2015 Vol. 35, No. 4
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2015, 35(4): 449-453.
doi: 10.11883/1001-1455(2015)04-0449-05
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Abstract:
In order to calculate the detonation products and parameters, Lagrange multiplier and Newton iterative method were used to predict detonation products. The state equation of BKW was used to predict detonation parameters. In a range of pressure from 0...
In order to calculate the detonation products and parameters, Lagrange multiplier and Newton iterative method were used to predict detonation products. The state equation of BKW was used to predict detonation parameters. In a range of pressure from 0...
2015, 35(4): 454-458.
doi: 10.11883/1001-1455(2015)04-0454-05
Abstract:
The surface tension of binder containing different additives and the contact angle with RDX were measured by a contact angle meter. The coating quality is evaluated according to the micro-images acquired by scanning electron microscopy (SEM), the spe...
The surface tension of binder containing different additives and the contact angle with RDX were measured by a contact angle meter. The coating quality is evaluated according to the micro-images acquired by scanning electron microscopy (SEM), the spe...
2015, 35(4): 459-466.
doi: 10.11883/1001-1455(2015)04-0459-08
Abstract:
The dynamic response of brick wall under blast shock vibration is very complex. it is difficult to establish its constitutive relation accurately. Several common finite-element methods to simulate brick wall were presented and merits and drawbacks of...
The dynamic response of brick wall under blast shock vibration is very complex. it is difficult to establish its constitutive relation accurately. Several common finite-element methods to simulate brick wall were presented and merits and drawbacks of...
2015, 35(4): 467-472.
doi: 10.11883/1001-1455(2015)04-0467-06
Abstract:
Large scale borehole soundless cracking is significantly different from traditional soundless cracking. Experiments were made to measure the expansive pressure of the soundless cracking agent (SCA) working in the boreholes of ∅40 mm and ∅100 mm. The ...
Large scale borehole soundless cracking is significantly different from traditional soundless cracking. Experiments were made to measure the expansive pressure of the soundless cracking agent (SCA) working in the boreholes of ∅40 mm and ∅100 mm. The ...
2015, 35(4): 473-481.
doi: 10.11883/1001-1455(2015)04-0473-09
Abstract:
A new type of creased square tube specifically designed with some folded lobes added at the wall of ordinary square tube is studied inorder not only to reduce the initial loading, but also to enhance the effective plastic area distortion which leads ...
A new type of creased square tube specifically designed with some folded lobes added at the wall of ordinary square tube is studied inorder not only to reduce the initial loading, but also to enhance the effective plastic area distortion which leads ...
2015, 35(4): 482-488.
doi: 10.11883/1001-1455(2015)04-0482-07
Abstract:
In order to simulate the scene of secondary explosion caused by the fuel tank of vehicle, equipment bombarded, the shelling experiments of Ø30 mm fragmentation explosive incendiary shell were conducted in the external field. The process of diesel fue...
In order to simulate the scene of secondary explosion caused by the fuel tank of vehicle, equipment bombarded, the shelling experiments of Ø30 mm fragmentation explosive incendiary shell were conducted in the external field. The process of diesel fue...
2015, 35(4): 489-495.
doi: 10.11883/1001-1455(2015)04-0489-07
Abstract:
In order to investigate the performances of corundum-rubble overlays subjected to small-diameter bomb penetration, a three-dimensional finite element model is developed. The model is used to study the projectile penetration into the corundum-rubble o...
In order to investigate the performances of corundum-rubble overlays subjected to small-diameter bomb penetration, a three-dimensional finite element model is developed. The model is used to study the projectile penetration into the corundum-rubble o...
2015, 35(4): 496-500.
doi: 10.11883/1001-1455(2015)04-0496-05
Abstract:
The mass of explosive which the aluminum/copper cylinder shells were blasted shutter was found with finite element methods. And on the basis of this, the blast shutter models were simulated many times by the smoothed particle hydrodynamics method to ...
The mass of explosive which the aluminum/copper cylinder shells were blasted shutter was found with finite element methods. And on the basis of this, the blast shutter models were simulated many times by the smoothed particle hydrodynamics method to ...
