2015 Vol. 35, No. 2
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2015, 35(2): 145-156.
doi: 10.11883/1001-1455(2015)02-0145-12
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Abstract:
Laser-induced stress waves can deliver ramp compression on solid materials with very high strain rates, and it is one of the newly-developed dynamic high-pressure methods in decades. Distinct from the conventional methods, laser ramp compression can ...
Laser-induced stress waves can deliver ramp compression on solid materials with very high strain rates, and it is one of the newly-developed dynamic high-pressure methods in decades. Distinct from the conventional methods, laser ramp compression can ...
2015, 35(2): 157-163.
doi: 10.11883/1001-1455(2015)02-0157-07
Abstract:
In this paper, the method of obtaining parameters for JWL equation of state is investigated. The importance of JWL parameters considered detonation parameters is analyzed using simulation and theoretical calculation. Isentropic adiabatic index and de...
In this paper, the method of obtaining parameters for JWL equation of state is investigated. The importance of JWL parameters considered detonation parameters is analyzed using simulation and theoretical calculation. Isentropic adiabatic index and de...
2015, 35(2): 164-170.
doi: 10.11883/1001-1455(2015)02-0164-07
Abstract:
A finite element model was established for the head car of a high-speed train and its crashing progresses with a rigid wall at different speeds, simulated by using LS-DYNA software. It is found that when a crash occurs the draft sill deforms mainly i...
A finite element model was established for the head car of a high-speed train and its crashing progresses with a rigid wall at different speeds, simulated by using LS-DYNA software. It is found that when a crash occurs the draft sill deforms mainly i...
2015, 35(2): 171-176.
doi: 10.11883/1001-1455(2015)02-0171-06
Abstract:
The experimental investigations on dynamic buckling of brass and steel cylindrical shell under axial impact were carried out using drop hammer as loading apparatus. Multiple buckling models are observed and the time histories of impact force were rec...
The experimental investigations on dynamic buckling of brass and steel cylindrical shell under axial impact were carried out using drop hammer as loading apparatus. Multiple buckling models are observed and the time histories of impact force were rec...
2015, 35(2): 177-183.
doi: 10.11883/1001-1455(2015)02-0177-07
Abstract:
With explosion pressure simulator, blast experiments were carried out to investigate the deformation and damage of concrete (RC) beams. The experimental design and parameters are described in detail. The experimental result shows the failure characte...
With explosion pressure simulator, blast experiments were carried out to investigate the deformation and damage of concrete (RC) beams. The experimental design and parameters are described in detail. The experimental result shows the failure characte...
2015, 35(2): 184-190.
doi: 10.11883/1001-1455(2015)02-0184-07
Abstract:
Explosive networks are the key components to the initiations of aimed warheads and shaped charge warheads, which become the important way for the logicalization of ammunition detonating system. For designing and evaluating the reliability of an explo...
Explosive networks are the key components to the initiations of aimed warheads and shaped charge warheads, which become the important way for the logicalization of ammunition detonating system. For designing and evaluating the reliability of an explo...
2015, 35(2): 191-196.
doi: 10.11883/1001-1455(2015)02-0191-06
Abstract:
An experimental equation of CFBG sensor for detonation velocity measurement which was based on the flatness of ASE light source and CFBG reflection spectrum, was quantitatively established for the first time. The CFBG length could be calculated by th...
An experimental equation of CFBG sensor for detonation velocity measurement which was based on the flatness of ASE light source and CFBG reflection spectrum, was quantitatively established for the first time. The CFBG length could be calculated by th...
2015, 35(2): 197-202.
doi: 10.11883/1001-1455(2015)02-0197-06
Abstract:
The concept, application back ground and generation of strong detonation were briefly introduced. The JWLT equation of state was embeded in one dimensional hydrodynamic program. The experimental model of strong detonation was simulated with the progr...
The concept, application back ground and generation of strong detonation were briefly introduced. The JWLT equation of state was embeded in one dimensional hydrodynamic program. The experimental model of strong detonation was simulated with the progr...
2015, 35(2): 203-207.
doi: 10.11883/1001-1455(2015)02-0203-05
Abstract:
With the Euler equations and a two-step chemical reaction model, a numerical investigation of the wedge-induced oblique detonation wave (ODW) at low inflow Mach number is performed in this paper. Its stabilization process and stationary structure are...
With the Euler equations and a two-step chemical reaction model, a numerical investigation of the wedge-induced oblique detonation wave (ODW) at low inflow Mach number is performed in this paper. Its stabilization process and stationary structure are...
2015, 35(2): 208-214.
doi: 10.11883/1001-1455(2015)02-0208-07
Abstract:
In order to study the influence of the spoiler on the overturning angular velocity of the ammunition in the dispensing process, the central-gas dispersing interior ballistic process was modeled and simulated by a two-dimensional, two-phase flow model...
In order to study the influence of the spoiler on the overturning angular velocity of the ammunition in the dispensing process, the central-gas dispersing interior ballistic process was modeled and simulated by a two-dimensional, two-phase flow model...
2015, 35(2): 215-221.
doi: 10.11883/1001-1455(2015)02-0215-07
Abstract:
We carried out the analysis of aircraft crashing on the concrete structures through numerical simulation and dynamic analysis using the matured software of ANSYS/LS-DYNA. The analysis uses the same contacting algorithm for four different material mod...
We carried out the analysis of aircraft crashing on the concrete structures through numerical simulation and dynamic analysis using the matured software of ANSYS/LS-DYNA. The analysis uses the same contacting algorithm for four different material mod...
