2016 Vol. 36, No. 2
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2016, 36(2): 145-152.
doi: 10.11883/1001-1455(2016)02-0145-08
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Abstract:
Using a digital laser dynamic caustics experimental system, the fracture behavior of blast-induced cracks in flawed materials under both ordinary borehole and pre-notched borehole were studied. The results show that the main crack propagating along t...
Using a digital laser dynamic caustics experimental system, the fracture behavior of blast-induced cracks in flawed materials under both ordinary borehole and pre-notched borehole were studied. The results show that the main crack propagating along t...
2016, 36(2): 153-160.
doi: 10.11883/1001-1455(2016)02-0153-08
Abstract:
In this work, by adopting dynamic mesh technology along with the spring based smoothing method and the laying based zone moving method, we have numerically solved the axisymmetric N-S equations, analyzed the flow field mechanism and thermal shock cha...
In this work, by adopting dynamic mesh technology along with the spring based smoothing method and the laying based zone moving method, we have numerically solved the axisymmetric N-S equations, analyzed the flow field mechanism and thermal shock cha...
2016, 36(2): 161-169.
doi: 10.11883/1001-1455(2016)02-0161-09
Abstract:
Based on damage mechanics theory, a mechanical model for rock blasting was established considering of the rock heterogeneity, in which rock blasting was considered as two consecutive stages: the dynamic stage caused by the stress wave and the static ...
Based on damage mechanics theory, a mechanical model for rock blasting was established considering of the rock heterogeneity, in which rock blasting was considered as two consecutive stages: the dynamic stage caused by the stress wave and the static ...
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2016, 36(2): 170-176.
doi: 10.11883/1001-1455(2016)02-0170-07
Abstract:
Based on the blunt projectile impact test of woven Kevlar/Epoxy composite laminates, the deformation and failure modes of the composite laminates subjected to impact load were analyzed. Experimental results show that the deformation and failure behav...
Based on the blunt projectile impact test of woven Kevlar/Epoxy composite laminates, the deformation and failure modes of the composite laminates subjected to impact load were analyzed. Experimental results show that the deformation and failure behav...
2016, 36(2): 177-182.
doi: 10.11883/1001-1455(2016)02-0177-06
Abstract:
In this paper, dynamic behaviors of metal materials driven by collision of head-on sliding detonation waves were diagnosed with pulsed X-ray radiography and DPS, the physical images of free surface ejecta and body fragmentation on Sn and W were obtai...
In this paper, dynamic behaviors of metal materials driven by collision of head-on sliding detonation waves were diagnosed with pulsed X-ray radiography and DPS, the physical images of free surface ejecta and body fragmentation on Sn and W were obtai...
2016, 36(2): 183-188.
doi: 10.11883/1001-1455(2016)02-0183-06
Abstract:
The radius of the initial smoke cloud is an essential parameter frequently used when evaluating the smoke shelter efficiency. In this paper, the expansion process and the initial parameters of the smoke cloud were analyzed using theoretical assumptio...
The radius of the initial smoke cloud is an essential parameter frequently used when evaluating the smoke shelter efficiency. In this paper, the expansion process and the initial parameters of the smoke cloud were analyzed using theoretical assumptio...
2016, 36(2): 189-197.
doi: 10.11883/1001-1455(2016)02-0189-09
Abstract:
Integrating supercritical carbon dioxide jet, known for its capability of reducing the threshold pressure of the rock and protecting the reservoir, with the combined swirling and round jet, known for its capability of enhancing the efficiency of rock...
Integrating supercritical carbon dioxide jet, known for its capability of reducing the threshold pressure of the rock and protecting the reservoir, with the combined swirling and round jet, known for its capability of enhancing the efficiency of rock...
2016, 36(2): 198-209.
doi: 10.11883/1001-1455(2016)02-0198-12
Abstract:
In order to study the evolution of dynamic overpressure of deflagration, a simulation was carried out in an open end pipe. It was found that the dynamic pressure was closely correlated with the gas velocity so that they always arrive at the peak valu...
In order to study the evolution of dynamic overpressure of deflagration, a simulation was carried out in an open end pipe. It was found that the dynamic pressure was closely correlated with the gas velocity so that they always arrive at the peak valu...
2016, 36(2): 210-217.
doi: 10.11883/1001-1455(2016)02-0210-08
Abstract:
Aiming at solving the problem of the double ring-stiffened cylindrical shell structure collided by multiple bodies, a numerical simulation and a dynamic model test were carried out to explore the structural deformation, the impact force change and th...
Aiming at solving the problem of the double ring-stiffened cylindrical shell structure collided by multiple bodies, a numerical simulation and a dynamic model test were carried out to explore the structural deformation, the impact force change and th...
2016, 36(2): 218-223.
doi: 10.11883/1001-1455(2016)02-0218-06
Abstract:
In order to study the gas explosion hazards under different initial temperatures and high pressures, an experimental study was conducted on methane/air explosion under high temperatures and pressures with a special environmental testing system for st...
In order to study the gas explosion hazards under different initial temperatures and high pressures, an experimental study was conducted on methane/air explosion under high temperatures and pressures with a special environmental testing system for st...
