2009 Vol. 29, No. 6
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2009, 29(6): 561-565.
doi: 10.11883/1001-1455(2009)06-0561-05
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Abstract:
The expanding gap-ring test was put forward and designed for studying the evolvement of damage in material under impact tensile. The impact tensile process of an expanding gap ring was studied by numerical simulation. The length of loading time for d...
The expanding gap-ring test was put forward and designed for studying the evolvement of damage in material under impact tensile. The impact tensile process of an expanding gap ring was studied by numerical simulation. The length of loading time for d...
2009, 29(6): 566-572.
doi: 10.11883/1001-1455(2009)06-0566-07
Abstract:
Based on the blasting construction of diaphragm wall in Puxi guiding section of East Fuxing Road crossing-river tunnel, the vibration monitoring project on the existing tunnel influenced by explosion construction was put forward, which included measu...
Based on the blasting construction of diaphragm wall in Puxi guiding section of East Fuxing Road crossing-river tunnel, the vibration monitoring project on the existing tunnel influenced by explosion construction was put forward, which included measu...
2009, 29(6): 573-578.
doi: 10.11883/1001-1455(2009)06-0573-06
Abstract:
The dynamic compression stress-strain relations of iron specimens with three sizes were obtained with a split Hopkinson pressure bar apparatus. Based on these experimental results, an empirical model was presented to quantitatively describe the influ...
The dynamic compression stress-strain relations of iron specimens with three sizes were obtained with a split Hopkinson pressure bar apparatus. Based on these experimental results, an empirical model was presented to quantitatively describe the influ...
2009, 29(6): 579-583.
doi: 10.11883/1001-1455(2009)06-0579-05
Abstract:
The SHPB compression and the reversed Taylor tests were accomplished for JOB-9003 to explore its dynamic properties under impact load and to provide the experiment data for its constitutive model. The stress-strain curves of JOB-9003 obtained in the ...
The SHPB compression and the reversed Taylor tests were accomplished for JOB-9003 to explore its dynamic properties under impact load and to provide the experiment data for its constitutive model. The stress-strain curves of JOB-9003 obtained in the ...
2009, 29(6): 584-589.
doi: 10.11883/1001-1455(2009)06-0584-06
Abstract:
According to the dimensionless depth-of-penetration formula for different targets penetrated by rigid projectiles, the present paper theoretically analyses the resistive force which the target exerts on the projectile during penetration. In particula...
According to the dimensionless depth-of-penetration formula for different targets penetrated by rigid projectiles, the present paper theoretically analyses the resistive force which the target exerts on the projectile during penetration. In particula...
2009, 29(6): 590-595.
doi: 10.11883/1001-1455(2009)06-0590-06
Abstract:
Traditional single core sandwich structures consist of two face sheets and one core. With an additional sheet, called internal sheet in this paper, inserted into the core, a two-core sandwich structure was then formed. Two-core sandwich structures wi...
Traditional single core sandwich structures consist of two face sheets and one core. With an additional sheet, called internal sheet in this paper, inserted into the core, a two-core sandwich structure was then formed. Two-core sandwich structures wi...
2009, 29(6): 596-600.
doi: 10.11883/1001-1455(2009)06-0596-05
Abstract:
Based on Motts statistical theory and Gradys energy balance theory, The Crack Opening Displacement model (COD model ), was used to describe the brittle fragmentation characteristic of TU1 ring. The formula of fragment size and number were derived fro...
Based on Motts statistical theory and Gradys energy balance theory, The Crack Opening Displacement model (COD model ), was used to describe the brittle fragmentation characteristic of TU1 ring. The formula of fragment size and number were derived fro...
2009, 29(6): 601-606.
doi: 10.11883/1001-1455(2009)06-0601-06
Abstract:
The discontinuity instability and wave front evolution of a cylindrical convergent shock wave propagating in gas were simulated by the CE/SE scheme. The evolution of the interface between the high-pressure driving gas and the low-pressure driven gas ...
The discontinuity instability and wave front evolution of a cylindrical convergent shock wave propagating in gas were simulated by the CE/SE scheme. The evolution of the interface between the high-pressure driving gas and the low-pressure driven gas ...
2009, 29(6): 607-612.
doi: 10.11883/1001-1455(2009)06-0607-06
Abstract:
Numerical fracture induced by neighbor particles moving out of the influencing domain of the kernel function may occur in the numerical simulation of hypervelocity impact problems by the standard SPH method. A new adaptive SPH method by adding and me...
Numerical fracture induced by neighbor particles moving out of the influencing domain of the kernel function may occur in the numerical simulation of hypervelocity impact problems by the standard SPH method. A new adaptive SPH method by adding and me...
2009, 29(6): 613-616.
doi: 10.11883/1001-1455(2009)06-0613-04
Abstract:
A sensitivity parameter design method for reliability of explosive initiators is presented. To meet the requirements of fire reliability and safety reliability, the reliability index is transformed to sensitivity distribution parameter and it may con...
A sensitivity parameter design method for reliability of explosive initiators is presented. To meet the requirements of fire reliability and safety reliability, the reliability index is transformed to sensitivity distribution parameter and it may con...
