2013 Vol. 33, No. 4
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2013, 33(4): 337-343.
doi: 10.11883/1001-1455(2013)04-0337-07
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Abstract:
A simplified jet-flow model was proposed to understand the impact effects of underwater explosion-induced gas bubbles on the structures near explosive charges. The simplified jetflow model was based on the assumption that the displacement of the bub...
A simplified jet-flow model was proposed to understand the impact effects of underwater explosion-induced gas bubbles on the structures near explosive charges. The simplified jetflow model was based on the assumption that the displacement of the bub...
2013, 33(4): 344-350.
doi: 10.11883/1001-1455(2013)04-0344-07
Abstract:
By taking the engineering geology of the Fe-Zn polymetallic ore in Chaobuleng mine as an example, based on the blast damage theory of rock, the FLAC-3D software was adopted and ultrasonic tests were carried out to systematically explore the cumulativ...
By taking the engineering geology of the Fe-Zn polymetallic ore in Chaobuleng mine as an example, based on the blast damage theory of rock, the FLAC-3D software was adopted and ultrasonic tests were carried out to systematically explore the cumulativ...
2013, 33(4): 351-356.
doi: 10.11883/1001-1455(2013)04-0351-06
Abstract:
Aimed at the problem of gas explosion in coal mine after sealing the fire zone, experiments were conducted to analyze the impact factors of gas explosion limits including temperature, pressure, combustible gas (CO) and inert gas (N2 and CO2). The exp...
Aimed at the problem of gas explosion in coal mine after sealing the fire zone, experiments were conducted to analyze the impact factors of gas explosion limits including temperature, pressure, combustible gas (CO) and inert gas (N2 and CO2). The exp...
2013, 33(4): 357-362.
doi: 10.11883/1001-1455(2013)04-0357-06
Abstract:
Two common powders in coal mine laneways, coal dust and rock dust, were spread evenly at the experimental tube bottoms, respectively. Subtle thermocouples and flame photoelectric sensors were adopted to obtain the premixed methane-air flame parameter...
Two common powders in coal mine laneways, coal dust and rock dust, were spread evenly at the experimental tube bottoms, respectively. Subtle thermocouples and flame photoelectric sensors were adopted to obtain the premixed methane-air flame parameter...
2013, 33(4): 363-368.
doi: 10.11883/1001-1455(2013)04-0363-06
Abstract:
An experimental device was established and it included a test pipeline with 89-mm diameter, 4.5-mm wall thickness and 300-mm length. By choosing the stoichiometric premixed C2H2-air gas as the objective, the established device was used to experimenta...
An experimental device was established and it included a test pipeline with 89-mm diameter, 4.5-mm wall thickness and 300-mm length. By choosing the stoichiometric premixed C2H2-air gas as the objective, the established device was used to experimenta...
2013, 33(4): 369-374.
doi: 10.11883/1001-1455(2013)04-0369-06
Abstract:
Dynamic splitting tests were carried out by using a split Hopkinson pressure bar (SHPB) for the expanded polystyrene (EPS) concrete with the different volume fractions of EPS. An empirical formula was proposed to describe the relationship between the...
Dynamic splitting tests were carried out by using a split Hopkinson pressure bar (SHPB) for the expanded polystyrene (EPS) concrete with the different volume fractions of EPS. An empirical formula was proposed to describe the relationship between the...
2013, 33(4): 375-380.
doi: 10.11883/1001-1455(2013)04-0375-06
Abstract:
To explore the influences on quasistatic pressure by the chemical reactions between explosion products and oxygen in constraint space after explosions, based on the energy conservation and ideal gas state equations, a formula was proposed to calcula...
To explore the influences on quasistatic pressure by the chemical reactions between explosion products and oxygen in constraint space after explosions, based on the energy conservation and ideal gas state equations, a formula was proposed to calcula...
2013, 33(4): 381-386.
doi: 10.11883/1001-1455(2013)04-0381-06
Abstract:
Charpy pendulum impact tests were carried out on S30408 austenitic stainless steel base and weld metals at -196 ℃. The modified compliance changing rate method was used to obtain the crack initiation point of the base metal specimen. The analyses s...
Charpy pendulum impact tests were carried out on S30408 austenitic stainless steel base and weld metals at -196 ℃. The modified compliance changing rate method was used to obtain the crack initiation point of the base metal specimen. The analyses s...
2013, 33(4): 387-393.
doi: 10.11883/1001-1455(2013)04-0387-07
Abstract:
Based on the research about the flying-plate motion features of the single-layer explosive reactive armor, those of the double-layer explosive reactive armor were systematically analyzed and a model was developed to describe the flyingplate motion f...
Based on the research about the flying-plate motion features of the single-layer explosive reactive armor, those of the double-layer explosive reactive armor were systematically analyzed and a model was developed to describe the flyingplate motion f...
