2007 Vol. 27, No. 4
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2007, 27(4): 289-295.
doi: 10.11883/1001-1455(2007)04-0289-07
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Abstract:
The experimental investigation of TiNi cantilever with circular cross-section under transversal impact loading was conducted by using a revised Hopkinson bar apparatus, and compared to 45 steel cantilever. The purpose of this study is to explore the ...
The experimental investigation of TiNi cantilever with circular cross-section under transversal impact loading was conducted by using a revised Hopkinson bar apparatus, and compared to 45 steel cantilever. The purpose of this study is to explore the ...
2007, 27(4): 296-305.
doi: 10.11883/1001-1455(2007)04-0296-10
Abstract:
The dynamic plastic buckling of earth penetrating weapon(EPW) was experimentally studied. Two failure modes, i.e., crapy buckling and dynamic expansion buckling for different length-diameter-ratio projectiles, were observed in the tests. Different fa...
The dynamic plastic buckling of earth penetrating weapon(EPW) was experimentally studied. Two failure modes, i.e., crapy buckling and dynamic expansion buckling for different length-diameter-ratio projectiles, were observed in the tests. Different fa...
2007, 27(4): 306-311.
doi: 10.11883/1001-1455(2007)04-0306-06
Abstract:
The process of rock failure under impact loading was analyzed with mechanics model and the dynamic behavior was described according to hard rock characters. The stress state transfered from elastic state to intrinsic friction state, finally liquid hy...
The process of rock failure under impact loading was analyzed with mechanics model and the dynamic behavior was described according to hard rock characters. The stress state transfered from elastic state to intrinsic friction state, finally liquid hy...
2007, 27(4): 312-318.
doi: 10.11883/1001-1455(2007)04-0312-07
Abstract:
The cell sizes caused by fuel-air cloud detonation were investigated by smoked foil in a vertical shock tube. It indicates that the relationship of the cell sizes and equivalence ratios shows a U-curve, The minimal cell size is obtained when equivale...
The cell sizes caused by fuel-air cloud detonation were investigated by smoked foil in a vertical shock tube. It indicates that the relationship of the cell sizes and equivalence ratios shows a U-curve, The minimal cell size is obtained when equivale...
2007, 27(4): 319-324.
doi: 10.11883/1001-1455(2007)04-0319-06
Abstract:
By the ANSYS/LS-DYNA code, two new projectiles were designed based on the homemade 9 mm handgun projectile. The two new projectiles with soft and empty tines have the capability of high execution and low inbreaking. The velocity attenuation, displace...
By the ANSYS/LS-DYNA code, two new projectiles were designed based on the homemade 9 mm handgun projectile. The two new projectiles with soft and empty tines have the capability of high execution and low inbreaking. The velocity attenuation, displace...
2007, 27(4): 325-330.
doi: 10.11883/1001-1455(2007)04-0325-06
Abstract:
The local normal detonation speed Dn of insensitive high explosive is closely relative to the local total curvature . To investigate the nonideal detonation of JB-9014 rate sticks(95wt.%TATB+5wt.% binder) at low temperature, series experiments were c...
The local normal detonation speed Dn of insensitive high explosive is closely relative to the local total curvature . To investigate the nonideal detonation of JB-9014 rate sticks(95wt.%TATB+5wt.% binder) at low temperature, series experiments were c...
2007, 27(4): 331-338.
doi: 10.11883/1001-1455(2007)04-0331-08
Abstract:
The rigid-perfectly plastic dynamic response of a slender projectile penetrating into a semi-infinte concrete target with a oblique angle was presented based on the theory of free-free beam subjected to impulsive lateral loading. The lateral and axia...
The rigid-perfectly plastic dynamic response of a slender projectile penetrating into a semi-infinte concrete target with a oblique angle was presented based on the theory of free-free beam subjected to impulsive lateral loading. The lateral and axia...
