2009 Vol. 29, No. 4
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2009, 29(4): 337-344.
doi: 10.11883/1001-1455(2009)04-0337-08
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Abstract:
Some examples of both flexible protection and stiff protection were discussed in connection with the authors research results to explore influences of stress wave effects and material strain-rate effects on structure safety protection under intense d...
Some examples of both flexible protection and stiff protection were discussed in connection with the authors research results to explore influences of stress wave effects and material strain-rate effects on structure safety protection under intense d...
2009, 29(4): 345-350.
doi: 10.11883/1001-1455(2009)04-0345-06
Abstract:
A series of quasi-static axial compression tests were conducted on pseudo-elastic TiNi shells by an MTS 809 material testing system to observe their dynamic progressive buckling responses. And numerical simulations were carried out to analyze phase t...
A series of quasi-static axial compression tests were conducted on pseudo-elastic TiNi shells by an MTS 809 material testing system to observe their dynamic progressive buckling responses. And numerical simulations were carried out to analyze phase t...
2009, 29(4): 351-355.
doi: 10.11883/1001-1455(2009)04-0351-05
Abstract:
Two kinds of the penetrating rods, which were made of tungsten heavy alloy and tungsten-fiber-reinforced Zr-based metallic glass composite material, respectively, were used to penetrate the 30CrMnMo steel target plates in the penetration experiments....
Two kinds of the penetrating rods, which were made of tungsten heavy alloy and tungsten-fiber-reinforced Zr-based metallic glass composite material, respectively, were used to penetrate the 30CrMnMo steel target plates in the penetration experiments....
2009, 29(4): 356-360.
doi: 10.11883/1001-1455(2009)04-0356-05
Abstract:
A large number of experiments were conducted, and the experimental results were reported and discussed. The quantitative results were obtained based on the measurement in the tests by a ballistic pendulum with corresponding sensors, and then the defo...
A large number of experiments were conducted, and the experimental results were reported and discussed. The quantitative results were obtained based on the measurement in the tests by a ballistic pendulum with corresponding sensors, and then the defo...
2009, 29(4): 361-366.
doi: 10.11883/1001-1455(2009)04-0361-06
Abstract:
Ultrahigh-performance cementitious composites (UHPCC) with 200 MPa compressive strength were prepared by substitution of ultrafine industrial waste powder for large quantity of cement by weight and replacement of ground fine quartz sand with natural ...
Ultrahigh-performance cementitious composites (UHPCC) with 200 MPa compressive strength were prepared by substitution of ultrafine industrial waste powder for large quantity of cement by weight and replacement of ground fine quartz sand with natural ...
2009, 29(4): 367-374.
doi: 10.11883/1001-1455(2009)04-0367-08
Abstract:
Based on the theory for coupled vibrations of master-slave systems, numerical experiments were carried out to explore how to evaluate the shock resistance and how to design the shock protection for shipboard equipments, especially for large-scale shi...
Based on the theory for coupled vibrations of master-slave systems, numerical experiments were carried out to explore how to evaluate the shock resistance and how to design the shock protection for shipboard equipments, especially for large-scale shi...
2009, 29(4): 375-379.
doi: 10.11883/1001-1455(2009)04-0375-05
Abstract:
Based on the theory for coupled vibrations of master-slave systems, by choosing shipboard supercharged boilers and gear cases as research objects, the numerical statistical characteristics of numerical experiments for ship hull and equipment integrat...
Based on the theory for coupled vibrations of master-slave systems, by choosing shipboard supercharged boilers and gear cases as research objects, the numerical statistical characteristics of numerical experiments for ship hull and equipment integrat...
2009, 29(4): 380-384.
doi: 10.11883/1001-1455(2009)04-0380-05
Abstract:
The common node separate reinforced concrete model was adopted to numerically simulate the fold blasting collapse processes of frame-tube structures. The two blasting methods used in the three-dimensional simulations included the bottom blasting and ...
The common node separate reinforced concrete model was adopted to numerically simulate the fold blasting collapse processes of frame-tube structures. The two blasting methods used in the three-dimensional simulations included the bottom blasting and ...
2009, 29(4): 385-389.
doi: 10.11883/1001-1455(2009)04-0385-05
Abstract:
On the base of the known experimental researches, 94 field experiments of chemical explosion were carried out to investigate contact explosion damage effects of middle-high strength steel fiber reinforced concrete plates. The design of test parameter...
On the base of the known experimental researches, 94 field experiments of chemical explosion were carried out to investigate contact explosion damage effects of middle-high strength steel fiber reinforced concrete plates. The design of test parameter...
2009, 29(4): 390-394.
doi: 10.11883/1001-1455(2009)04-0390-05
Abstract:
A mathematical model, considering the inner and outer fields of explosion vessels, was introduced to explore the induced mechanism of high explosion-vented pressures and the characteristics of flame and pressure transmission in spherical vessels. Bas...
A mathematical model, considering the inner and outer fields of explosion vessels, was introduced to explore the induced mechanism of high explosion-vented pressures and the characteristics of flame and pressure transmission in spherical vessels. Bas...
