2009 Vol. 29, No. 2
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2009, 29(2): 113-118.
doi: 10.11883/1001-1455(2009)02-0113-06
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Abstract:
A novel facility for tensile testing at the critical impact velocity was designed in a gas gun system. This facility consists of two assemblies, firstly, a gas gun system to propel the projectile and secondly, the tension mechanism to grip and strain...
A novel facility for tensile testing at the critical impact velocity was designed in a gas gun system. This facility consists of two assemblies, firstly, a gas gun system to propel the projectile and secondly, the tension mechanism to grip and strain...
2009, 29(2): 119-124.
doi: 10.11883/1001-1455(2009)02-0119-06
Abstract:
A large-size Hopkinson pressure bar equipment was used to explore the spall fracture properties of steel-fiber-reinforced concrete (SFRC) by analyzing the strain wave profiles in the absorption bar behind the specimen. The experimental results indica...
A large-size Hopkinson pressure bar equipment was used to explore the spall fracture properties of steel-fiber-reinforced concrete (SFRC) by analyzing the strain wave profiles in the absorption bar behind the specimen. The experimental results indica...
2009, 29(2): 125-130.
doi: 10.11883/1001-1455(2009)02-0125-06
Abstract:
Blast wave produced by an outer-sphere charge exploding in water of infinite depth was numerically simulated by solving the one-dimensional hydrodynamic equations for an inviscid and non-heat-conducting flow.In the simulation calculation, a Jones-Wil...
Blast wave produced by an outer-sphere charge exploding in water of infinite depth was numerically simulated by solving the one-dimensional hydrodynamic equations for an inviscid and non-heat-conducting flow.In the simulation calculation, a Jones-Wil...
2009, 29(2): 131-136.
doi: 10.11883/1001-1455(2009)02-0131-06
Abstract:
For investigating the delayed detonation phenomenon of the solid propellant initiated by low magnitude shock waves, the double card gap tests for the solid propellant mainly consisting of Al, HMX and AP were conducted. In the tests, the delayed deton...
For investigating the delayed detonation phenomenon of the solid propellant initiated by low magnitude shock waves, the double card gap tests for the solid propellant mainly consisting of Al, HMX and AP were conducted. In the tests, the delayed deton...
2009, 29(2): 137-142.
doi: 10.11883/1001-1455(2009)02-0137-06
Abstract:
The split Hopkinson pressure bar (SHPB) tests for concrete were numerically simulated by using the Holmquist-Johnson-Cook (HJC) constitutive model. The contact stiffness in the penalty function algorithm was reasonably determined. The stress-strain c...
The split Hopkinson pressure bar (SHPB) tests for concrete were numerically simulated by using the Holmquist-Johnson-Cook (HJC) constitutive model. The contact stiffness in the penalty function algorithm was reasonably determined. The stress-strain c...
2009, 29(2): 143-148.
doi: 10.11883/1001-1455(2009)02-0143-06
Abstract:
To investigate into the deformation of the Mach stem in a strong shock reflection, the flow field near the intersection point between slip line and wedge surface was theoretically analyzed, and a transition criterion for Mach stem deformation to disa...
To investigate into the deformation of the Mach stem in a strong shock reflection, the flow field near the intersection point between slip line and wedge surface was theoretically analyzed, and a transition criterion for Mach stem deformation to disa...
2009, 29(2): 149-154.
doi: 10.11883/1001-1455(2009)02-0149-06
Abstract:
Based on depth of penetration experiments, anti-penetration experiments were conducted in constrained AD95 ceramic targets and 10%-zirconia-toughened alumina ceramic targets subjected to shaped charge jet penetration.The depth of penetration-time cur...
Based on depth of penetration experiments, anti-penetration experiments were conducted in constrained AD95 ceramic targets and 10%-zirconia-toughened alumina ceramic targets subjected to shaped charge jet penetration.The depth of penetration-time cur...
2009, 29(2): 155-161.
doi: 10.11883/1001-1455(2009)02-0155-07
Abstract:
Numerical analyses for structure-soil interaction were carried out to investigate the attenuation effect of open, inundated water and concrete-filled trenches on high-speed train loading-induced Rayleigh wave propagation. The acceleration and effecti...
Numerical analyses for structure-soil interaction were carried out to investigate the attenuation effect of open, inundated water and concrete-filled trenches on high-speed train loading-induced Rayleigh wave propagation. The acceleration and effecti...
2009, 29(2): 162-166.
doi: 10.11883/1001-1455(2009)02-0162-05
Abstract:
The dynamic tensile fracture of cylindrical OFHC copper subjected to converging waves induced by sliding detonation was experimentally investigated.The inner surface (or free-surface) velocity profiles were measured by the displacement interferometer...
The dynamic tensile fracture of cylindrical OFHC copper subjected to converging waves induced by sliding detonation was experimentally investigated.The inner surface (or free-surface) velocity profiles were measured by the displacement interferometer...
2009, 29(2): 167-171.
doi: 10.11883/1001-1455(2009)02-0167-05
Abstract:
The three-point bending test was performed to explore the dynamic anti-bending properties of ceramic materials by the improved Hopkinson pressure bar system. The tested ceramic specimens have different static bending strengths. The dimensionless defl...
The three-point bending test was performed to explore the dynamic anti-bending properties of ceramic materials by the improved Hopkinson pressure bar system. The tested ceramic specimens have different static bending strengths. The dimensionless defl...
