2008 Vol. 28, No. 4
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2008, 28(4): 289-292.
doi: 10.11883/1001-1455(2008)04-0289-04
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Abstract:
Deformation and mechanical property of aluminium foams with lower densities were experimentally studied at different strain rates. Results show as follows: (1) the deformation characteristic of Al foams at a lower strain rate presents an initial crus...
Deformation and mechanical property of aluminium foams with lower densities were experimentally studied at different strain rates. Results show as follows: (1) the deformation characteristic of Al foams at a lower strain rate presents an initial crus...
2008, 28(4): 293-297.
doi: 10.11883/1001-1455(2008)04-0293-05
Abstract:
The transition processes of supersonic combustion in a dual-mode scramjet were investigated by means of directly-connected tests under the simulated conditions corresponding to the flying altitude of 25 km and the Mach number of 6. Pressure distribut...
The transition processes of supersonic combustion in a dual-mode scramjet were investigated by means of directly-connected tests under the simulated conditions corresponding to the flying altitude of 25 km and the Mach number of 6. Pressure distribut...
2008, 28(4): 298-303.
doi: 10.11883/1001-1455(2008)04-0298-06
Abstract:
This paper briefly reports our recent progresses in the analytical and numerical studies on the dynamic fragmentation of brittle materials. The research renders a universal function for estimating the fragment size from the material parameters and th...
This paper briefly reports our recent progresses in the analytical and numerical studies on the dynamic fragmentation of brittle materials. The research renders a universal function for estimating the fragment size from the material parameters and th...
2008, 28(4): 304-309.
doi: 10.11883/1001-1455(2008)04-0304-06
Abstract:
Based on the exploding fracturing principle, an experimental device on rock fracturing was developed to study the rock cracking mechanism by pressure pulses. According to the laws of energy and momentum conservation, the calculation models of the pea...
Based on the exploding fracturing principle, an experimental device on rock fracturing was developed to study the rock cracking mechanism by pressure pulses. According to the laws of energy and momentum conservation, the calculation models of the pea...
2008, 28(4): 310-315.
doi: 10.11883/1001-1455(2008)04-0310-06
Abstract:
In order to explore stress wave propagation and action of control holes for deep-hole blasting in coal seams, based on parameters of blasting, explosive and coal mass got from the Songzao coal and electricity company, a numerical simulation model of ...
In order to explore stress wave propagation and action of control holes for deep-hole blasting in coal seams, based on parameters of blasting, explosive and coal mass got from the Songzao coal and electricity company, a numerical simulation model of ...
2008, 28(4): 316-323.
doi: 10.11883/1001-1455(2008)04-0316-08
Abstract:
By theory and numerical simulation, influences of direction and location of defects on expanding fracture of a metal cylinder were analyzed and a new explanation was preasented by the microdefect methods. A computational model for the cylinder contai...
By theory and numerical simulation, influences of direction and location of defects on expanding fracture of a metal cylinder were analyzed and a new explanation was preasented by the microdefect methods. A computational model for the cylinder contai...
2008, 28(4): 324-330.
doi: 10.11883/1001-1455(2008)04-0324-07
Abstract:
The dynamic responses of discrete multilayered wound ribbon vessels(DMWRV) subjected to internal explosion loading were numerically simulated by using LS-DYNA3D. Several kinds of winding angles were considered. The simulated results were compared wit...
The dynamic responses of discrete multilayered wound ribbon vessels(DMWRV) subjected to internal explosion loading were numerically simulated by using LS-DYNA3D. Several kinds of winding angles were considered. The simulated results were compared wit...
2008, 28(4): 331-335.
doi: 10.11883/1001-1455(2008)04-0331-05
Abstract:
The response spectrum theory widely applied in earthquake engineering was employed to investigate blasting seismic waves induced by tunnel excavation. After numerical differential calculating for blasting vibration velocity data, an original accelera...
The response spectrum theory widely applied in earthquake engineering was employed to investigate blasting seismic waves induced by tunnel excavation. After numerical differential calculating for blasting vibration velocity data, an original accelera...
