2007 Vol. 27, No. 2
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2007, 27(2): 97-102.
doi: 10.11883/1001-1455(2007)02-0097-06
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Abstract:
The deformation characteristics of copper tube with guard ring under two head-on collision detonation waves were experimentally researched. High-speed frame photography, pulsed X-ray radiography and VISAR interferometer were employed to record the ex...
The deformation characteristics of copper tube with guard ring under two head-on collision detonation waves were experimentally researched. High-speed frame photography, pulsed X-ray radiography and VISAR interferometer were employed to record the ex...
2007, 27(2): 103-108.
doi: 10.11883/1001-1455(2007)02-0103-06
Abstract:
Light gas gun plate impact experiments were conducted on a FeMnNi alloy and phase transition and spallation occurred. Transition pressure of this alloy obtained in the experiments (6.3~6.9 GPa) is much lower than that of pure iron (13 GPa), which dem...
Light gas gun plate impact experiments were conducted on a FeMnNi alloy and phase transition and spallation occurred. Transition pressure of this alloy obtained in the experiments (6.3~6.9 GPa) is much lower than that of pure iron (13 GPa), which dem...
2007, 27(2): 109-115.
doi: 10.11883/1001-1455(2007)02-0109-07
Abstract:
Molecular dynamics (MD) method was used to simulate the structure and properties of HMX-based four components composite material, the other components were TATB, F2311(binder) and paraffin (desensitized agent). Similarly, MD was used to simulate 3 HM...
Molecular dynamics (MD) method was used to simulate the structure and properties of HMX-based four components composite material, the other components were TATB, F2311(binder) and paraffin (desensitized agent). Similarly, MD was used to simulate 3 HM...
2007, 27(2): 116-120.
doi: 10.11883/1001-1455(2007)02-0116-05
Abstract:
The nonlinear dynamic buckling for laminated composite shallow spherical shells, which include transverse shear deformation, under the action of explosive impact was investigated. By means of the basic equations of nonlinear buckling for laminated co...
The nonlinear dynamic buckling for laminated composite shallow spherical shells, which include transverse shear deformation, under the action of explosive impact was investigated. By means of the basic equations of nonlinear buckling for laminated co...
2007, 27(2): 121-125.
doi: 10.11883/1001-1455(2007)02-0121-05
Abstract:
Dynamic compressive tests on cubic specimens were carried out on the servo-hydraulic static-dynamic testing machine designed and manufactured at the Dalian University of Technology, China. The confining pressure was kept constant at four levels and t...
Dynamic compressive tests on cubic specimens were carried out on the servo-hydraulic static-dynamic testing machine designed and manufactured at the Dalian University of Technology, China. The confining pressure was kept constant at four levels and t...
2007, 27(2): 126-130.
doi: 10.11883/1001-1455(2007)02-0126-05
Abstract:
By use of explicit dynamics finite element method, the elastic-plastic dynamic postbuckling of bars subjected to axial high-velocity impact was studied. In order to initiate the buckling mode, the bar was given a small initial imperfection in the for...
By use of explicit dynamics finite element method, the elastic-plastic dynamic postbuckling of bars subjected to axial high-velocity impact was studied. In order to initiate the buckling mode, the bar was given a small initial imperfection in the for...
2007, 27(2): 131-135.
doi: 10.11883/1001-1455(2007)02-0131-05
Abstract:
In the FEM analysis of structure response under dynamic loading such as high velocity impact, the failure parameter is a important aspect of material behavior. With split Hopkinson tension bar tests and static material test at various stress states a...
In the FEM analysis of structure response under dynamic loading such as high velocity impact, the failure parameter is a important aspect of material behavior. With split Hopkinson tension bar tests and static material test at various stress states a...
2007, 27(2): 136-142.
doi: 10.11883/1001-1455(2007)02-0136-07
Abstract:
By means of finite element method the blast wave stress propagation and stress distribution in the wall rocks damaged by initial tunneling excavation were numerically analyzed. The damage evolution of rocks subjected to the wave stress was evaluated ...
By means of finite element method the blast wave stress propagation and stress distribution in the wall rocks damaged by initial tunneling excavation were numerically analyzed. The damage evolution of rocks subjected to the wave stress was evaluated ...