2015, 35(4): 501-506.
doi: 10.11883/1001-1455(2015)04-0501-06
Abstract:
The fixed sampling frequency is not reasonable for obtaining the signal parameters with variable changing speed during the measurement process of high-g acceleration. A digital frequency-change sampling method was put forward in this paper to reduce ...
The fixed sampling frequency is not reasonable for obtaining the signal parameters with variable changing speed during the measurement process of high-g acceleration. A digital frequency-change sampling method was put forward in this paper to reduce ...
2015, 35(4): 507-512.
doi: 10.11883/1001-1455(2015)04-0507-06
Abstract:
In order to obtain dynamic tensile mechanical properties of metal materials under intermediate strain rate with servo-hydraulic machine, an indirect measurement method without changing the original structure of the testing maching is proposed to achi...
In order to obtain dynamic tensile mechanical properties of metal materials under intermediate strain rate with servo-hydraulic machine, an indirect measurement method without changing the original structure of the testing maching is proposed to achi...
2015, 35(4): 513-519.
doi: 10.11883/1001-1455(2015)04-0513-07
Abstract:
Aluminum to oxygen Al/O ratio is very important to the performance of aluminized explosives. In order to study the influence of the ratio on the performance of explosives in concrete, three kinds of aluminized explosives are taken into account, and t...
Aluminum to oxygen Al/O ratio is very important to the performance of aluminized explosives. In order to study the influence of the ratio on the performance of explosives in concrete, three kinds of aluminized explosives are taken into account, and t...
2015, 35(4): 520-526.
doi: 10.11883/1001-1455(2015)04-0520-07
Abstract:
To obtain the characteristics of sequential underwater explosion sound signals effectively, the sequential underwater explosion sound signals have been gradually extracted by the Mallat algorithm of wavelet transform. The energy distribution of the s...
To obtain the characteristics of sequential underwater explosion sound signals effectively, the sequential underwater explosion sound signals have been gradually extracted by the Mallat algorithm of wavelet transform. The energy distribution of the s...
2015, 35(4): 527-535.
doi: 10.11883/1001-1455(2015)04-0527-09
Abstract:
Two types (single-edged and double-edged) of TC4 (Ti-6Al-4V) alloy samples are tested by using the split-Hopkinson bar system under the strain rate of 104 s-1. By using ultra-high speed photography, the initialization and propagation of adiabatic she...
Two types (single-edged and double-edged) of TC4 (Ti-6Al-4V) alloy samples are tested by using the split-Hopkinson bar system under the strain rate of 104 s-1. By using ultra-high speed photography, the initialization and propagation of adiabatic she...
2015, 35(4): 536-540.
doi: 10.11883/1001-1455(2015)04-0536-05
Abstract:
In order to resolve the current issue about the backward method of charge and low energy efficiency of explosives, a kind of explosive with the structure of honeycomb is used to ensure the quality of the charge and is applied in double sided explosiv...
In order to resolve the current issue about the backward method of charge and low energy efficiency of explosives, a kind of explosive with the structure of honeycomb is used to ensure the quality of the charge and is applied in double sided explosiv...
2015, 35(4): 541-546.
doi: 10.11883/1001-1455(2015)04-0541-06
Abstract:
Based on the design of a profiled rod, a dynamics model was proposed for the profiled rod driven by dentonation. The motion process of the profiled rod driven by dentonation was simulated by ANSYS/LS-DYNA. The model for the profiled rod after detonat...
Based on the design of a profiled rod, a dynamics model was proposed for the profiled rod driven by dentonation. The motion process of the profiled rod driven by dentonation was simulated by ANSYS/LS-DYNA. The model for the profiled rod after detonat...
2015, 35(4): 547-554.
doi: 10.11883/1001-1455(2015)04-0547-08
Abstract:
Based on the blasting excavation for the berm at the elevation of 640 m on the high slope of Xiluodu hydropower station, the blasting induced damage zone were obtained through sonic wave test and numerical simulation. The relationship between PPV and...
Based on the blasting excavation for the berm at the elevation of 640 m on the high slope of Xiluodu hydropower station, the blasting induced damage zone were obtained through sonic wave test and numerical simulation. The relationship between PPV and...
