2009 Vol. 29, No. 3
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2009, 29(3): 225-230.
doi: 10.11883/1001-1455(2009)03-0225-06
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Abstract:
The present paper discusses the ratios of DOP (depth of penetration) of different targets under the same penetration condition according to the dimensionless formula of DOP of different targets penetrated by a non-deformable projectile. It is declare...
The present paper discusses the ratios of DOP (depth of penetration) of different targets under the same penetration condition according to the dimensionless formula of DOP of different targets penetrated by a non-deformable projectile. It is declare...
2009, 29(3): 231-236.
doi: 10.11883/1001-1455(2009)03-0231-06
Abstract:
The 6.35-mm-diameter aluminum spheres were driven by a two-stage light-gas gun to normally penetrate aluminum sheets at the impact velocities of 2.23~5.26 km/s. The flash radiographs of the impact-induced debris clouds were presented and analyzed to ...
The 6.35-mm-diameter aluminum spheres were driven by a two-stage light-gas gun to normally penetrate aluminum sheets at the impact velocities of 2.23~5.26 km/s. The flash radiographs of the impact-induced debris clouds were presented and analyzed to ...
2009, 29(3): 237-242.
doi: 10.11883/1001-1455(2009)03-0237-06
Abstract:
Numerical investigations were conducted by using the explicit dynamic finite element method. In numerical simulations, the honeycomb specimen was divided into nine regions by referring the local deformation modes of a perfect hexagonal honeycomb unde...
Numerical investigations were conducted by using the explicit dynamic finite element method. In numerical simulations, the honeycomb specimen was divided into nine regions by referring the local deformation modes of a perfect hexagonal honeycomb unde...
2009, 29(3): 243-248.
doi: 10.11883/1001-1455(2009)03-0243-06
Abstract:
On the basis of the multi-fluid volume-of-fraction method and piecewise parabolic method, a multi-viscosity-fluid piecewise parabolic method(MVPPM) was proposed and the corresponding computer code was developed to investigate the multi-viscous-fluid ...
On the basis of the multi-fluid volume-of-fraction method and piecewise parabolic method, a multi-viscosity-fluid piecewise parabolic method(MVPPM) was proposed and the corresponding computer code was developed to investigate the multi-viscous-fluid ...
2009, 29(3): 249-254.
doi: 10.11883/1001-1455(2009)03-0249-06
Abstract:
The dynamic response of a cylindrical explosion containment vessel with the elliptical cover under four kinds blast loading was studied using explicit finite element code LS-DYNA. The results show that for the ideal structure that only include a cyli...
The dynamic response of a cylindrical explosion containment vessel with the elliptical cover under four kinds blast loading was studied using explicit finite element code LS-DYNA. The results show that for the ideal structure that only include a cyli...
2009, 29(3): 255-260.
doi: 10.11883/1001-1455(2009)03-0255-06
Abstract:
The experiment, mechanism analysis and numerical simulation were conducted to systemically explore impulsive thermomechanical response of parabolic laser thrusters for air-breathing mode laser propulsion. Based on analysis on the four thermal loads o...
The experiment, mechanism analysis and numerical simulation were conducted to systemically explore impulsive thermomechanical response of parabolic laser thrusters for air-breathing mode laser propulsion. Based on analysis on the four thermal loads o...
2009, 29(3): 261-267.
doi: 10.11883/1001-1455(2009)03-0261-07
Abstract:
Concrete is regarded as a two-phase composite constaining coarse aggregate particles and mortar matrix. The mortar matrix and coarse aggregate particles are assumed to be elastic, homogeneous and isotropic. Coarse aggregate particles are spherical. B...
Concrete is regarded as a two-phase composite constaining coarse aggregate particles and mortar matrix. The mortar matrix and coarse aggregate particles are assumed to be elastic, homogeneous and isotropic. Coarse aggregate particles are spherical. B...
2009, 29(3): 268-274.
doi: 10.11883/1001-1455(2009)03-0268-07
Abstract:
A special experiment system was designed to carry out an experimental investigation about gasoline-air mixture ignition phenomena induced by the hot wall in a confined space. According to experimental results, the ignition manner of gasoline-air mixt...
A special experiment system was designed to carry out an experimental investigation about gasoline-air mixture ignition phenomena induced by the hot wall in a confined space. According to experimental results, the ignition manner of gasoline-air mixt...
2009, 29(3): 275-280.
doi: 10.11883/1001-1455(2009)03-0275-06
Abstract:
Based on the sound velocity measurement theory, using RSM-SY5 intelligent sound wave apparatus, damage of the surrounding rock under blasting load in a strip iron mine was studied by in-situ tests on sound waves. It is shown that the damage range of ...
Based on the sound velocity measurement theory, using RSM-SY5 intelligent sound wave apparatus, damage of the surrounding rock under blasting load in a strip iron mine was studied by in-situ tests on sound waves. It is shown that the damage range of ...
2009, 29(3): 281-288.
doi: 10.11883/1001-1455(2009)03-0281-08
Abstract:
By changing the jacket, the filler and the impact velocity of the PELE projectiles, the impact behaviors of the PELE projectiles perpendicularly perforating thin target plates were investigated experimentally. On the basis of the experimental results...