2009, 29(6): 617-624.
doi: 10.11883/1001-1455(2009)06-0617-08
Abstract:
The finite element code AUTODYN was used to numerically simulate the detonation processes of double layer shaped charges. The shock initiation of the inner layer charge was described by the Lee-Tarver ignition and growth model. Detonation wave propag...
The finite element code AUTODYN was used to numerically simulate the detonation processes of double layer shaped charges. The shock initiation of the inner layer charge was described by the Lee-Tarver ignition and growth model. Detonation wave propag...
2009, 29(6): 625-631.
doi: 10.11883/1001-1455(2009)06-0625-07
Abstract:
By adopting linear-focused photomultiplier tubes (PMT), an eight-channel radiation pyrometer was developed for shock temperature measurements. The dynamic linearity in each channel of the pyrometer, using the developed voltage divider circuit, exceed...
By adopting linear-focused photomultiplier tubes (PMT), an eight-channel radiation pyrometer was developed for shock temperature measurements. The dynamic linearity in each channel of the pyrometer, using the developed voltage divider circuit, exceed...
2009, 29(6): 632-636.
doi: 10.11883/1001-1455(2009)06-0632-05
Abstract:
The model was simulated by photo-elastic experiments according to the Lamb model, which included the propagation, interaction laws and interception effects of slot obstacle. The experimental results accord with the kinetics mostly: (1) There are P, S...
The model was simulated by photo-elastic experiments according to the Lamb model, which included the propagation, interaction laws and interception effects of slot obstacle. The experimental results accord with the kinetics mostly: (1) There are P, S...
2009, 29(6): 637-641.
doi: 10.11883/1001-1455(2009)06-0637-05
Abstract:
An experimental setup, containing the pure iron flyer and sample with the same thickness, was applied to carry out symmetric impact tests on pure iron. The free-surface velocities of the pure iron samples were obtained by VISAR. The X-ray diffraction...
An experimental setup, containing the pure iron flyer and sample with the same thickness, was applied to carry out symmetric impact tests on pure iron. The free-surface velocities of the pure iron samples were obtained by VISAR. The X-ray diffraction...
2009, 29(6): 642-647.
doi: 10.11883/1001-1455(2009)06-0642-06
Abstract:
A methodology for the numerical simulation of bird strike on a nose radome structure of an aircraft is presented. The simulation technique is based on a non-linear dynamic finite element analysis and is performed in two steps. The first step deals wi...
A methodology for the numerical simulation of bird strike on a nose radome structure of an aircraft is presented. The simulation technique is based on a non-linear dynamic finite element analysis and is performed in two steps. The first step deals wi...
2009, 29(6): 648-653.
doi: 10.11883/1001-1455(2009)06-0648-06
Abstract:
The explosion seismic source function in hard rock was numerically simulated with a one-dimensional spherical symmetric finite difference code. The following factors were calculated as the displacement and radial pressure at the elastic radius, the r...
The explosion seismic source function in hard rock was numerically simulated with a one-dimensional spherical symmetric finite difference code. The following factors were calculated as the displacement and radial pressure at the elastic radius, the r...
2009, 29(6): 654-658.
doi: 10.11883/1001-1455(2009)06-0654-05
Abstract:
Aluminum foam-filled tubes were prepared by filling open-cell aluminum foam into thin-walled aluminum alloy tubes. Quasi-static compression experiments were conducted to investigate the compressive deformation behaviors of the foam-filled tubes. Infl...
Aluminum foam-filled tubes were prepared by filling open-cell aluminum foam into thin-walled aluminum alloy tubes. Quasi-static compression experiments were conducted to investigate the compressive deformation behaviors of the foam-filled tubes. Infl...
2009, 29(6): 659-664.
doi: 10.11883/1001-1455(2009)06-0659-06
Abstract:
An apparatus for measuring explosion limit of combustible liquid vapor was designed. The explosion limits and detonation parameters, the least explosion suppressible concentration of RP-5 oil, RP-3 oil and alcohol air mixtures were measured respectiv...
An apparatus for measuring explosion limit of combustible liquid vapor was designed. The explosion limits and detonation parameters, the least explosion suppressible concentration of RP-5 oil, RP-3 oil and alcohol air mixtures were measured respectiv...
2009, 29(6): 665-668.
doi: 10.11883/1001-1455(2009)06-0665-04
Abstract:
Three kinds of ultrafine TATB with different microstructure were prepared, and 2% F2311 binder was added to make the TATB powder, and the TATB-based explosives were pressed with different densities. The influences of microstructure on the detonation-...
Three kinds of ultrafine TATB with different microstructure were prepared, and 2% F2311 binder was added to make the TATB powder, and the TATB-based explosives were pressed with different densities. The influences of microstructure on the detonation-...
2009, 29(6): 669-672.
doi: 10.11883/1001-1455(2009)06-0669-04
Abstract:
In order to improve the reliability assessment of an explosive initiator with small samples, the up-down test was studied. And a new arithmetic was put forward to transform the binary data into virtual complete samples. The simulation result shows th...
In order to improve the reliability assessment of an explosive initiator with small samples, the up-down test was studied. And a new arithmetic was put forward to transform the binary data into virtual complete samples. The simulation result shows th...