2008, 28(4): 336-340.
doi: 10.11883/1001-1455(2008)04-0336-05
Abstract:
In this paper, we analyze the metallographes of the recovered Cu slug and get the results of reduction in the recrystallized grain size and rise in the temperature, which were caused by the two action processes, i.e. the shock wave action in the line...
In this paper, we analyze the metallographes of the recovered Cu slug and get the results of reduction in the recrystallized grain size and rise in the temperature, which were caused by the two action processes, i.e. the shock wave action in the line...
2008, 28(4): 341-349.
doi: 10.11883/1001-1455(2008)04-0341-09
Abstract:
The present paper discusses the influence of different interaction of steel bars and concrete in LS-DYNA code on the perforation of reinforced concrete. Numerical simulations on the experiments by Hanchak S J, et al, are conducted and redisplay the d...
The present paper discusses the influence of different interaction of steel bars and concrete in LS-DYNA code on the perforation of reinforced concrete. Numerical simulations on the experiments by Hanchak S J, et al, are conducted and redisplay the d...
2008, 28(4): 350-354.
doi: 10.11883/1001-1455(2008)04-0350-05
Abstract:
A new method of coating another metals at the interfaces of amorphous foils before explosive welding was propsoed to explore the influences of coating materials on temperature of amorphous foils during explosive welding. The coated amorphous foils we...
A new method of coating another metals at the interfaces of amorphous foils before explosive welding was propsoed to explore the influences of coating materials on temperature of amorphous foils during explosive welding. The coated amorphous foils we...
2008, 28(4): 355-359.
doi: 10.11883/1001-1455(2008)04-0355-05
Abstract:
Pre-splitting blasting is often used in slope engineering construction, pre-splitting parameters have important effects on reducing blasting vibrations. Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting param...
Pre-splitting blasting is often used in slope engineering construction, pre-splitting parameters have important effects on reducing blasting vibrations. Pre-splitting blasting experiments were carried out to obtain normal pre-splitting blasting param...
2008, 28(4): 360-366.
doi: 10.1188/1001-1455(2008)04-0360-07
Abstract:
Dynamical responses of a cabin model under far-field underwater explosion load were experimentally measured and theortically analyzed. The scale model was designed by referring to a representive cabin of naval ships and was used to assess the shock r...
Dynamical responses of a cabin model under far-field underwater explosion load were experimentally measured and theortically analyzed. The scale model was designed by referring to a representive cabin of naval ships and was used to assess the shock r...
2008, 28(4): 367-371.
doi: 10.11883/1001-1455(2008)04-0367-05
Abstract:
The dynamic mechanical properties of dry and water-saturated fast-growing poplar wood under dynamic compression was investigated by the split Hopkinson bar techanique and compared with the quasi-static compression experiment. The failure mechanism of...
The dynamic mechanical properties of dry and water-saturated fast-growing poplar wood under dynamic compression was investigated by the split Hopkinson bar techanique and compared with the quasi-static compression experiment. The failure mechanism of...
2008, 28(4): 372-377.
doi: 10.11883/1001-1455(2008)04-0372-06
Abstract:
The paper presents a new explosion vessel which is used for the recovery of warhead fragments. The vessel contains some water in its bottom and there is some knock-down bombproof material to resist the bomb fragments. The bombproof material can be us...
The paper presents a new explosion vessel which is used for the recovery of warhead fragments. The vessel contains some water in its bottom and there is some knock-down bombproof material to resist the bomb fragments. The bombproof material can be us...
2008, 28(4): 378-383.
doi: 10.11883/1001-1455(2008)04-0378-06
Abstract:
Based on ideal detonation and rigid body kinematics, a new model was proposed to explore the movement law of a controllable rotation discrete rod. Movement states of the rods with different dimensions and different leaning angles were analyzed and co...
Based on ideal detonation and rigid body kinematics, a new model was proposed to explore the movement law of a controllable rotation discrete rod. Movement states of the rods with different dimensions and different leaning angles were analyzed and co...
