2017 Vol. 37, No. 3
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On ballistic trajectory of rigid projectile normal penetration based on a meso-scopic concrete model
2017, 37(3): 377-386.
doi: 10.11883/1001-1455(2017)03-0377-10
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Abstract:
To study the effect of the concrete's mesoscopic factors on the deflection of the rigid projectile's ballistic trajectory, we established a 3-D mesoscopic model for the concrete based on the idea of randomly distributed aggregates, analyzed the cause...
To study the effect of the concrete's mesoscopic factors on the deflection of the rigid projectile's ballistic trajectory, we established a 3-D mesoscopic model for the concrete based on the idea of randomly distributed aggregates, analyzed the cause...
2017, 37(3): 387-395.
doi: 10.11883/1001-1455(2017)03-0387-09
Abstract:
An analytical model is established to study the flexible crashworthy device which is developed independently in China. The model is composed of a distributed springs linking and supporting two hexagonal-shape box-beam structures that encircle the bri...
An analytical model is established to study the flexible crashworthy device which is developed independently in China. The model is composed of a distributed springs linking and supporting two hexagonal-shape box-beam structures that encircle the bri...
2017, 37(3): 396-404.
doi: 10.11883/1001-1455(2017)03-0396-09
Abstract:
The blast mitigation behavior of a density-graded cellular sacrificial cladding is investigated by using a nonlinear plastic shock model and a cell-based finite element model. Based on a rate-independent, rigid-plastic hardening idealization, a theor...
The blast mitigation behavior of a density-graded cellular sacrificial cladding is investigated by using a nonlinear plastic shock model and a cell-based finite element model. Based on a rate-independent, rigid-plastic hardening idealization, a theor...
2017, 37(3): 405-414.
doi: 10.11883/1001-1455(2017)03-0405-10
Abstract:
Experiments on reactive powder concrete-filled steel tube (RPC-FST) specimens after exposure to high temperature were performed by using a split Hopkinson pressure bar (SHPB) apparatus, and the influences of strain rate effects and temperature effect...
Experiments on reactive powder concrete-filled steel tube (RPC-FST) specimens after exposure to high temperature were performed by using a split Hopkinson pressure bar (SHPB) apparatus, and the influences of strain rate effects and temperature effect...
2017, 37(3): 415-421.
doi: 10.11883/1001-1455(2017)03-0415-07
Abstract:
In this work we used the laser velocity interferometry for measuring particle velocities and the wedge-shaped test explosive to study the structure of the chemical reaction zone of JBO-9021, a new insensitive high explosive (80 weight% TATB explosive...
In this work we used the laser velocity interferometry for measuring particle velocities and the wedge-shaped test explosive to study the structure of the chemical reaction zone of JBO-9021, a new insensitive high explosive (80 weight% TATB explosive...
2017, 37(3): 422-430.
doi: 10.11883/1001-1455(2017)03-0422-09
Abstract:
Magnetohydrodynamics equations are adopted to simulate the process of spherical heavy gas explosion. Meanwhile, in order to ensure the divergence of magnetic field is zero in each step, we use the CTU+CT algorithm which is derived by 12-solve CTU alg...
Magnetohydrodynamics equations are adopted to simulate the process of spherical heavy gas explosion. Meanwhile, in order to ensure the divergence of magnetic field is zero in each step, we use the CTU+CT algorithm which is derived by 12-solve CTU alg...
2017, 37(3): 431-438.
doi: 10.11883/1001-1455(2017)03-0431-08
Abstract:
Based on the Euler beam theory, the dynamic buckling of the functionally graded beam subjected to thermal shock was investigated in the Hamilton system. The material properties of the functionally graded beam were assumed to be graded in the thicknes...
Based on the Euler beam theory, the dynamic buckling of the functionally graded beam subjected to thermal shock was investigated in the Hamilton system. The material properties of the functionally graded beam were assumed to be graded in the thicknes...
2017, 37(3): 439-446.
doi: 10.11883/1001-1455(2017)03-0439-08
Abstract:
Experimental studies of the slender body's underwater movement were conducted using high-speed camera. Based on the results from the experiment, we examined the characteristics of the cavitation and ballistic of the slender body moving underwater. Th...
Experimental studies of the slender body's underwater movement were conducted using high-speed camera. Based on the results from the experiment, we examined the characteristics of the cavitation and ballistic of the slender body moving underwater. Th...
2017, 37(3): 447-452.
doi: 10.11883/1001-1455(2017)03-0447-06
Abstract:
An experimental circular pipeline with a length of 2 800 mm and a diameter of 50 mm was established to study the gaseous detonation propagation. Photodiode detectors were used to obtain the flame propagation velocity and the smoke film method to get ...