2009, 29(2): 172-176.
doi: 10.11883/1001-1455(2009)02-0172-05
Abstract:
Underwater explosion tests were conducted in a water tank withstanding the explosion of a 8-kg-TNT equivalent charge.The far-field pressure-time curves of TNT, RS211, HLZY-1 and HLZY-3 were measured with the PCB138 pressure gauges. The shock wave per...
Underwater explosion tests were conducted in a water tank withstanding the explosion of a 8-kg-TNT equivalent charge.The far-field pressure-time curves of TNT, RS211, HLZY-1 and HLZY-3 were measured with the PCB138 pressure gauges. The shock wave per...
2009, 29(2): 177-181.
doi: 10.11883/1001-1455(2009)02-0177-05
Abstract:
A numerical simulation of the toroidal shock wave motion in a cylindrical shock tube was carried out using the discontinuous finite element method, which was developed to solve the axisymmetric Euler equations based on two-dimensional conservation la...
A numerical simulation of the toroidal shock wave motion in a cylindrical shock tube was carried out using the discontinuous finite element method, which was developed to solve the axisymmetric Euler equations based on two-dimensional conservation la...
2009, 29(2): 182-188.
doi: 10.11883/1001-1455(2009)02-0182-07
Abstract:
Adopting the wavelet packet analysis technique, the energy distribution of the vibration, which was induced in the process of tunnel blasting excavation under the high in-situ stress conditions, was obtained. Analysis on the test data shows that the ...
Adopting the wavelet packet analysis technique, the energy distribution of the vibration, which was induced in the process of tunnel blasting excavation under the high in-situ stress conditions, was obtained. Analysis on the test data shows that the ...
2009, 29(2): 189-193.
doi: 10.11883/1001-1455(2009)02-0189-05
Abstract:
Taking cavity expansion in an elastic medium as the object of study, using the theory that movement fields on the boundary conditions of velocity and stress have the same potential, applying Laplace transformation and its convolution theorem, transfo...
Taking cavity expansion in an elastic medium as the object of study, using the theory that movement fields on the boundary conditions of velocity and stress have the same potential, applying Laplace transformation and its convolution theorem, transfo...
2009, 29(2): 194-198.
doi: 10.11883/1001-1455(2009)02-0194-05
Abstract:
Aimed at the disadvantage of the traditional wavelet transform maximum modulus (WTMM) denoising method not to identify all signal characteristics, an improved denoising method based on the WTMM technique was proposed, by using adaptive decomposition ...
Aimed at the disadvantage of the traditional wavelet transform maximum modulus (WTMM) denoising method not to identify all signal characteristics, an improved denoising method based on the WTMM technique was proposed, by using adaptive decomposition ...
2009, 29(2): 199-204.
doi: 10.11883/1001-1455(2009)02-0199-06
Abstract:
The complex problem on damage experienced by missile projects impacted by blast wave was simplified to explore the damage mechanism of the missile structures. Mechanical damage of missile projects was estimated with the dynamics knowledge. A numerica...
The complex problem on damage experienced by missile projects impacted by blast wave was simplified to explore the damage mechanism of the missile structures. Mechanical damage of missile projects was estimated with the dynamics knowledge. A numerica...
2009, 29(2): 205-208.
doi: 10.11883/1001-1455(2009)02-0205-04
Abstract:
The voltage and current of an exploding wire before its complete evaporation was obtained experimentally, and the variation of wire resistance and other parameters were calculated based on the experimental results. Bennett and Hobsons models were app...
The voltage and current of an exploding wire before its complete evaporation was obtained experimentally, and the variation of wire resistance and other parameters were calculated based on the experimental results. Bennett and Hobsons models were app...
2009, 29(2): 209-212.
doi: 10.11883/1001-1455(2009)02-0209-04
Abstract:
A combinational equation of state based on the experimental isentropic data for detonation products was deduced. Different equations of state for detonation products were used to simulate numerically detonation behaviors of explosives. Comparison bet...
A combinational equation of state based on the experimental isentropic data for detonation products was deduced. Different equations of state for detonation products were used to simulate numerically detonation behaviors of explosives. Comparison bet...
2009, 29(2): 213-216.
doi: 10.11883/1001-1455(2009)02-0213-04
Abstract:
A water tank was designed to explore bubble pulses of underwater explosion. In the designed water tank, small-scale underwater explosion tests were conducted for different TNT-equivalent PETN charges of 0.125, 1.000, 3.370, 8.000 g. After explosion o...
A water tank was designed to explore bubble pulses of underwater explosion. In the designed water tank, small-scale underwater explosion tests were conducted for different TNT-equivalent PETN charges of 0.125, 1.000, 3.370, 8.000 g. After explosion o...
2009, 29(2): 217-220.
doi: 10.11883/1001-1455(2009)02-0217-04
Abstract:
Shock-induced temperature rise of the porous liner before collapse was calculated based on the Grneisen equation of state revised by Herrmann, effect of porosity on the shaped charge break-up time was analyzed theoretically. The stability of jets pro...
Shock-induced temperature rise of the porous liner before collapse was calculated based on the Grneisen equation of state revised by Herrmann, effect of porosity on the shaped charge break-up time was analyzed theoretically. The stability of jets pro...
2009, 29(2): 221-224.
doi: 10.11883/1001-1455(2009)02-0221-04
Abstract:
A bomb-borne solid-state recorder was proposed to record the explosion-induced high-shock signals.In this solid-state recorder, the FPGA device XC2S30 is used as the core controlling chip.With the joint function of the A/D controller, the high-speed ...
A bomb-borne solid-state recorder was proposed to record the explosion-induced high-shock signals.In this solid-state recorder, the FPGA device XC2S30 is used as the core controlling chip.With the joint function of the A/D controller, the high-speed ...