2007, 27(2): 143-150.
doi: 10.11883/1001-1455(2007)02-0143-08
Abstract:
Acceleration of the shock generated by normal reflection of gaseous detonation wave was experimentally, numerically and theoretically investigated. The pizeo-electric transducers were employed to obtain the pressure history at the specific port. Base...
Acceleration of the shock generated by normal reflection of gaseous detonation wave was experimentally, numerically and theoretically investigated. The pizeo-electric transducers were employed to obtain the pressure history at the specific port. Base...
2007, 27(2): 151-158.
doi: 10.11883/1001-1455(2007)02-0151-08
Abstract:
The failure mode of ship structure attacked by typical semi-armour-piercing missile in target practice experiment was analyzed. The characters of internal explosion load and the failure mode of gross panel of the cabin were studied by numerical simul...
The failure mode of ship structure attacked by typical semi-armour-piercing missile in target practice experiment was analyzed. The characters of internal explosion load and the failure mode of gross panel of the cabin were studied by numerical simul...
2007, 27(2): 159-164.
doi: 10.11883/1001-1455(2007)02-0159-06
Abstract:
Using the dynamic caustic-test system, the PMMA model transmission-type experiment of dynamic caustics was carried out to simulate the blasting process of rock with joints. Varieties of dynamic intensity factors in the crack-tip field, extensions of ...
Using the dynamic caustic-test system, the PMMA model transmission-type experiment of dynamic caustics was carried out to simulate the blasting process of rock with joints. Varieties of dynamic intensity factors in the crack-tip field, extensions of ...
2007, 27(2): 165-170.
doi: 10.11883/1001-1455(2007)02-0165-06
Abstract:
A general Godunov finite difference schemes-WENO schemes which had fifth-order accuracy was used to make a numerical calculation for 2-dimensional axis symmetrical laser-supported plasma flow field under laser ablated solid target and laser ablated p...
A general Godunov finite difference schemes-WENO schemes which had fifth-order accuracy was used to make a numerical calculation for 2-dimensional axis symmetrical laser-supported plasma flow field under laser ablated solid target and laser ablated p...
2007, 27(2): 171-178.
doi: 10.11883/1001-1455(2007)02-0171-08
Abstract:
The scattering of a semi-cylindrical canyon and a crack with incident SH waves was studied based on Greens function. A special Greens function which was a fundamental solution of displacement field for a half-elastic space with a semi-cylindrical can...
The scattering of a semi-cylindrical canyon and a crack with incident SH waves was studied based on Greens function. A special Greens function which was a fundamental solution of displacement field for a half-elastic space with a semi-cylindrical can...
2007, 27(2): 179-184.
doi: 10.11883/1001-1455(2007)02-0179-06
Abstract:
The process of shock acted on a vibration and shock isolation system with double-stiffness was divided into two steps. In the shock action phase of a half sine wave, the response was calculated by using a double DOF model. In the free vibration phase...
The process of shock acted on a vibration and shock isolation system with double-stiffness was divided into two steps. In the shock action phase of a half sine wave, the response was calculated by using a double DOF model. In the free vibration phase...
2007, 27(2): 185-189.
doi: 10.11883/1001-1455(2007)02-0185-05
Abstract:
Dynamic compression tests of W-Ni-Mn alloy were performed, using cylindrical specimens 5 mm both in diameter and long with the split Hopkinson pressure bar (SHPB) technique. Both sections and fracture surfaces of specimens were observed with SEM. Con...
Dynamic compression tests of W-Ni-Mn alloy were performed, using cylindrical specimens 5 mm both in diameter and long with the split Hopkinson pressure bar (SHPB) technique. Both sections and fracture surfaces of specimens were observed with SEM. Con...
2007, 27(2): 190-192.
doi: 10.11883/1001-1455(2007)02-0190-03
Abstract:
The impact switch is a kind of inertial device that can sense impact acceleration and output on-off signal. A micro-mechanical impact switch is designed and fabricated with MEMS technology. The sensitive unit of the micro impact switch consists of a ...
The impact switch is a kind of inertial device that can sense impact acceleration and output on-off signal. A micro-mechanical impact switch is designed and fabricated with MEMS technology. The sensitive unit of the micro impact switch consists of a ...