An experimental circular pipeline with a length of 2 800 mm and a diameter of 50 mm was established to study the gaseous detonation propagation. Photodiode detectors were used to obtain the flame propagation velocity and the smoke film method to get ...
2017, 37(3): 453-458.
doi: 10.11883/1001-1455(2017)03-0453-06
Abstract:
In order to study the influence of initial conditions on methane-air mixtures explosion limits, the explosion limits of methane-air mixtures were obtained experimentally at different initial temperatures up to 200 ℃ and initial pressures up to 1.0 MP...
In order to study the influence of initial conditions on methane-air mixtures explosion limits, the explosion limits of methane-air mixtures were obtained experimentally at different initial temperatures up to 200 ℃ and initial pressures up to 1.0 MP...
2017, 37(3): 459-463.
doi: 10.11883/1001-1455(2017)03-0459-05
Abstract:
The γ→α phase transition of 99.8% purity cerium was investigated using the passive confined split Hopkinson pressure bar experiment under a hydrostatic pressure up to 1.7GPa and at room temperature, the relationship of the hydrostatic pressure with t...
The γ→α phase transition of 99.8% purity cerium was investigated using the passive confined split Hopkinson pressure bar experiment under a hydrostatic pressure up to 1.7GPa and at room temperature, the relationship of the hydrostatic pressure with t...
2017, 37(3): 464-470.
doi: 10.11883/1001-1455(2017)03-0464-07
Abstract:
The dynamic anti-plane behavior of the radial inhomogeneous piezoelectric medium with a circular cavity under the SH-wave was investigated using the complex function theory. It was assumed that the density of the piezoelectric medium varied as a powe...
The dynamic anti-plane behavior of the radial inhomogeneous piezoelectric medium with a circular cavity under the SH-wave was investigated using the complex function theory. It was assumed that the density of the piezoelectric medium varied as a powe...
2017, 37(3): 471-478.
doi: 10.11883/1001-1455(2017)03-0471-08
Abstract:
Research on the longitudinal impact compression of an aluminum alloy ring found that an obvious stress-drop process will appear in the macro plastic hardening stage of the specimen under certain conditions. In order to reveal the mechanism of this st...
Research on the longitudinal impact compression of an aluminum alloy ring found that an obvious stress-drop process will appear in the macro plastic hardening stage of the specimen under certain conditions. In order to reveal the mechanism of this st...
2017, 37(3): 479-486.
doi: 10.11883/1001-1455(2017)03-0479-08
Abstract:
Added into the drilling fluid in a volume portion of 1% to 3%, particles are capable of striking the rock with a high velocity after erupting from the bit nozzle and breaking the rock by particle impact combined with the mechanical action of the bit ...
Added into the drilling fluid in a volume portion of 1% to 3%, particles are capable of striking the rock with a high velocity after erupting from the bit nozzle and breaking the rock by particle impact combined with the mechanical action of the bit ...
2017, 37(3): 487-495.
doi: 10.11883/1001-1455(2017)03-0487-09
Abstract:
Intensive shock loading can lead to obvious stress concentration at the corner of a doorframe and jeopardize the safety of a doorframe wall and even the whole protective structure where it is installed. To solve this problem, we proposed to install a...
Intensive shock loading can lead to obvious stress concentration at the corner of a doorframe and jeopardize the safety of a doorframe wall and even the whole protective structure where it is installed. To solve this problem, we proposed to install a...
2017, 37(3): 496-501.
doi: 10.11883/1001-1455(2017)03-0496-06
Abstract:
A 20-liter nearly-spherical container was employed to examine the influence of initial ignition energy, ignition delay time and zirconium dust concentration on the characteristics of zirconium dust cloud explosion. The experimental results indicate t...
A 20-liter nearly-spherical container was employed to examine the influence of initial ignition energy, ignition delay time and zirconium dust concentration on the characteristics of zirconium dust cloud explosion. The experimental results indicate t...
2017, 37(3): 502-509.
doi: 10.11883/1001-1455(2017)03-0502-08
Abstract:
In view of the underground powerhouse excavation work by blasting at the Baihetan Hydropower Station Project, in order to reduce the blasting-involved damage to the rock mass, numerical simulation and field test were carried out to analyze the influe...
In view of the underground powerhouse excavation work by blasting at the Baihetan Hydropower Station Project, in order to reduce the blasting-involved damage to the rock mass, numerical simulation and field test were carried out to analyze the influe...
2017, 37(3): 510-519.
doi: 10.11883/1001-1455(2017)03-0510-10
Abstract:
To study the mechanism behind the penetration resistance capability of the ceramic/fluid cabin composite structure, numerical simulation was carried out using LS-DYNA to represent the structure's failure process and modes under the impact of the proj...