2013, 33(4): 394-400.
doi: 10.11883/1001-1455(2013)04-0394-07
Abstract:
A cook-off simulation model for composite charge (interior JO-9159/exterior JB-9014) was established to investigate the characteristics of explosive thermal reaction at different heating rates. The thermal responses of the composite charges with diff...
A cook-off simulation model for composite charge (interior JO-9159/exterior JB-9014) was established to investigate the characteristics of explosive thermal reaction at different heating rates. The thermal responses of the composite charges with diff...
2013, 33(4): 401-407.
doi: 10.11883/1001-1455(2013)04-0401-07
Abstract:
To explore the spallation in ceramic impacted by an aluminum flyer, the modified SPH method was used to simulate the stress wave propagation in ceramic. The results show that the simulated free-surface velocity histories are in agreement with the ...
To explore the spallation in ceramic impacted by an aluminum flyer, the modified SPH method was used to simulate the stress wave propagation in ceramic. The results show that the simulated free-surface velocity histories are in agreement with the ...
2013, 33(4): 408-414.
doi: 10.11883/1001-1455(2013)04-0408-07
Abstract:
The current major simulation methods for building structure collapse were summarized and these methods were grouped under four heads: pre-specified damage and failure criteria, implicit finite element method, explicit finite element method and discre...
The current major simulation methods for building structure collapse were summarized and these methods were grouped under four heads: pre-specified damage and failure criteria, implicit finite element method, explicit finite element method and discre...
2013, 33(4): 415-419.
doi: 10.11883/1001-1455(2013)04-0415-05
Abstract:
Based on the theoretical analyses, a set of experimental equipment, which consisting of a 20-litre closed spherical container, a gas distribution system, an ignition system, a heating system and a data acquisition system, was adopted to experimentall...
Based on the theoretical analyses, a set of experimental equipment, which consisting of a 20-litre closed spherical container, a gas distribution system, an ignition system, a heating system and a data acquisition system, was adopted to experimentall...
2013, 33(4): 420-424.
doi: 10.11883/1001-1455(2013)04-0420-05
Abstract:
A high-resolution computational framework is established to solve the shaped charge jet. An expression which can be used in the Eulerian code, considering temperature rises caused by both shock waves and plastic work, is proposed. The selfdeveloped ...
A high-resolution computational framework is established to solve the shaped charge jet. An expression which can be used in the Eulerian code, considering temperature rises caused by both shock waves and plastic work, is proposed. The selfdeveloped ...
2013, 33(4): 425-429.
doi: 10.11883/1001-1455(2013)04-0425-05
Abstract:
The AUTODYN-2D hydrocode was applied to numerically simulate the penetration process of the 1.6-m-diameter cylindrical concrete target with the length of 2 m by a 3.0-caliber-radius-head, ogive-nose projectile with the diameter of 75 mm and the lengt...
The AUTODYN-2D hydrocode was applied to numerically simulate the penetration process of the 1.6-m-diameter cylindrical concrete target with the length of 2 m by a 3.0-caliber-radius-head, ogive-nose projectile with the diameter of 75 mm and the lengt...
2013, 33(4): 430-437.
doi: 10.11883/1001-1455(2013)04-0430-08
Abstract:
Flame distortion induced by shock waves frequently occurs in natural and man-made phenomena. To deeply understand the characteristics of flame distortion and the resulting variations of mixing and combustion, a two-dimensional numerical study of a sp...
Flame distortion induced by shock waves frequently occurs in natural and man-made phenomena. To deeply understand the characteristics of flame distortion and the resulting variations of mixing and combustion, a two-dimensional numerical study of a sp...
2013, 33(4): 438-443.
doi: 10.11883/1001-1455(2013)04-0438-06
Abstract:
The tensile plasticity flow properties of high-strength structural steel DH36 were systematically studied at the temperature range from 293 to 800 K and the strain-rate range from 0.001 to 0.1 s-1 by using a quasi-static testing machine. And the high...
The tensile plasticity flow properties of high-strength structural steel DH36 were systematically studied at the temperature range from 293 to 800 K and the strain-rate range from 0.001 to 0.1 s-1 by using a quasi-static testing machine. And the high...
2013, 33(4): 444-448.
doi: 10.11883/1001-1455(2013)04-0444-05
Abstract:
A central igniter tube was designed according to engineering requirements and firing tests were completed. By considering the large length-to-diameter ratio and consolidated charge of the designed igniter tube, a one-dimensional, two-phase flow model...
A central igniter tube was designed according to engineering requirements and firing tests were completed. By considering the large length-to-diameter ratio and consolidated charge of the designed igniter tube, a one-dimensional, two-phase flow model...