2016, 36(2): 224-229.
doi: 10.11883/1001-1455(2016)02-0224-06
Abstract:
The explosive fracturing technique is often adopted to produce and expand fractures due to its great shock waves, thus improving the low permeability of oil reservoirs. Based on the distribution characteristics of the explosive fracturing network and...
The explosive fracturing technique is often adopted to produce and expand fractures due to its great shock waves, thus improving the low permeability of oil reservoirs. Based on the distribution characteristics of the explosive fracturing network and...
2016, 36(2): 230-235.
doi: 10.11883/1001-1455(2016)02-0230-06
Abstract:
The pressure history curves of aluminum fiber explosive and traditional aluminized explosives were measured by air blast experiments, and then the peak pressure, the secondary shock wave, the time of positive phase and the impulse were obtained by an...
The pressure history curves of aluminum fiber explosive and traditional aluminized explosives were measured by air blast experiments, and then the peak pressure, the secondary shock wave, the time of positive phase and the impulse were obtained by an...
2016, 36(2): 236-241.
doi: 10.11883/1001-1455(2016)02-0236-06
Abstract:
To evaluate the work capability of the aluminum fiber explosive, the field test of explosion cavity expansion in soil by aluminum fiber explosive was performed, and the numerical simulation analysis using the software of ANSYS/LS-DYNA was carried out...
To evaluate the work capability of the aluminum fiber explosive, the field test of explosion cavity expansion in soil by aluminum fiber explosive was performed, and the numerical simulation analysis using the software of ANSYS/LS-DYNA was carried out...
2016, 36(2): 242-247.
doi: 10.11883/1001-1455(2016)02-0242-06
Abstract:
In order to study the power capability of RDX-based PBX and determine the parameters of the JWL equation of state, the ∅50 mm standard cylinder test of RDX-based PBX and TNT were carried out, the expansion distance-time curve and velocity-time curve ...
In order to study the power capability of RDX-based PBX and determine the parameters of the JWL equation of state, the ∅50 mm standard cylinder test of RDX-based PBX and TNT were carried out, the expansion distance-time curve and velocity-time curve ...
2016, 36(2): 248-252.
doi: 10.11883/1001-1455(2016)02-0248-05
Abstract:
Aim to optimize the design of MEMS copper azide fuze and investgate the mechanism underlying the process of the copper azide explosive-driven flyer plate. According to the actual design of the micro-charge fuze and its related experiments, the proces...
Aim to optimize the design of MEMS copper azide fuze and investgate the mechanism underlying the process of the copper azide explosive-driven flyer plate. According to the actual design of the micro-charge fuze and its related experiments, the proces...
2016, 36(2): 253-258.
doi: 10.11883/1001-1455(2016)02-0253-06
Abstract:
To study the hexagonal honeycomb shelter's penetration-resistance performance, a series of experiments were done using a kind of projectile with a diameter of 15 mm. Compared with the steel reinforced concrete shelter, the penetration damage done to ...
To study the hexagonal honeycomb shelter's penetration-resistance performance, a series of experiments were done using a kind of projectile with a diameter of 15 mm. Compared with the steel reinforced concrete shelter, the penetration damage done to ...
2016, 36(2): 259-268.
doi: 10.11883/1001-1455(2016)02-0259-10
Abstract:
The pyroshock environment of satellite-rocket separation is the severest mechanical environment during launching, which is characterized by transient high acceleration and high frequency. While it does not necessarily cause a satellite any structural...
The pyroshock environment of satellite-rocket separation is the severest mechanical environment during launching, which is characterized by transient high acceleration and high frequency. While it does not necessarily cause a satellite any structural...
2016, 36(2): 269-278.
doi: 10.11883/1001-1455(2016)02-0269-10
Abstract:
Studies on buildings and structures subjected to aircraft impact have been of greater concern, because malicious aircraft crash is one of the major means adopted in terrorist attacks due to the disastrous consequences and extremely bad influences inv...
Studies on buildings and structures subjected to aircraft impact have been of greater concern, because malicious aircraft crash is one of the major means adopted in terrorist attacks due to the disastrous consequences and extremely bad influences inv...
2016, 36(2): 279-284.
doi: 10.11883/1001-1455(2016)02-0279-06
Abstract:
In order to investigate the influence of polyester fiber on impact characteristics of permeable asphalt concrete, ∅74 mm steel SHPB apparatus is adopted to conduct impact compressive test with various strain rates and different polyester fiber conten...
In order to investigate the influence of polyester fiber on impact characteristics of permeable asphalt concrete, ∅74 mm steel SHPB apparatus is adopted to conduct impact compressive test with various strain rates and different polyester fiber conten...
2016, 36(2): 285-288.
doi: 10.11883/1001-1455(2016)02-0285-04
Abstract:
The quasi-static and dynamic compression behavior of beryllium was investigated by using MTS and SHPB at different temperatures. Investigated results show that beryllium exhibits excellent plasticity under compression. Sensitive to the changes in tem...
The quasi-static and dynamic compression behavior of beryllium was investigated by using MTS and SHPB at different temperatures. Investigated results show that beryllium exhibits excellent plasticity under compression. Sensitive to the changes in tem...