To study the mechanism behind the penetration resistance capability of the ceramic/fluid cabin composite structure, numerical simulation was carried out using LS-DYNA to represent the structure's failure process and modes under the impact of the proj...
2017, 37(3): 520-527.
doi: 10.11883/1001-1455(2017)03-0520-08
Abstract:
The behavior of one-dimensional elastic waves at a unilateral frictional contact piezoelectric material interface was studied theoretically in this thesis. When the incident wave is strong enough, the contact interface will separate or slip in local ...
The behavior of one-dimensional elastic waves at a unilateral frictional contact piezoelectric material interface was studied theoretically in this thesis. When the incident wave is strong enough, the contact interface will separate or slip in local ...
2017, 37(3): 528-535.
doi: 10.11883/1001-1455(2017)03-0528-08
Abstract:
In order to improve the large deformation problem within the Lagrangian domain, a CEL method with the capability of mapping Lagrangian materials to the Eulerian domain was presented. The contact problem in the Eulerian-Lagrangian overlapping region w...
In order to improve the large deformation problem within the Lagrangian domain, a CEL method with the capability of mapping Lagrangian materials to the Eulerian domain was presented. The contact problem in the Eulerian-Lagrangian overlapping region w...
Experimental study and numerical simulation of projectile obliquely penetrating into concrete target
2017, 37(3): 536-543.
doi: 10.11883/1001-1455(2017)03-0536-08
Abstract:
The ballistic characteristics of the projectile obliquely penetrating into the concrete target were investigated, with such data as the penetration depth, crater depth and diameter, deflection angle obtained via the experiments and simulation calcula...
The ballistic characteristics of the projectile obliquely penetrating into the concrete target were investigated, with such data as the penetration depth, crater depth and diameter, deflection angle obtained via the experiments and simulation calcula...
2017, 37(3): 544-548.
doi: 10.11883/1001-1455(2017)03-0544-05
Abstract:
The Mach reflection occurs when two high-detonation-velocity detonating cords are arranged symmetrically on both sides of the cartridge. After the detonation the explosive's detonation waves converge and collide along the line of symmetry, multiplyin...
The Mach reflection occurs when two high-detonation-velocity detonating cords are arranged symmetrically on both sides of the cartridge. After the detonation the explosive's detonation waves converge and collide along the line of symmetry, multiplyin...
2017, 37(3): 549-553.
doi: 10.11883/1001-1455(2017)03-0549-05
Abstract:
A radiation hydrodynamics model was established to analyse the pulse irradiation characteristic of thermal radiation in intense explosion and its dependence on explosion yield. Based on the splitting method, the temperature gradient was set as the in...
A radiation hydrodynamics model was established to analyse the pulse irradiation characteristic of thermal radiation in intense explosion and its dependence on explosion yield. Based on the splitting method, the temperature gradient was set as the in...
2017, 37(3): 554-559.
doi: 10.11883/1001-1455(2017)03-0554-06
Abstract:
A failure criterion considering multiaxial stress state was proposed based on the thin plate damage testing. According to the evaluation of the stress state variation and damage level of the cracking and non-cracking areas, the following conclusions ...
A failure criterion considering multiaxial stress state was proposed based on the thin plate damage testing. According to the evaluation of the stress state variation and damage level of the cracking and non-cracking areas, the following conclusions ...
2017, 37(3): 560-565.
doi: 10.11883/1001-1455(2017)03-0560-06
Abstract:
An explosive diode was designed according to the principle of explosive logic components. This paper studied thorough experiment of the internal structure of the components to identify the length of extinction channel and flame-proof structure as key...
An explosive diode was designed according to the principle of explosive logic components. This paper studied thorough experiment of the internal structure of the components to identify the length of extinction channel and flame-proof structure as key...
2017, 37(3): 566-570.
doi: 10.11883/1001-1455(2017)03-0566-05
Abstract:
To assess the coal dust explosive power, we used the dimensional analysis mathematical method to model the prediction of the energyreleased from coal dust explosion. The basic dimensions selected are those of the distance, the mass and the time, of c...
To assess the coal dust explosive power, we used the dimensional analysis mathematical method to model the prediction of the energyreleased from coal dust explosion. The basic dimensions selected are those of the distance, the mass and the time, of c...
2017, 37(3): 571-576.
doi: 10.11883/1001-1455(2017)03-0571-06
Abstract:
The artillery chamber pressure is so important a parameter for interior ballistic performance that it has to be measured repeatedly in the course of artillery development, production, acceptance, storage check. When a batch of ammunitions are measure...
The artillery chamber pressure is so important a parameter for interior ballistic performance that it has to be measured repeatedly in the course of artillery development, production, acceptance, storage check. When a batch of ammunitions are measure...
