2008 Vol. 28, No. 6
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2008, 28(6): 481-487.
doi: 10.11883/1001-1455(2008)06-0481-07
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Abstract:
Tests were performed to investigate the influence of detonation driving on terminal ballistic effects of tungsten spheres. The experimental results show that (1) tungsten spheres are slightly deformed and damaged as a result of the high shock pulse d...
Tests were performed to investigate the influence of detonation driving on terminal ballistic effects of tungsten spheres. The experimental results show that (1) tungsten spheres are slightly deformed and damaged as a result of the high shock pulse d...
2008, 28(6): 488-493.
doi: 10.11883/1001-1455(2008)06-0488-06
Abstract:
Shock response of plastic bonded explosives were simulated at the grain scale using the discrete element method. The mesoscopic structures of explosives were created based on the Voronoi tessellation. Through simulations on explosives with and withou...
Shock response of plastic bonded explosives were simulated at the grain scale using the discrete element method. The mesoscopic structures of explosives were created based on the Voronoi tessellation. Through simulations on explosives with and withou...
2008, 28(6): 494-502.
doi: 10.11883/1001-1455(2008)06-0494-09
Abstract:
Effects of cell micro-topology on the in-plane dynamic crushing properties of honeycombs were numerically studied. The dynamic crushing of the honeycombs filled with the differently micro-arranged cells was discussed in case of these cells with the s...
Effects of cell micro-topology on the in-plane dynamic crushing properties of honeycombs were numerically studied. The dynamic crushing of the honeycombs filled with the differently micro-arranged cells was discussed in case of these cells with the s...
2008, 28(6): 503-506.
doi: 10.11883/1001-1455(2008)06-0503-04
Abstract:
VISAR and X-ray were adopted and the FeMnNi alloy specimens were subjected to the shock pressure far beyond the induced phase transition pressure. Abnormal spalling behaviors were observed in the FeMnNi alloy specimens under symmetric and same thickn...
VISAR and X-ray were adopted and the FeMnNi alloy specimens were subjected to the shock pressure far beyond the induced phase transition pressure. Abnormal spalling behaviors were observed in the FeMnNi alloy specimens under symmetric and same thickn...
2008, 28(6): 507-514.
doi: 10.11883/1001-1455(2008)06-0507-08
Abstract:
Dynamic time history analysis of ground motion with vertical fault fracture zones of different widths and shear wave velocities under Rayleigh wave was carried out by using the Rayleigh wave input method based on the viscous-spring artificial boundar...
Dynamic time history analysis of ground motion with vertical fault fracture zones of different widths and shear wave velocities under Rayleigh wave was carried out by using the Rayleigh wave input method based on the viscous-spring artificial boundar...
2008, 28(6): 515-520.
doi: 10.11883/1001-1455(2008)06-0515-06
Abstract:
The preliminary mesoscale simulation was done for the hot spot formation of plastic bonded explosives(PBX) under shock loading with the combined method of the finite element and discrete element methods. The explosive crystals and binder are simulate...
The preliminary mesoscale simulation was done for the hot spot formation of plastic bonded explosives(PBX) under shock loading with the combined method of the finite element and discrete element methods. The explosive crystals and binder are simulate...
2008, 28(6): 521-526.
doi: 10.11883/1001-1455(2008)06-0521-06
Abstract:
Considering that the target is an intrinsic friction medium, the cavity-expansion approximation and dynamic equations of the medium near the cavity of penetration are used to calculate the resistance of the rigid warhead. The influence of the target ...
Considering that the target is an intrinsic friction medium, the cavity-expansion approximation and dynamic equations of the medium near the cavity of penetration are used to calculate the resistance of the rigid warhead. The influence of the target ...
2008, 28(6): 527-531.
doi: 10.11883/1001-1455(2008)06-0527-05
Abstract:
Stress-strain curves of 0Cr17Mn5Ni4Mo3Al,at three Strain rates of 300,1 000,2 700 s-1 and four temperatures of 25,300,500,700 ℃ were experimentally obtained by using the split Hopkinson pressure bar equipped with a temperature controller.And the quas...
Stress-strain curves of 0Cr17Mn5Ni4Mo3Al,at three Strain rates of 300,1 000,2 700 s-1 and four temperatures of 25,300,500,700 ℃ were experimentally obtained by using the split Hopkinson pressure bar equipped with a temperature controller.And the quas...