2007, 27(4): 339-344.
doi: 10.11883/1001-1455(2007)04-0339-06
Abstract:
Dynamic model of mix-refrigerant including flammable components leaking from vapor and liquid space was established. The influence of leakages on the flammability of mix-refrigerant was analyzed. A new method judging the burnable fatalness of mix-ref...
Dynamic model of mix-refrigerant including flammable components leaking from vapor and liquid space was established. The influence of leakages on the flammability of mix-refrigerant was analyzed. A new method judging the burnable fatalness of mix-ref...
2007, 27(4): 345-351.
doi: 10.11883/1001-1455(2007)04-0345-07
Abstract:
The propagation characteristics of stress waves in the solids with variable section was dissection. Based on the one-dimensional longitudinal wave motion theory and the harmonic analysis, the rules of the dispersion of the wave shape and the change o...
The propagation characteristics of stress waves in the solids with variable section was dissection. Based on the one-dimensional longitudinal wave motion theory and the harmonic analysis, the rules of the dispersion of the wave shape and the change o...
2007, 27(4): 352-357.
doi: 10.11883/1001-1455(2007)04-0352-06
Abstract:
The constitutive model was described based on the theory formwork of elastic-plastic hydrodynamics for saturated soil under the explosive loading, including the relation of pressure and volumetric strain and the relation of pressure and failure surfa...
The constitutive model was described based on the theory formwork of elastic-plastic hydrodynamics for saturated soil under the explosive loading, including the relation of pressure and volumetric strain and the relation of pressure and failure surfa...
2007, 27(4): 358-363.
doi: 10.11883/1001-1455(2007)04-0358-06
Abstract:
The experimental technique of split Hopkinson pressure bar is an effective method to carry out an experiment in study of the dynamic behavior of materials. But some problems such as non-uniform dynamic stress in a specimen and non-constant strain rat...
The experimental technique of split Hopkinson pressure bar is an effective method to carry out an experiment in study of the dynamic behavior of materials. But some problems such as non-uniform dynamic stress in a specimen and non-constant strain rat...
2007, 27(4): 364-379.
doi: 10.11883/1001-1455(2007)04-0364-06
Abstract:
A tandem follow-through warhead was designed. The experiments of the tandem warhead penetrating concrete target at different impacting velocities and different impacting angles were carried out by using smoothbore gun with a diameter of 100 mm. Exper...
A tandem follow-through warhead was designed. The experiments of the tandem warhead penetrating concrete target at different impacting velocities and different impacting angles were carried out by using smoothbore gun with a diameter of 100 mm. Exper...
2007, 27(4): 370-374.
doi: 10.11883/1001-1455(2007)04-0370-05
Abstract:
A shaped charge with steady energy output was developed to study all kinds of the explosives sensitivity to shaped charge jets, and its stability was validated by three methods. The jet sensitivities of such explosives as TNT, Comp B, and JB-B were e...
A shaped charge with steady energy output was developed to study all kinds of the explosives sensitivity to shaped charge jets, and its stability was validated by three methods. The jet sensitivities of such explosives as TNT, Comp B, and JB-B were e...
2007, 27(4): 375-379.
doi: 10.11883/1001-1455(2007)04-0375-05
Abstract:
It is necessary to give a testing standard for measuring the non-explosion farm AN. A new kind of standard detonator was designed to ensure the coherence of testing results. The obtained results show that the out-put of the standard detonator is larg...
It is necessary to give a testing standard for measuring the non-explosion farm AN. A new kind of standard detonator was designed to ensure the coherence of testing results. The obtained results show that the out-put of the standard detonator is larg...
2007, 27(4): 380-384.
doi: 10.11883/1001-1455(2007)04-0380-05
Abstract:
In order to detect underwater objects such as submarines, an underwater acoustic source is required, with its frequency in the range of 1-4 kHz, and the pressure peak of the acoustic pulse more than 1 MPa. This kind of acoustic pulse can be generated...
