2015 Vol. 35, No. 6
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2015, 35(6): 769-776.
doi: 10.11883/1001-1455(2015)06-0769-08
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Abstract:
To investigate dynamic mechanical performances of YB-2 aeronautical polymer used as the aircraft windshield in extreme mechanical environments, we performed uniaxial compression tests on cylindrical samples, using an Instron servo hydraulic axial tes...
To investigate dynamic mechanical performances of YB-2 aeronautical polymer used as the aircraft windshield in extreme mechanical environments, we performed uniaxial compression tests on cylindrical samples, using an Instron servo hydraulic axial tes...
2015, 35(6): 777-784.
doi: 10.11883/1001-1455(2015)06-0777-08
Abstract:
By focusing our concern on the effect of chemical reactions with detonation products, we have done research on the calculation of the quasi-static temperature of confined explosion. On the basis of the energy conservation, considering the chemical ki...
By focusing our concern on the effect of chemical reactions with detonation products, we have done research on the calculation of the quasi-static temperature of confined explosion. On the basis of the energy conservation, considering the chemical ki...
2015, 35(6): 785-791.
doi: 10.11883/1001-1455(2015)06-0785-07
Abstract:
Based on the theory of relaxation approximation, the nonlinear governing equations of detonation in condensed explosives are transformed into linear relaxation systems, which can easily adopt simple and effective high resolution scheme. A fifth-order...
Based on the theory of relaxation approximation, the nonlinear governing equations of detonation in condensed explosives are transformed into linear relaxation systems, which can easily adopt simple and effective high resolution scheme. A fifth-order...
2015, 35(6): 792-798.
doi: 10.11883/1001-1455(2015)06-0792-07
Abstract:
In order to carry out the complex loading research with the strain rates varying from 105 s-1 to 106 s-1 on the light gas gun, we numerically simulated the complex loading on the steel target by the graded ensity impactor (GDI) of Al-Cu-W system usin...
In order to carry out the complex loading research with the strain rates varying from 105 s-1 to 106 s-1 on the light gas gun, we numerically simulated the complex loading on the steel target by the graded ensity impactor (GDI) of Al-Cu-W system usin...
2015, 35(6): 799-806.
doi: 10.11883/1001-1455(2015)06-0799-08
Abstract:
To find out the effect of the velocity pulse of near-fault ground motions on the structural shock resistance, we simulated the seismic responses using three dimensional finite element model for high temperature gas-cooled reactor nuclear power plant,...
To find out the effect of the velocity pulse of near-fault ground motions on the structural shock resistance, we simulated the seismic responses using three dimensional finite element model for high temperature gas-cooled reactor nuclear power plant,...
2015, 35(6): 807-811.
doi: 10.11883/1001-1455(2015)06-0807-05
Abstract:
A hot-spot ignition model based on friction generated heat on microcrack face was established. In this model, the heat conduction equation including chemical reaction and friction was solved by implicit finite element method. Furthermore, the latent ...
A hot-spot ignition model based on friction generated heat on microcrack face was established. In this model, the heat conduction equation including chemical reaction and friction was solved by implicit finite element method. Furthermore, the latent ...
2015, 35(6): 812-819.
doi: 10.11883/1001-1455(2015)06-0812-08
Abstract:
To improve the steel target penetrating capability of the rod-like jet, we designed an eccentric semispherical liner. The liner's collapsing velocity was deduced by detonation wave collision theory, and the rod-like jet formation model was establishe...
To improve the steel target penetrating capability of the rod-like jet, we designed an eccentric semispherical liner. The liner's collapsing velocity was deduced by detonation wave collision theory, and the rod-like jet formation model was establishe...
2015, 35(6): 820-824.
doi: 10.11883/1001-1455(2015)06-0820-05
Abstract:
In order to evaluate the protective effect and analyze the dynamic response of multi-layer steel cylinder under internal blast loading, we have conducted four experiments, with three different charge mass, ranging from 8.90 to 18.18 kg. The multi-lay...