2008, 28(6): 532-538.
doi: 10.11883/1001-1455(2008)06-0532-07
Abstract:
Reactive powder concrete (RPC) with a compressive strength of 200MPa was prepared by substitution of ultra-fine industrial waste powders for 60% cement by weight. The dynamic mechanical behaviour of RPC with different fiber volume fraction was resear...
Reactive powder concrete (RPC) with a compressive strength of 200MPa was prepared by substitution of ultra-fine industrial waste powders for 60% cement by weight. The dynamic mechanical behaviour of RPC with different fiber volume fraction was resear...
2008, 28(6): 539-543.
doi: 10.11883/1001-1455(2008)06-0539-05
Abstract:
According to an aquarium test, an experimental method was proposed to measure shock waves in the near field of an underwater explosion. The axial scanning photographs were obtained and analyzed digitally. The shock front pressure along the axle of th...
According to an aquarium test, an experimental method was proposed to measure shock waves in the near field of an underwater explosion. The axial scanning photographs were obtained and analyzed digitally. The shock front pressure along the axle of th...
2008, 28(6): 544-551.
doi: 10.11883/1001-1455(2008)06-0544-08
Abstract:
In the experiments, two types of holed-cracked flattened Brazilian disc specimens were adopted, one was geometrically similar with the diameters of 42, 80, 122 mm and 155 mm respectively, the other was a one-size specimen geometry with an identical 8...
In the experiments, two types of holed-cracked flattened Brazilian disc specimens were adopted, one was geometrically similar with the diameters of 42, 80, 122 mm and 155 mm respectively, the other was a one-size specimen geometry with an identical 8...
2008, 28(6): 552-556.
doi: 10.11883/1001-1455(2008)06-0552-05
Abstract:
Scattering of flexural waves by multiple cutouts and dynamic stress concentration in the thin plates were investigated in terms of the complex variable function method and multi-polar coordinates. The expressions of function approach sequences and co...
Scattering of flexural waves by multiple cutouts and dynamic stress concentration in the thin plates were investigated in terms of the complex variable function method and multi-polar coordinates. The expressions of function approach sequences and co...
2008, 28(6): 557-560.
doi: 10.11883/1001-1455(2008)06-0557-04
Abstract:
Using mild detonating fuse(MDF) impulse simulating the X-ray blow-off impulse in studying the structural response of cylindrical shells, it is needed to measure the distribution characteristics of MDF impulse. According to the optimized results， an a...
Using mild detonating fuse(MDF) impulse simulating the X-ray blow-off impulse in studying the structural response of cylindrical shells, it is needed to measure the distribution characteristics of MDF impulse. According to the optimized results， an a...
2008, 28(6): 561-564.
doi: 10.11883/1001-1455(2008)06-0561-04
Abstract:
The behavior of quasi-brittle materials like cement mortar depends on the level of confinement. In order to study the dynamic behavior of cement mortar under active confinement, An device which fits the split Hopkinson bar loading was developed, and ...
The behavior of quasi-brittle materials like cement mortar depends on the level of confinement. In order to study the dynamic behavior of cement mortar under active confinement, An device which fits the split Hopkinson bar loading was developed, and ...
2008, 28(6): 565-571.
doi: 10.11883/1001-1455(2008)06-0565-07
Abstract:
Aimed at the stability analysis of layered rock slope affected by the erosion, impulse, and compaction of the weak intercalation caused by blasting, and applied on the theory that blasting gas is isoentropy adiabatic expansion in the lamination crack...
Aimed at the stability analysis of layered rock slope affected by the erosion, impulse, and compaction of the weak intercalation caused by blasting, and applied on the theory that blasting gas is isoentropy adiabatic expansion in the lamination crack...
2008, 28(6): 572-576.
doi: 10.11883/1001-1455(2008)06-0572-05
Abstract:
Dynamics of bubble oscillation formed during underwater explosions were studied in a water tank. The expansion and collapse of the bubble pictures created by the explosion of the short length-diameter ratio(1.05) PETN were captured by a high-speed ca...
Dynamics of bubble oscillation formed during underwater explosions were studied in a water tank. The expansion and collapse of the bubble pictures created by the explosion of the short length-diameter ratio(1.05) PETN were captured by a high-speed ca...
