourselves, we first measured the NRC of sands...
2017, 37(5): 822-828.
doi: 10.11883/1001-1455(2017)05-0822-07
Abstract:
In this paper, we analyzed the waveforms of the two explosions that occurred on Dec.11, 2007 and Oct.9, 2006 as recorded using the HIA seismic station and the PS12 borehole seismic array. The results show that a borehole station can raise the signal-...
In this paper, we analyzed the waveforms of the two explosions that occurred on Dec.11, 2007 and Oct.9, 2006 as recorded using the HIA seismic station and the PS12 borehole seismic array. The results show that a borehole station can raise the signal-...
2017, 37(5): 829-836.
doi: 10.11883/1001-1455(2017)05-0829-08
Abstract:
An experimental investigation of Richtmyer-Meshkov (R-M) instability in the elliptic heavy gas cylinder was presented in detail. The shock-induced instability was studied in a horizontal shock tube using the planar laser-induced fluorescence (PLIF). ...
An experimental investigation of Richtmyer-Meshkov (R-M) instability in the elliptic heavy gas cylinder was presented in detail. The shock-induced instability was studied in a horizontal shock tube using the planar laser-induced fluorescence (PLIF). ...
2017, 37(5): 837-843.
doi: 10.11883/1001-1455(2017)05-0837-07
Abstract:
Based on the incompressible-rigid-plastic material assumption and the slip line field theory, the resistance function of a rigid projectile penetrating a semi-infinite target at a low velocity was obtained with a single admissible velocity field. A t...
Based on the incompressible-rigid-plastic material assumption and the slip line field theory, the resistance function of a rigid projectile penetrating a semi-infinite target at a low velocity was obtained with a single admissible velocity field. A t...
2017, 37(5): 844-852.
doi: 10.11883/1001-1455(2017)05-0844-09
Abstract:
To characterize the function of water droplets in the restraining and attenuation of the explosive shock wave inside of a cabin, we built several models of a sing layer in z-axis with different sizes of a single droplet and rows of droplets using num...
To characterize the function of water droplets in the restraining and attenuation of the explosive shock wave inside of a cabin, we built several models of a sing layer in z-axis with different sizes of a single droplet and rows of droplets using num...
2017, 37(5): 853-862.
doi: 10.11883/1001-1455(2017)05-0853-10
Abstract:
In the present study the early-stage deformation of a liquid drop in the high-speed flow induced by a planar shock wave was experimentally investigated using the shock tube facility and high-speed photography technique. It was found that the variatio...
In the present study the early-stage deformation of a liquid drop in the high-speed flow induced by a planar shock wave was experimentally investigated using the shock tube facility and high-speed photography technique. It was found that the variatio...
2017, 37(5): 863-870.
doi: 10.11883/1001-1455(2017)05-0863-08
Abstract:
In order to characterize the explosion of the gasoline vapor/air mixture, we introduced the unstretched laminar burning velocity of premixed gasoline vapor/air flame to the research of the mixture. The unstretched laminar burning velocity was experim...
In order to characterize the explosion of the gasoline vapor/air mixture, we introduced the unstretched laminar burning velocity of premixed gasoline vapor/air flame to the research of the mixture. The unstretched laminar burning velocity was experim...
2017, 37(5): 871-878.
doi: 10.11883/1001-1455(2017)05-0871-08
Abstract:
In order to study the dynamic mechanical properties of 2A16-T4 aluminum alloy, experiments for the alloy at quasi-static, intermediate, and high strain rates were performed using an electronic multi-purpose testing machine, a high velocity hydraulic ...
In order to study the dynamic mechanical properties of 2A16-T4 aluminum alloy, experiments for the alloy at quasi-static, intermediate, and high strain rates were performed using an electronic multi-purpose testing machine, a high velocity hydraulic ...
2017, 37(5): 879-886.
doi: 10.11883/1001-1455(2017)05-0879-08
Abstract:
To obtain the failure modes of aeronautical rivets under dynamic loading, dynamic failure experiments were carried out for six aeronautical rivets at different speeds and in different loading conditions on a high-speed servo hydraulic test machine us...
To obtain the failure modes of aeronautical rivets under dynamic loading, dynamic failure experiments were carried out for six aeronautical rivets at different speeds and in different loading conditions on a high-speed servo hydraulic test machine us...
2017, 37(5): 887-892.
doi: 10.11883/1001-1455(2017)05-0887-06
Abstract:
For the "abnormal discharge" phenomenon of the pulse signal electric probe due to the micro-jetting, we proposed a K+Rx equivalent circuit model of the micro-jetting and conducted the explosive loading experiments to explain the discharging mechanism...
For the "abnormal discharge" phenomenon of the pulse signal electric probe due to the micro-jetting, we proposed a K+Rx equivalent circuit model of the micro-jetting and conducted the explosive loading experiments to explain the discharging mechanism...
2017, 37(5): 893-898.
doi: 10.11883/1001-1455(2017)05-0893-06
Abstract:
Strain growth, whose related research has so far been concerned mostly with its behavior during the plastic response inside a spherical shell, poses a threat to the safety of explosion containment vessels. In the present work, the strain growth of th...
Strain growth, whose related research has so far been concerned mostly with its behavior during the plastic response inside a spherical shell, poses a threat to the safety of explosion containment vessels. In the present work, the strain growth of th...
2017, 37(5): 899-905.
doi: 10.11883/1001-1455(2017)05-0899-07
Abstract:
A series of underground explosions whose yield is confined at a limited level ranging from a few kilograms to a hundred were carried out in the Quaternary Period hardpan. The law of seismic wave propagation on small yield chemical explosion was inves...