In order to evaluate the protective effect and analyze the dynamic response of multi-layer steel cylinder under internal blast loading, we have conducted four experiments, with three different charge mass, ranging from 8.90 to 18.18 kg. The multi-lay...
2015, 35(6): 825-831.
doi: 10.11883/1001-1455(2015)06-0825-07
Abstract:
Several typical additives were selected and added to ammonium nitrate (AN), and UN gap test was conducted to study the effects of the added amount and mixing method on the anti-explosion performance of AN. Experimental results obtained indicate impro...
Several typical additives were selected and added to ammonium nitrate (AN), and UN gap test was conducted to study the effects of the added amount and mixing method on the anti-explosion performance of AN. Experimental results obtained indicate impro...
2015, 35(6): 832-838.
doi: 10.11883/1001-1455(2015)06-0832-07
Abstract:
For the study of the mechanism of shipboard equipment on floating shock platform with installation of deck simulator fixture, the numerical simulation and theoretical analysis were carried out through building the finite element model and the mechani...
For the study of the mechanism of shipboard equipment on floating shock platform with installation of deck simulator fixture, the numerical simulation and theoretical analysis were carried out through building the finite element model and the mechani...
2015, 35(6): 839-845.
doi: 10.11883/1001-1455(2015)06-0839-07
Abstract:
The phenomenon of shock wave interacting with a flame involves a series of complicated physical and chemical processes, in which the generation and evolution of vorticity play an important role in controlling flame development. To systematically anal...
The phenomenon of shock wave interacting with a flame involves a series of complicated physical and chemical processes, in which the generation and evolution of vorticity play an important role in controlling flame development. To systematically anal...
2015, 35(6): 846-851.
doi: 10.11883/1001-1455(2015)06-0846-06
Abstract:
It is generally impossible to obtain valid constitutive data of casting explosive by conventional SHPB tests, due to its low impedance and soft texture and to its inability to attain uniformity required. A modified SHPB method is therefore proposed t...
It is generally impossible to obtain valid constitutive data of casting explosive by conventional SHPB tests, due to its low impedance and soft texture and to its inability to attain uniformity required. A modified SHPB method is therefore proposed t...
2015, 35(6): 852-857.
doi: 10.11883/1001-1455(2015)06-0852-06
Abstract:
The effect of pre-stress on elastic precursor of disk-shaped LY12 aluminum samples was studied, and the radial pre-stress (or pre-strain) state was achieved by using an excessively-conjugated heat assembly device. In the experiment, the LY12 samples ...
The effect of pre-stress on elastic precursor of disk-shaped LY12 aluminum samples was studied, and the radial pre-stress (or pre-strain) state was achieved by using an excessively-conjugated heat assembly device. In the experiment, the LY12 samples ...
2015, 35(6): 858-863.
doi: 10.11883/1001-1455(2015)06-0858-06
Abstract:
In order to obtain mechanical properties of phenolic cotton fabric material at different strain rates, we performed experiments of the uniaxial compression tests of phenolic cotton fabric material at the strain rate ranging from 10-3 to 103 s-1, usin...
In order to obtain mechanical properties of phenolic cotton fabric material at different strain rates, we performed experiments of the uniaxial compression tests of phenolic cotton fabric material at the strain rate ranging from 10-3 to 103 s-1, usin...
2015, 35(6): 864-870.
doi: 10.11883/1001-1455(2015)06-0864-07
Abstract:
We carried out SHPB tests on dry and saturated concretes using split Hopkinson and they were compared with quasi-static mechanical tests. The results show that the dry and saturated concretes produce an obvious strain rate effect: the ascending part ...
We carried out SHPB tests on dry and saturated concretes using split Hopkinson and they were compared with quasi-static mechanical tests. The results show that the dry and saturated concretes produce an obvious strain rate effect: the ascending part ...