2015, 35(4): 555-560.
doi: 10.11883/1001-1455(2015)04-0555-06
Abstract:
With Baihetan columnar joints basalt as the research object, numerical model is generated according to the local distribution statistics. Based on numerical analysis, the cracking process of columnar jointed rock masses with the slope excavated by co...
With Baihetan columnar joints basalt as the research object, numerical model is generated according to the local distribution statistics. Based on numerical analysis, the cracking process of columnar jointed rock masses with the slope excavated by co...
2015, 35(4): 561-566.
doi: 10.11883/1001-1455(2015)04-0561-06
Abstract:
Based on two-step reactive Euler equations, two-dimensional simulation of cylindrical detonation (CD) is performed. The objective is to study the influence of ignition conditions and initial pressure on the formation and propagation of CD. It is foun...
Based on two-step reactive Euler equations, two-dimensional simulation of cylindrical detonation (CD) is performed. The objective is to study the influence of ignition conditions and initial pressure on the formation and propagation of CD. It is foun...
2015, 35(4): 567-575.
doi: 10.11883/1001-1455(2015)04-0567-09
Abstract:
A split Hopkinson pressure bar apparatus (SHPB) and a modified SHPB apparatus were employed to investigate the dynamic responses of aluminum foam. During the experiments, a high-speed camera was used to record the deformation process of specimens. Th...
A split Hopkinson pressure bar apparatus (SHPB) and a modified SHPB apparatus were employed to investigate the dynamic responses of aluminum foam. During the experiments, a high-speed camera was used to record the deformation process of specimens. Th...
2015, 35(4): 576-584.
doi: 10.11883/1001-1455(2015)04-0576-09
Abstract:
To improve the driving speed, by taking the tunnel blasting practice in Lushuidong coal mine as research background, the optimization of cut parameters was studied by LS-DYNA3D. Underground field experiments were combined to analyze the dynamic stres...
To improve the driving speed, by taking the tunnel blasting practice in Lushuidong coal mine as research background, the optimization of cut parameters was studied by LS-DYNA3D. Underground field experiments were combined to analyze the dynamic stres...
2015, 35(4): 585-590.
doi: 10.11883/1001-1455(2015)04-0585-06
Abstract:
Aimed to simulate the propagation of blast wave with high density ratio and high pressure ratio produced by strong explosion in the air, a two dimensional numerical program is written in which the problem is treated as a two-medium compressible flow ...
Aimed to simulate the propagation of blast wave with high density ratio and high pressure ratio produced by strong explosion in the air, a two dimensional numerical program is written in which the problem is treated as a two-medium compressible flow ...
2015, 35(4): 591-598.
doi: 10.11883/1001-1455(2015)04-0591-08
Abstract:
To study the way that the plane SH wave propagating in an elastic bi-material half space from medium Ⅰ to medium Ⅱ, the steady-state scattering of the transmitted wave by a circular cavity is analyzed by using Green function and integral equation met...
To study the way that the plane SH wave propagating in an elastic bi-material half space from medium Ⅰ to medium Ⅱ, the steady-state scattering of the transmitted wave by a circular cavity is analyzed by using Green function and integral equation met...
2015, 35(4): 599-602.
doi: 10.11883/1001-1455(2015)04-0599-04
Abstract:
A method was raised by taking out the underwater explosion test to determin the JWL state equation parameters of detonation products. The PBX-01 explosive was applied and a calculating model of underwater explosion test was established by using ANSYS...
A method was raised by taking out the underwater explosion test to determin the JWL state equation parameters of detonation products. The PBX-01 explosive was applied and a calculating model of underwater explosion test was established by using ANSYS...
2015, 35(4): 603-608.
doi: 10.11883/1001-1455(2015)04-0603-06
Abstract:
Detonation tube including driver section and test section was built to investigate the failure mechanism of detonation wave near the limits. The mixture of C2H2+2.5O2+70%Ar was investigated experimentally. Fiber optics was used to measure detonation ...
Detonation tube including driver section and test section was built to investigate the failure mechanism of detonation wave near the limits. The mixture of C2H2+2.5O2+70%Ar was investigated experimentally. Fiber optics was used to measure detonation ...