2009, 29(4): 395-400.
doi: 10.11883/1001-1455(2009)04-0395-06
Abstract:
In order to explore the protective effects of the elastic rubber sandwich layer coated onto a ship hull, a series of 5-kg-TNT-equivalent underwater explosion tests were conducted on a floating steel box before and after the rubber sandwich was coated...
In order to explore the protective effects of the elastic rubber sandwich layer coated onto a ship hull, a series of 5-kg-TNT-equivalent underwater explosion tests were conducted on a floating steel box before and after the rubber sandwich was coated...
2009, 29(4): 401-407.
doi: 10.11883/1001-1455(2009)04-0401-07
Abstract:
According to the nonlinear links between blasting-vibration-induced damage degree and its influencing factors, a rough set-based fuzzy-neural network model is proposed to seek a method that can overcome the limitations in the single-factor case and i...
According to the nonlinear links between blasting-vibration-induced damage degree and its influencing factors, a rough set-based fuzzy-neural network model is proposed to seek a method that can overcome the limitations in the single-factor case and i...
2009, 29(4): 408-412.
doi: 10.11883/1001-1455(2009)04-0408-05
Abstract:
The equations for one-dimensional radiation hydrodynamics in spherical symmetry were applied to the early fireball phenomenology of strong explosions with different yields. Evolutions of radiation fronts and case shocks for these early fireballs were...
The equations for one-dimensional radiation hydrodynamics in spherical symmetry were applied to the early fireball phenomenology of strong explosions with different yields. Evolutions of radiation fronts and case shocks for these early fireballs were...
2009, 29(4): 413-418.
doi: 10.11883/1001-1455(2009)04-0413-06
Abstract:
Using the transparent material PMMA, a model experiment was carried out by the transmitted dynamic caustics to obtain a series of dynamic caustic photos. By the experimental results, the directional fracture characteristics of crack tips, such as dyn...
Using the transparent material PMMA, a model experiment was carried out by the transmitted dynamic caustics to obtain a series of dynamic caustic photos. By the experimental results, the directional fracture characteristics of crack tips, such as dyn...
2009, 29(4): 419-424.
doi: 10.11883/1001-1455(2009)04-0419-06
Abstract:
By means of the improved SHPB with axial pre-pressure and confining pressure, a series of experiments on sandstone were carried out to investigate the energy consumption in rock fracturing during the course of deep underground resources exploitation....
By means of the improved SHPB with axial pre-pressure and confining pressure, a series of experiments on sandstone were carried out to investigate the energy consumption in rock fracturing during the course of deep underground resources exploitation....
2009, 29(4): 425-428.
doi: 10.11883/1001-1455(2009)04-0425-04
Abstract:
The modified Friedlander equation was introduced to analyze the explosive shock-wave overpressure transmission varied with time in air. The logarithm of the logarithm of the exponential attenuation factor in the equation was found as a linear functio...
The modified Friedlander equation was introduced to analyze the explosive shock-wave overpressure transmission varied with time in air. The logarithm of the logarithm of the exponential attenuation factor in the equation was found as a linear functio...
2009, 29(4): 429-433.
doi: 10.11883/1001-1455(2009)04-0429-05
Abstract:
A standard Godbert-Greenwald furnace apparatus was used to measure minimum ignition temperatures of magnesium dust cloud under different conditions. Experimental results reveal that corresponding minimum ignition temperatures of dust cloud for four m...
A standard Godbert-Greenwald furnace apparatus was used to measure minimum ignition temperatures of magnesium dust cloud under different conditions. Experimental results reveal that corresponding minimum ignition temperatures of dust cloud for four m...
2009, 29(4): 434-438.
doi: 10.11883/1001-1455(2009)04-0434-05
Abstract:
An engineering algorithm model was proposed to simulate the damage of dual-wall structures from debris clouds generated by hypervelocity impact. The corresponding hypervelocity impact experiment was conducted on the aluminum dual-wall structure impac...
An engineering algorithm model was proposed to simulate the damage of dual-wall structures from debris clouds generated by hypervelocity impact. The corresponding hypervelocity impact experiment was conducted on the aluminum dual-wall structure impac...
2009, 29(4): 439-443.
doi: 10.11883/1001-1455(2009)04-0439-05
Abstract:
A mechanical delay ignition device was designed on the basis of the characteristics of the investigated obstacle-breaching rocket projectile. The designed ignition device can check the obstacle-breaching power and make the kinetic energy penetrating ...
A mechanical delay ignition device was designed on the basis of the characteristics of the investigated obstacle-breaching rocket projectile. The designed ignition device can check the obstacle-breaching power and make the kinetic energy penetrating ...
2009, 29(4): 444-448.
doi: 10.11883/1001-1455(2009)04-0444-05
Abstract:
By the method of piecewise ploytropic exponent, the whole recoil process was divided into four different stages and the actual thermodynamic characters of the gas in each stage were analyzed. Theoretical analysis and experiments indicate that there a...
By the method of piecewise ploytropic exponent, the whole recoil process was divided into four different stages and the actual thermodynamic characters of the gas in each stage were analyzed. Theoretical analysis and experiments indicate that there a...
