2009 Vol. 29, No. 5
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2009, 29(5): 449-456.
doi: 10.11883/1001-1455(2009)05-0449-08
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Abstract:
In order to explore the failure mechanism of the structures with adhesively-bonded single-lap joints, a Hopkinson tension bar technique was applied to investigate influences of adherent thickness, temperature and velocity (the maximum velocity at the...
In order to explore the failure mechanism of the structures with adhesively-bonded single-lap joints, a Hopkinson tension bar technique was applied to investigate influences of adherent thickness, temperature and velocity (the maximum velocity at the...
2009, 29(5): 457-462.
doi: 10.11883/1001-1455(2009)05-0457-06
Abstract:
A series of model experiments were conducted to explore the failure modes of stiffened plates subjected to underwater explosion. By analyzing the experimental results, three failure modes were established such as Mode I(large plastic deformation),Mod...
A series of model experiments were conducted to explore the failure modes of stiffened plates subjected to underwater explosion. By analyzing the experimental results, three failure modes were established such as Mode I(large plastic deformation),Mod...
2009, 29(5): 463-468.
doi: 10.11883/1001-1455(2009)05-0463-05
Abstract:
The 75-mm-diameter split Hopkinson pressure bar (SHPB) technique was applied to experimentally obtain axial or radial stress and strain peaks, average strain rates of different concrete specimens laterally confined by steel sleeves under different im...
The 75-mm-diameter split Hopkinson pressure bar (SHPB) technique was applied to experimentally obtain axial or radial stress and strain peaks, average strain rates of different concrete specimens laterally confined by steel sleeves under different im...
2009, 29(5): 468-473.
doi: 10.11883/1001-1455(2009)05-0468-06
Abstract:
Detonation in suspended mixed RDX and aluminum particles in air was numerically simulated with the two-phase flow model. Formation and propagation of detonation was examined and the parameters of detonation were obtained. In calculation the diameter ...
Detonation in suspended mixed RDX and aluminum particles in air was numerically simulated with the two-phase flow model. Formation and propagation of detonation was examined and the parameters of detonation were obtained. In calculation the diameter ...
2009, 29(5): 474-480.
doi: 10.11883/1001-1455(2009)05-0474-07
Abstract:
With the theory of stress wave, it discussed mechanism of jointed rock loosing under blasting load. And this was verified by a numerical simulation using the dynamic finite element method. Results show that, compression of blasting load can store str...
With the theory of stress wave, it discussed mechanism of jointed rock loosing under blasting load. And this was verified by a numerical simulation using the dynamic finite element method. Results show that, compression of blasting load can store str...
2009, 29(5): 481-485.
doi: 10.11883/1001-1455(2009)05-0481-05
Abstract:
An underwater card gap test method was proposed to measure shock sensitivity of explosives by combining the underwater explosion method and the small card gap test. The shock sensitivity of six explosives, which included PETN, RDX, 8701, Desensitized...
An underwater card gap test method was proposed to measure shock sensitivity of explosives by combining the underwater explosion method and the small card gap test. The shock sensitivity of six explosives, which included PETN, RDX, 8701, Desensitized...
2009, 29(5): 486-491.
doi: 10.11883/1001-1455(2009)05-0486-06
Abstract:
Equations of motion were analyzed for governing underground explosion-induced stress waves spreading in an elastic domain to explain that this stress wave transmission processes could be described by a time-independent linear system model. According ...
Equations of motion were analyzed for governing underground explosion-induced stress waves spreading in an elastic domain to explain that this stress wave transmission processes could be described by a time-independent linear system model. According ...
2009, 29(5): 492-496.
doi: 10.11883/1001-1455(2009)05-0492-05
Abstract:
In order to study features of energy distribution for blasting vibration signals, an energy analysis method for blast-induced seismic based on power spectrum is put forward. In some extent, power spectrum density can be regarded as the characterizati...
In order to study features of energy distribution for blasting vibration signals, an energy analysis method for blast-induced seismic based on power spectrum is put forward. In some extent, power spectrum density can be regarded as the characterizati...
2009, 29(5): 497-502.
doi: 10.11883/1001-1455(2009)05-0497-06
Abstract:
A 2-D finite element code was adopted to compute several one-dimensional overdriven shock states of flyer plates impacting on PBX-9501 explosive with the JWL(Tang) equation of state. And the velocities of the flyer plates driven by the explosive were...
A 2-D finite element code was adopted to compute several one-dimensional overdriven shock states of flyer plates impacting on PBX-9501 explosive with the JWL(Tang) equation of state. And the velocities of the flyer plates driven by the explosive were...
2009, 29(5): 503-508.
doi: 10.11883/1001-1455(2009)05-0503-06
Abstract:
Effect of numerical fractures on the computational accuracy is analyzed by introducing artificial numerical fractures. A simple adding-particle technique, which can be easily applied in large deformations, is introduced to prevent numerical fractures...
Effect of numerical fractures on the computational accuracy is analyzed by introducing artificial numerical fractures. A simple adding-particle technique, which can be easily applied in large deformations, is introduced to prevent numerical fractures...