2015, 35(6): 871-875.
doi: 10.11883/1001-1455(2015)06-0871-05
Abstract:
First, the pressure transducer is calibrated using the shock tube. Second, the mathematical model of the pressure transducer is established through the system identification with Generalized Least Square Iterative Method with Special Whitening Filter...
First, the pressure transducer is calibrated using the shock tube. Second, the mathematical model of the pressure transducer is established through the system identification with Generalized Least Square Iterative Method with Special Whitening Filter...
2015, 35(6): 876-880.
doi: 10.11883/1001-1455(2015)06-0876-05
Abstract:
A novel experimental technique to study the reaction threshold of explosives is developed. The flyer is accelerated to an expected velocity to gain a low amplitude loading by the gas gun. The interface particle velocity between JOB-9003 and PMMA unde...
A novel experimental technique to study the reaction threshold of explosives is developed. The flyer is accelerated to an expected velocity to gain a low amplitude loading by the gas gun. The interface particle velocity between JOB-9003 and PMMA unde...
2015, 35(6): 881-887.
doi: 10.11883/1001-1455(2015)06-0881-07
Abstract:
New findings in the research of pulse shaping technique are widely used in dynamic compressive test. Dynamic tension, Brazilian disc test and dynamic bending fracture test are introduced in detail. Furthermore, the problems found in the application o...
New findings in the research of pulse shaping technique are widely used in dynamic compressive test. Dynamic tension, Brazilian disc test and dynamic bending fracture test are introduced in detail. Furthermore, the problems found in the application o...
2015, 35(6): 888-894.
doi: 10.11883/1001-1455(2015)06-0888-07
Abstract:
To investigate the shock resistance of multi-layered pyramidal lattice panels impacted by a ball hammer, we carried out an experiment of 4-layered pyramidal lattices under the impact of a ball hammer, analyzed the collapse deformation process and mod...
To investigate the shock resistance of multi-layered pyramidal lattice panels impacted by a ball hammer, we carried out an experiment of 4-layered pyramidal lattices under the impact of a ball hammer, analyzed the collapse deformation process and mod...
2015, 35(6): 895-900.
doi: 10.11883/1001-1455(2015)06-0895-06
Abstract:
Relying on the explosively driven setting of one-end detonator initiation and using the Doppler velocimetry and high-speed framing camera, we diagnosed the expansion and fracture process of the cylindrical shell. The results obtained from our experim...
Relying on the explosively driven setting of one-end detonator initiation and using the Doppler velocimetry and high-speed framing camera, we diagnosed the expansion and fracture process of the cylindrical shell. The results obtained from our experim...
2015, 35(6): 901-906.
doi: 10.11883/1001-1455(2015)06-0901-06
Abstract:
The methane has a high risk of gas explosion because its concentration has come into the explosion limit range in the liquefaction process of low-concentration oxygen-bed methane. This gas explosion process was simulated on a flow field platform at l...
The methane has a high risk of gas explosion because its concentration has come into the explosion limit range in the liquefaction process of low-concentration oxygen-bed methane. This gas explosion process was simulated on a flow field platform at l...
2015, 35(6): 907-912.
doi: 10.11883/1001-1455(2015)06-0907-06
Abstract:
As polyurethane foam has a good cushioning and energy absorption performance, the sandwich structure with polyurethane foam as core and the steel as the shell plate has been widely used in engineering application. In this paper, in order to study the...
As polyurethane foam has a good cushioning and energy absorption performance, the sandwich structure with polyurethane foam as core and the steel as the shell plate has been widely used in engineering application. In this paper, in order to study the...
2015, 35(6): 913-918.
doi: 10.11883/1001-1455(2015)06-0913-06
Abstract:
The micromorphological characteristics of rock failure surface by rockburst are analyzed and studied with the scanning electron microscope to explore the rockburst mechanism. The relation between rock failure surface morphology with stress and rock c...
The micromorphological characteristics of rock failure surface by rockburst are analyzed and studied with the scanning electron microscope to explore the rockburst mechanism. The relation between rock failure surface morphology with stress and rock c...