2015, 35(2): 222-228.
doi: 10.11883/1001-1455(2015)02-0222-07
Abstract:
The simulation analysis of the impact test of 1/7.5 scaled aircraft model impacting the steel plated concrete walls is carried out by using finite element code of ANSYS/LSDYNA. Two models of different material (i.e. Winfrith model and CSCM model) are...
The simulation analysis of the impact test of 1/7.5 scaled aircraft model impacting the steel plated concrete walls is carried out by using finite element code of ANSYS/LSDYNA. Two models of different material (i.e. Winfrith model and CSCM model) are...
2015, 35(2): 229-235.
doi: 10.11883/1001-1455(2015)02-0229-07
Abstract:
To the case of heat transfer, the flowing process of jet flow impacting on a plate vertically is simulated by employing RNGk-ε turbulence model, which is compared with the experimental data, to verify the feasibility of the model. Based on the simula...
To the case of heat transfer, the flowing process of jet flow impacting on a plate vertically is simulated by employing RNGk-ε turbulence model, which is compared with the experimental data, to verify the feasibility of the model. Based on the simula...
2015, 35(2): 236-242.
doi: 10.11883/1001-1455(2015)02-0236-07
Abstract:
The shock environment of floating shock platform for the equipment and the response of ship board equipment under different shock environment were studied by numerical simulation and theoretical analysis. Based on the calculation model of American in...
The shock environment of floating shock platform for the equipment and the response of ship board equipment under different shock environment were studied by numerical simulation and theoretical analysis. Based on the calculation model of American in...
2015, 35(2): 243-248.
doi: 10.11883/1001-1455(2015)02-0243-06
Abstract:
Broadside defensive structure is important for naval vessels to maintain vitality. A novel broadside defensive structure with macro negative Poisson's ratio is proposed to achieve higher anti-shock and anti-blast performance by design of auxetic hone...
Broadside defensive structure is important for naval vessels to maintain vitality. A novel broadside defensive structure with macro negative Poisson's ratio is proposed to achieve higher anti-shock and anti-blast performance by design of auxetic hone...
2015, 35(2): 249-254.
doi: 10.11883/1001-1455(2015)02-0249-06
Abstract:
The paper is aimed to experimentally probe the detonation characteristics of the binary fuel hydrogen/propane-air mixture. The experiments were conducted in an obstructed cylindrical tube with a 92-mm inner diameter and a 12-m length at normal pressu...
The paper is aimed to experimentally probe the detonation characteristics of the binary fuel hydrogen/propane-air mixture. The experiments were conducted in an obstructed cylindrical tube with a 92-mm inner diameter and a 12-m length at normal pressu...
2015, 35(2): 255-260.
doi: 10.11883/1001-1455(2015)02-0255-06
Abstract:
In order to study the influence of explosive parameter on the effect of explosion hardening of the Hadifield steel, detonation velocities of two different densities of explosive were tested respectively. The variation of internal hardness, tensile st...
In order to study the influence of explosive parameter on the effect of explosion hardening of the Hadifield steel, detonation velocities of two different densities of explosive were tested respectively. The variation of internal hardness, tensile st...
Frequency domain characteristic of secondary instrument in the shock overpressure measurement system
2015, 35(2): 261-266.
doi: 10.11883/1001-1455(2015)02-0261-06
Abstract:
The frequency domain characteristics of measurement system are determined by transducer and secondary instrument, and the former one has been widely studied. It is shown that peak value, positive phase duration and impulse are affected by secondary i...
The frequency domain characteristics of measurement system are determined by transducer and secondary instrument, and the former one has been widely studied. It is shown that peak value, positive phase duration and impulse are affected by secondary i...
2015, 35(2): 267-272.
doi: 10.11883/1001-1455(2015)02-0267-06
Abstract:
In order to develop a special detonation powerplant and ensure the accuracy of the work capacity of the detonation powerplant, the interior ballistic numerical simulation, optimal design and corresponding experimental verification technology of deton...
In order to develop a special detonation powerplant and ensure the accuracy of the work capacity of the detonation powerplant, the interior ballistic numerical simulation, optimal design and corresponding experimental verification technology of deton...
2015, 35(2): 273-277.
doi: 10.11883/1001-1455(2015)02-0273-05
Abstract:
Analysis on shock and vibration of nuclear explosion in limestone is difficult due to the forbidden law of nuclear test. Based on the blasting similarity law, simulation of shock and vibration of nuclear explosion in limestone based on chemical explo...
Analysis on shock and vibration of nuclear explosion in limestone is difficult due to the forbidden law of nuclear test. Based on the blasting similarity law, simulation of shock and vibration of nuclear explosion in limestone based on chemical explo...
2015, 35(2): 278-284.
doi: 10.11883/1001-1455(2015)02-0278-07
Abstract:
On the basis of the peak velocity decay law of blasting and the assumption of unstable rock dominant fissure, and using Euler equations to work out the load of peak value blasting which acts on unstable rocks, and correcting peak force, it figured ou...
On the basis of the peak velocity decay law of blasting and the assumption of unstable rock dominant fissure, and using Euler equations to work out the load of peak value blasting which acts on unstable rocks, and correcting peak force, it figured ou...
2015, 35(2): 285-288.
doi: 10.11883/1001-1455-(2015)02-0285-04
Abstract:
Detonators based on laser-driven flyers are less vulnerable to the strong electromagnetic interference and can use insensitive secondary explosives as initial explosives. Additionally, this technology has advantages in terms of improved flexibility a...
Detonators based on laser-driven flyers are less vulnerable to the strong electromagnetic interference and can use insensitive secondary explosives as initial explosives. Additionally, this technology has advantages in terms of improved flexibility a...