A series of underground explosions whose yield is confined at a limited level ranging from a few kilograms to a hundred were carried out in the Quaternary Period hardpan. The law of seismic wave propagation on small yield chemical explosion was inves...
2017, 37(5): 906-912.
doi: 10.11883/1001-1455(2017)05-0906-07
Abstract:
To determine the effect of inert gas (N2 and CO2) on the process of mine gas explosion, we carried out mine gas explosion experiments in a medium-size pipe with the volume fractions of N2 or CO2 filled in three components of mine gas samples which we...
To determine the effect of inert gas (N2 and CO2) on the process of mine gas explosion, we carried out mine gas explosion experiments in a medium-size pipe with the volume fractions of N2 or CO2 filled in three components of mine gas samples which we...
2017, 37(5): 913-922.
doi: 10.11883/1001-1455(2017)05-0913-10
Abstract:
Uniaxial compression experiments of K9 glass spheres with a diameter of 8mm were conducted to obtain the fracture responses of brittle particles at five loading velocities, i.e.2×10-7 and 2×10-6m/s for quasi-static loading and 3.4, 7.1 and 10.6m/s fo...
Uniaxial compression experiments of K9 glass spheres with a diameter of 8mm were conducted to obtain the fracture responses of brittle particles at five loading velocities, i.e.2×10-7 and 2×10-6m/s for quasi-static loading and 3.4, 7.1 and 10.6m/s fo...
2017, 37(5): 923-928.
doi: 10.11883/1001-1455(2017)05-0923-06
Abstract:
In the present study, to analyze how the parameters of the coil's pulsed current affect the pinching characteristics of the shaped charge jet (SCJ), theoretical models considering the induced current density, the magnetic flux intensity and the pinch...
In the present study, to analyze how the parameters of the coil's pulsed current affect the pinching characteristics of the shaped charge jet (SCJ), theoretical models considering the induced current density, the magnetic flux intensity and the pinch...
2017, 37(5): 929-936.
doi: 10.11883/1001-1455(2017)05-0929-08
Abstract:
To investigate the influence of a non-parallel end-face for a short cylinder rock specimen on dynamic mechanical test results, we carried out numerical simulation of the SHPB test for rock material in 9 non-parallelisms and 5 Young's moduli using the...
To investigate the influence of a non-parallel end-face for a short cylinder rock specimen on dynamic mechanical test results, we carried out numerical simulation of the SHPB test for rock material in 9 non-parallelisms and 5 Young's moduli using the...
2017, 37(5): 937-944.
doi: 10.11883/1001-1455(2017)05-0937-08
Abstract:
There have been numerous bird-strike accidents in which substantial damage to the airframe occurred even though the striking force involved did not reach the energy standard currently required, showing that only taking mass and velocity into account ...
There have been numerous bird-strike accidents in which substantial damage to the airframe occurred even though the striking force involved did not reach the energy standard currently required, showing that only taking mass and velocity into account ...
2017, 37(5): 945-950.
doi: 10.11883/1001-1455(2017)05-0945-06
Abstract:
Powerful techniques have been developed for calculating the plane wave response of horizontally layered models. This method is quite general and is widely used in synthetic wave algorithms. Using this method, we can describe the displacements in term...
Powerful techniques have been developed for calculating the plane wave response of horizontally layered models. This method is quite general and is widely used in synthetic wave algorithms. Using this method, we can describe the displacements in term...
2017, 37(5): 951-956.
doi: 10.11883/1001-1455(2017)05-0951-06
Abstract:
In order to establish a calculation model for the dynamic blast overpressure field, a correction factor was introduced into the Baker formula, a model for calculating the peak overpressure only in a static blast. The method to obtain the correction f...
In order to establish a calculation model for the dynamic blast overpressure field, a correction factor was introduced into the Baker formula, a model for calculating the peak overpressure only in a static blast. The method to obtain the correction f...
2017, 37(5): 957-963.
doi: 10.11883/1001-1455(2017)05-0957-07
Abstract:
For the evaluation of the applicability of the single degree of freedom (SDOF) model in the structural antiknock design, the dynamic response of the simply supported steel column under explosion load was simulated using both the SDOF model and the AN...
For the evaluation of the applicability of the single degree of freedom (SDOF) model in the structural antiknock design, the dynamic response of the simply supported steel column under explosion load was simulated using both the SDOF model and the AN...
2017, 37(5): 964-968.
doi: 10.11883/1001-1455(2017)05-0964-05
Abstract:
Damage could occur to a more severe degree in an internal blast than in an air blast with respect to box-shaped structures. In the present study, a blast experiment was performed using 98.4, 194.7 and 355.8 g TNT explosives, respectively on three box...
Damage could occur to a more severe degree in an internal blast than in an air blast with respect to box-shaped structures. In the present study, a blast experiment was performed using 98.4, 194.7 and 355.8 g TNT explosives, respectively on three box...
2017, 37(5): 969-975.
doi: 10.11883/1001-1455(2017)05-0969-07
Abstract:
At first, we analyzed the numerical stability of the explicit exact algorithm developed for the viscoplastic material, and then found that the explicit exact algorithm is not absolutely stable, deduced a necessary criterion that the time step should ...
At first, we analyzed the numerical stability of the explicit exact algorithm developed for the viscoplastic material, and then found that the explicit exact algorithm is not absolutely stable, deduced a necessary criterion that the time step should ...
2017, 37(5): 976-982.
doi: 10.11883/1001-1455(2017)05-0976-07
Abstract:
The present study addresses the potential damage that might be suffered by the test device of a projectile body as a result of the gun powder gas coming from the clearance opened in the projection base for installing an ejection device for the recove...
The present study addresses the potential damage that might be suffered by the test device of a projectile body as a result of the gun powder gas coming from the clearance opened in the projection base for installing an ejection device for the recove...
