2014 Vol. 34, No. 2
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2014, 34(2): 129-136.
doi: 10.11883/1001-1455(2014)02-0129-08
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Abstract:
Aimed to the laser-driven flyer plate technique, laser-driven flyer experiments were conducted by using single pulsed laser beams at 1 064nm, of 15ns duration and up to 2Jenergy to explore the influences of the laser energy profiles as well as the me...
Aimed to the laser-driven flyer plate technique, laser-driven flyer experiments were conducted by using single pulsed laser beams at 1 064nm, of 15ns duration and up to 2Jenergy to explore the influences of the laser energy profiles as well as the me...
2014, 34(2): 137-144.
doi: 10.11883/1001-1455(2014)02-0137-08
Abstract:
By choosing naked cylindrical 75-g-TNT charges as explosion sources, impact experiments were carried out on steel cylindrical shells with the wall thickness of 2.75mm and the outer diameter of 100mm.The damage characteristics of the shells were obtai...
By choosing naked cylindrical 75-g-TNT charges as explosion sources, impact experiments were carried out on steel cylindrical shells with the wall thickness of 2.75mm and the outer diameter of 100mm.The damage characteristics of the shells were obtai...
2014, 34(2): 145-152.
doi: 10.11883/1001-1455(2014)02-0145-08
Abstract:
By considering the action of blasting wave, explosion-induced gas and initial gas pressure as well as geo-stress endured by coal seam simultaneously, the deep-hole blasting in low-permeability high-gas-content coal seams under different geo-stresses ...
By considering the action of blasting wave, explosion-induced gas and initial gas pressure as well as geo-stress endured by coal seam simultaneously, the deep-hole blasting in low-permeability high-gas-content coal seams under different geo-stresses ...
2014, 34(2): 153-160.
doi: 10.11883/1001-1455(2014)02-0153-08
Abstract:
Based on the field testing of the blasting vibration on a large-span project of the underground diversion tunnel in Xiluodu, which locates in the southwest of China, with middle geostress, the dynamic responses of the surrounding rock during the blas...
Based on the field testing of the blasting vibration on a large-span project of the underground diversion tunnel in Xiluodu, which locates in the southwest of China, with middle geostress, the dynamic responses of the surrounding rock during the blas...
2014, 34(2): 161-166.
doi: 10.11883/1001-1455(2014)02-0161-06
Abstract:
The minimum ignition energies of flake aluminum dust-air mixtures with different mass concentrations were tested in a 1.28-L MIKE3tube.According to the logistic regression model based on statistical analysis, the minimum ignition energy of the dust c...
The minimum ignition energies of flake aluminum dust-air mixtures with different mass concentrations were tested in a 1.28-L MIKE3tube.According to the logistic regression model based on statistical analysis, the minimum ignition energy of the dust c...
2014, 34(2): 167-173.
doi: 10.11883/1001-1455(2014)02-0167-07
Abstract:
By considering the particle size, location in random distribution and the composite content, a three-dimensional computation model was developed for explosive particles in free deposition.The pressing process of the explosive particles from free depo...
By considering the particle size, location in random distribution and the composite content, a three-dimensional computation model was developed for explosive particles in free deposition.The pressing process of the explosive particles from free depo...
2014, 34(2): 174-180.
doi: 10.11883/1001-1455(2014)02-0174-07
Abstract:
Experimental investigations and analysis were carried out on the vertical water-entry of the spheres.The development process of the cavities induced by the vertical water-entry of the spheres was discussed including the formation, open, closure and c...
Experimental investigations and analysis were carried out on the vertical water-entry of the spheres.The development process of the cavities induced by the vertical water-entry of the spheres was discussed including the formation, open, closure and c...
2014, 34(2): 181-187.
doi: 10.11883/1001-1455(2014)02-0181-07
Abstract:
A finite element model was developed for tetrachiral honeycombs.By using the developed model, numerical simulations were conducted to explore the deformation modes and energy absorption properties of the tetrachiral honeycombs subjected to different ...
A finite element model was developed for tetrachiral honeycombs.By using the developed model, numerical simulations were conducted to explore the deformation modes and energy absorption properties of the tetrachiral honeycombs subjected to different ...
2014, 34(2): 188-194.
doi: 10.11883/1001-1455(2014)02-0188-07
Abstract:
The initial thermal decomposition pathways of the supercell structures of ε, β and γ modifications at different temperatures were studied by molecular dynamics simulations, using the ReaxFF force field, the NPT and NVT ensembles and the Berendsen met...
The initial thermal decomposition pathways of the supercell structures of ε, β and γ modifications at different temperatures were studied by molecular dynamics simulations, using the ReaxFF force field, the NPT and NVT ensembles and the Berendsen met...
2014, 34(2): 195-201.
doi: 10.11883/1001-1455(2014)02-0195-07
Abstract:
The sandstone samples were heated at the rising temperature rate of 10℃/min from 25℃ to 100, 200, 400, 600, 800 and 1 000℃, respectively, by using a RX3-20-12box-type resistance furnace.They were being kept at the corresponding temperatures for 3h.Th...