2009, 29(5): 509-515.
doi: 10.11883/1001-1455(2009)05-0509-07
Abstract:
Regarding a viscous shock wave in a high pressure metal as a strong discontinuity, Miller G H, et al pointed out that a little perturbation shock was unstable under little Reynolds number or large viscosity, and material viscosity was a destabilized ...
Regarding a viscous shock wave in a high pressure metal as a strong discontinuity, Miller G H, et al pointed out that a little perturbation shock was unstable under little Reynolds number or large viscosity, and material viscosity was a destabilized ...
2009, 29(5): 516-522.
doi: 10.11883/1001-1455(2009)05-0516-07
Abstract:
The slag- and fly ash-based geopolymer concrete (GC) specimens were prepared by sodium silicate and sodium hydroxide alkali-activated slag and fly ash，the ordinary Portland cement concrete (PC) specimens were prepared by Portland cement, the 28-day-s...
The slag- and fly ash-based geopolymer concrete (GC) specimens were prepared by sodium silicate and sodium hydroxide alkali-activated slag and fly ash，the ordinary Portland cement concrete (PC) specimens were prepared by Portland cement, the 28-day-s...
2009, 29(5): 523-528.
doi: 10.11883/1001-1455(2009)05-0523-06
Abstract:
Ballistic experiments were performed for Kevlar/Vinyl and E-glass/Vinyl 3D orthogonal woven composites (3D-OWC) impacted by spherical and cylindrical bullets. The results show that the anti-penetration abilities of the targets against spherical bulle...
Ballistic experiments were performed for Kevlar/Vinyl and E-glass/Vinyl 3D orthogonal woven composites (3D-OWC) impacted by spherical and cylindrical bullets. The results show that the anti-penetration abilities of the targets against spherical bulle...
2009, 29(5): 529-534.
doi: 10.11883/1001-1455(2009)05-0529-06
Abstract:
Three groups of emulsion explosives were made of the same emulsion matrix mixed with 2%, 3%, 4% and 5% by the mass of hollow glass microspheres respectively in group 1, and with 2%, 3%, 4% and 5% by the mass of expanded perlite respectively in group ...
Three groups of emulsion explosives were made of the same emulsion matrix mixed with 2%, 3%, 4% and 5% by the mass of hollow glass microspheres respectively in group 1, and with 2%, 3%, 4% and 5% by the mass of expanded perlite respectively in group ...
2009, 29(5): 535-541.
doi: 10.11883/1001-1455(2009)05-0535-07
Abstract:
A finite-difference algorithm linking Euler and Lagrange meshes was developed to compute the cavity-decoupling explosion, in which both the explosion products and ideal air in the cavity were subdivided as Euler mesh but the rock around the cavity wa...
A finite-difference algorithm linking Euler and Lagrange meshes was developed to compute the cavity-decoupling explosion, in which both the explosion products and ideal air in the cavity were subdivided as Euler mesh but the rock around the cavity wa...
2009, 29(5): 542-545.
doi: 10.11883/1001-1455(2009)05-0542-04
Abstract:
The split Hopkinson bar technique and the material test system were applied to explore experimentally the mechanical properties of SnAgCu solder at room temperature. The stress-strain curves obtained at different strain rates indicate that SnAgCu sol...
The split Hopkinson bar technique and the material test system were applied to explore experimentally the mechanical properties of SnAgCu solder at room temperature. The stress-strain curves obtained at different strain rates indicate that SnAgCu sol...
2009, 29(5): 546-549.
doi: 10.11883/1001-1455(2009)05-0546-04
Abstract:
A new setup was designed for dynamic tension of metal ring. The line initiation by exploding wire was used in the designed setup. The dynamic tensile experiments of OFHC copper rings at high strain rate were carried out by the designed setup. The rad...
A new setup was designed for dynamic tension of metal ring. The line initiation by exploding wire was used in the designed setup. The dynamic tensile experiments of OFHC copper rings at high strain rate were carried out by the designed setup. The rad...
2009, 29(5): 550-554.
doi: 10.11883/1001-1455(2009)05-0550-05
Abstract:
Submicron -CL-20 particles with the mean particle diameter of 721.9 nm were prepared by the gas antisolvent technology and were confirmed by the SEM results. Polymorphs of submicron -CL-20 were identified by FT-IR spectroscopy. Small-scale gap tests ...
Submicron -CL-20 particles with the mean particle diameter of 721.9 nm were prepared by the gas antisolvent technology and were confirmed by the SEM results. Polymorphs of submicron -CL-20 were identified by FT-IR spectroscopy. Small-scale gap tests ...
2009, 29(5): 555-560.
doi: 10.11883/1001-1455(2009)05-0555-06
Abstract:
This paper studied the analysis and processing method for the measured penetration deceleration data, proposed a new method which combining the modal analysis of the test projectile and test equipment with spectrum analysis of the measured data, and ...
This paper studied the analysis and processing method for the measured penetration deceleration data, proposed a new method which combining the modal analysis of the test projectile and test equipment with spectrum analysis of the measured data, and ...