By changing the jacket, the filler and the impact velocity of the PELE projectiles, the impact behaviors of the PELE projectiles perpendicularly perforating thin target plates were investigated experimentally. On the basis of the experimental results...
2009, 29(3): 289-294.
doi: 10.11883/1001-1455(2009)03-0289-06
Abstract:
To explore the compaction mechanism of porous materials under explosive loading, the process of the circular shape pore collapse in oxygen-free copper was numerically simulated by using the LS-DYNA finite element code. Simulated results indicate that...
To explore the compaction mechanism of porous materials under explosive loading, the process of the circular shape pore collapse in oxygen-free copper was numerically simulated by using the LS-DYNA finite element code. Simulated results indicate that...
2009, 29(3): 295-299.
doi: 10.11883/1001-1455(2009)03-0295-05
Abstract:
An oxygen-free high-conductivity copper(OFHC) cylinder was driven by a single-stage gun to impact OFHC plates at the velocity of 205 m/s. The longitudinal stress-time traces in the plates were recorded by the manganin stress gauge and the recovered s...
An oxygen-free high-conductivity copper(OFHC) cylinder was driven by a single-stage gun to impact OFHC plates at the velocity of 205 m/s. The longitudinal stress-time traces in the plates were recorded by the manganin stress gauge and the recovered s...
2009, 29(3): 300-305.
doi: 10.11883/1001-1455(2009)03-0300-06
Abstract:
According to the characteristics of short-time, non-stationary random signals, the wavelet packet energy spectra for the measured blasting vibration signals were investigated by using the wavelet packet analysis. These blasting vibration signals were...
According to the characteristics of short-time, non-stationary random signals, the wavelet packet energy spectra for the measured blasting vibration signals were investigated by using the wavelet packet analysis. These blasting vibration signals were...
2009, 29(3): 306-311.
doi: 10.11883/1001-1455(2009)03-0306-06
Abstract:
Dynamic mechanical behaviors of 5A06 Al alloy by three kinds of processes and heat treatments were studied with the split Hopkinson pressure bar (SHPB) and static material test system over a wide range of strain rates and temperature. The Johnson-Coo...
Dynamic mechanical behaviors of 5A06 Al alloy by three kinds of processes and heat treatments were studied with the split Hopkinson pressure bar (SHPB) and static material test system over a wide range of strain rates and temperature. The Johnson-Coo...
2009, 29(3): 312-317.
doi: 10.11883/1001-1455(2009)03-0312-06
Abstract:
The mechanics models were established for arches with flexible supports at their ends. The flexible supports include vertical elastic and damping supports, horizontal elastic supports, and rotatable elastic supports. Based on the large deformation dy...
The mechanics models were established for arches with flexible supports at their ends. The flexible supports include vertical elastic and damping supports, horizontal elastic supports, and rotatable elastic supports. Based on the large deformation dy...
2009, 29(3): 318-321.
doi: 10.11883/1001-1455(2009)03-0318-05
Abstract:
An experimental sub-caliber technique of 7.62 mm rifle bullet launched by a 25 mm artillery is introduced in the present paper. A bakelite sabot is employed to fit the larger diameter of artillery for firing a smaller bullet. In order to ensure a bul...
An experimental sub-caliber technique of 7.62 mm rifle bullet launched by a 25 mm artillery is introduced in the present paper. A bakelite sabot is employed to fit the larger diameter of artillery for firing a smaller bullet. In order to ensure a bul...
2009, 29(3): 323-327.
doi: 10.11883/1001-1455(2009)03-0323-05
Abstract:
A sweep Langmuir probe diagnostic system was designed to investigate the electron temperature evolution of plasma produced by hypervelocity impact of LY12 aluminum projectiles into LY12 aluminum targets. In the experiment, LY12 aluminum spherical pro...
A sweep Langmuir probe diagnostic system was designed to investigate the electron temperature evolution of plasma produced by hypervelocity impact of LY12 aluminum projectiles into LY12 aluminum targets. In the experiment, LY12 aluminum spherical pro...
2009, 29(3): 328-332.
doi: 10.11883/1001-1455(2009)03-0328-05
Abstract:
Based on the study on the forming mechanism of blasting-induced crack under blasting stress wave, by adopting the Mohr-Coulomb criterion and the maximum stress criterion, the influence of in-situ stress redistribution on the proportional radius of th...
Based on the study on the forming mechanism of blasting-induced crack under blasting stress wave, by adopting the Mohr-Coulomb criterion and the maximum stress criterion, the influence of in-situ stress redistribution on the proportional radius of th...
2009, 29(3): 333-336.
doi: 10.11883/1001-1455(2009)03-0333-04
Abstract:
The explosive characters of ClO2 gas were investigated in a cylindrical explosion chamber of 20 liters capacity. Experimental results indicate that the lowest volume fraction of ClO2 gas for its explosive decomposition is 9.5%, and the corresponding ...
The explosive characters of ClO2 gas were investigated in a cylindrical explosion chamber of 20 liters capacity. Experimental results indicate that the lowest volume fraction of ClO2 gas for its explosive decomposition is 9.5%, and the corresponding ...