The sandstone samples were heated at the rising temperature rate of 10℃/min from 25℃ to 100, 200, 400, 600, 800 and 1 000℃, respectively, by using a RX3-20-12box-type resistance furnace.They were being kept at the corresponding temperatures for 3h.Th...
2014, 34(2): 202-208.
doi: 10.11883/1001-1455(2014)02-0202-07
Abstract:
Simulated ammunitions were equivalent to aluminum-shelled explosives and a new energetic fragment was designed.The nonlinear dynamics software, LS-DYNA, was used to numerically simulate the complete processes of the energetic fragments penetrating th...
Simulated ammunitions were equivalent to aluminum-shelled explosives and a new energetic fragment was designed.The nonlinear dynamics software, LS-DYNA, was used to numerically simulate the complete processes of the energetic fragments penetrating th...
2014, 34(2): 209-215.
doi: 10.11883/1001-1455(2014)02-0209-07
Abstract:
To explore the transient response of a cylindrical cavity in an infinite elastic soil body to sudden anti -plane impact, the general analytical expressions were given for the displacement and stress of the soil, respectively, by using the Laplace tra...
To explore the transient response of a cylindrical cavity in an infinite elastic soil body to sudden anti -plane impact, the general analytical expressions were given for the displacement and stress of the soil, respectively, by using the Laplace tra...
2014, 34(2): 216-222.
doi: 10.11883/1001-1455(2014)02-0216-07
Abstract:
The highly-fluidized geopolymer concrete(HFGC)with the strength grade of C30was prepared by using slag and fly ash as raw material as well as NaOH and Na2CO3as alkali activator.Dynamic compression tests were carried out for the prepared HFGC specimen...
The highly-fluidized geopolymer concrete(HFGC)with the strength grade of C30was prepared by using slag and fly ash as raw material as well as NaOH and Na2CO3as alkali activator.Dynamic compression tests were carried out for the prepared HFGC specimen...
2014, 34(2): 223-228.
doi: 10.11883/1001-1455(2014)02-0223-06
Abstract:
To achieve the dynamic loadings on the large -sized specimens by the explosive shock waves equivalent to the stress wave obtained by a light -gas gun, based on the principle of superposition, the reverse detonation model was introduced to accomplish ...
To achieve the dynamic loadings on the large -sized specimens by the explosive shock waves equivalent to the stress wave obtained by a light -gas gun, based on the principle of superposition, the reverse detonation model was introduced to accomplish ...
2014, 34(2): 229-234.
doi: 10.11883/1001-1455(2014)02-0229-06
Abstract:
Based on ANSYS/LS -DYNA, the ALE method was used to describe the explosive and the air flow field, and the Lagrange method was used to describe the glasses.And the tensile stress failure of the glasses was considered as well as the shear -strain fail...
Based on ANSYS/LS -DYNA, the ALE method was used to describe the explosive and the air flow field, and the Lagrange method was used to describe the glasses.And the tensile stress failure of the glasses was considered as well as the shear -strain fail...
2014, 34(2): 235-240.
doi: 10.11883/1001-1455(2014)02-0235-06
Abstract:
A hemispherical liner was designed and the cushion with the same curvature as the liner was placed between the liner and the explosive.And the forming process of an explosively -formed penetrator from the liner made by reactive material was recorded ...
A hemispherical liner was designed and the cushion with the same curvature as the liner was placed between the liner and the explosive.And the forming process of an explosively -formed penetrator from the liner made by reactive material was recorded ...
Application of M1approach to numerical simulation of radiative transfer in strong explosion fireball
2014, 34(2): 241-246.
doi: 10.11883/1001-1455(2014)02-0241-06
Abstract:
According to the equations for the P1, Minerbo and M1approach models, the variations of their Eddington factors with the anisotropy factors were derived as well as the maximum eigenvalues of the moment equations of the radiative transfer against the ...
According to the equations for the P1, Minerbo and M1approach models, the variations of their Eddington factors with the anisotropy factors were derived as well as the maximum eigenvalues of the moment equations of the radiative transfer against the ...
2014, 34(2): 247-251.
doi: 10.11883/1001-1455(2014)02-0247-05
Abstract:
Aimed to a granular system composed of spherical particles, the particles were divided into a spring -spherical elements system based on the discrete element method.The calculation models were given for the elastic and contact forces between discrete...
Aimed to a granular system composed of spherical particles, the particles were divided into a spring -spherical elements system based on the discrete element method.The calculation models were given for the elastic and contact forces between discrete...
2014, 34(2): 252-256.
doi: 10.11883/1001-1455(2014)02-0252-05
Abstract:
A pulse forming network (PFN)discharge module and a spectroscopy system were employed to discuss the electrical explosion of copper wire.The plasma emission spectra were obtained in the wavelength range of 400-500nm by an Andor SR750spectrograph.Base...
A pulse forming network (PFN)discharge module and a spectroscopy system were employed to discuss the electrical explosion of copper wire.The plasma emission spectra were obtained in the wavelength range of 400-500nm by an Andor SR750spectrograph.Base...
