2008 Vol. 28, No. 2
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2008, 28(2): 97-104.
doi: 10.11883/1001-1455(2008)02-0097-08
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Abstract:
An experimental investigation on the high-speed deflagration in the acetylene-oxygen mixture was carried out in a smooth straight tube. The deflagration was generated by putting a perforated plate in the way of a self-sustained detonation wave and in...
An experimental investigation on the high-speed deflagration in the acetylene-oxygen mixture was carried out in a smooth straight tube. The deflagration was generated by putting a perforated plate in the way of a self-sustained detonation wave and in...
2008, 28(2): 105-109.
doi: 10.11883/1001-1455(2008)02-0105-05
Abstract:
VG(void growth) damage model is generalized to the 2D situations, which counts in the effect of the principal stress direction on the evolution of damage, and is used in the 2D numerical simulations of spallation of steel tube driven by sliding deton...
VG(void growth) damage model is generalized to the 2D situations, which counts in the effect of the principal stress direction on the evolution of damage, and is used in the 2D numerical simulations of spallation of steel tube driven by sliding deton...
2008, 28(2): 110-115.
doi: 10.11883/1001-1455(2008)02-0110-06
Abstract:
Planar shock wave experiments for OFHC copper were carried out, and the yield stresses of OFHC copper were obtained from the longitudinal and transverse stresses recorded by the manganin gauges. Numerical simulations of the planar shock tests for OFH...
Planar shock wave experiments for OFHC copper were carried out, and the yield stresses of OFHC copper were obtained from the longitudinal and transverse stresses recorded by the manganin gauges. Numerical simulations of the planar shock tests for OFH...
2008, 28(2): 116-223.
doi: 10.11883/1001-1455(2008)02-0116-08
Abstract:
The present paper conducts a numerical study on the dynamic plastic buckling of deep penetrating projectiles. Numerical simulations display the different processes of failure and destruction of projectiles with LS-DYNA3D. It confirms that, two failur...
The present paper conducts a numerical study on the dynamic plastic buckling of deep penetrating projectiles. Numerical simulations display the different processes of failure and destruction of projectiles with LS-DYNA3D. It confirms that, two failur...
2008, 28(2): 124-130.
doi: 10.11883/1001-1455(2008)02-0124-07
Abstract:
The nonlinear dynamics of a gas bubble near the free surface and the cylinder is three-dimensionally computed. The flow field is supposed to be irrotational and incompressible at the underwater explosion impulsive phase. The high-order curved triangu...
The nonlinear dynamics of a gas bubble near the free surface and the cylinder is three-dimensionally computed. The flow field is supposed to be irrotational and incompressible at the underwater explosion impulsive phase. The high-order curved triangu...
2008, 28(2): 131-137.
doi: 10.11883/1001-1455(2008)02-0131-07
Abstract:
There is a non-equilibrium ionization zone in the detonation plasma resulted from the non-equilibrium heat release of chemical reaction. Because of the low mass ratio between electron and heavy particle in the non-equilibrium ionization zone, the tra...
There is a non-equilibrium ionization zone in the detonation plasma resulted from the non-equilibrium heat release of chemical reaction. Because of the low mass ratio between electron and heavy particle in the non-equilibrium ionization zone, the tra...
2008, 28(2): 138-143.
doi: 10.11883/1001-1455(2008)02-0138-06
Abstract:
By MEPH2Y, a two-dimensional finite difference Eulerian hydrocode, this paper simulated the action process of a shaped charge. The process includes the following: (1) the formation and propagation of the detonation wave, and its interaction with othe...
By MEPH2Y, a two-dimensional finite difference Eulerian hydrocode, this paper simulated the action process of a shaped charge. The process includes the following: (1) the formation and propagation of the detonation wave, and its interaction with othe...
2008, 28(2): 144-148.
doi: 10.11883/1001-1455(2008)02-0144-05
Abstract:
A modified ghost fluid method is developed to avoid the oscillations of pressure and velocity at the interface when the original ghost fluid method (GFM) is applied to a strong shock wave impacting on a material interface. The pressure and velocity o...
A modified ghost fluid method is developed to avoid the oscillations of pressure and velocity at the interface when the original ghost fluid method (GFM) is applied to a strong shock wave impacting on a material interface. The pressure and velocity o...
2008, 28(2): 149-153.
doi: 10.11883/1001-1455(2008)02-0149-05
Abstract:
Effects of the length-to-diameter (L/D) ratios of specimens on the experimental results were studied by using a split Hopkinson tensile bar, rotating disk indirect bar-bar tensile impact apparatus. The length-to-diameter ratios of the LY12 specimens ...
Effects of the length-to-diameter (L/D) ratios of specimens on the experimental results were studied by using a split Hopkinson tensile bar, rotating disk indirect bar-bar tensile impact apparatus. The length-to-diameter ratios of the LY12 specimens ...
2008, 28(2): 154-160.
doi: 10.11883/1001-1455(2008)02-0154-07
Abstract:
The meshless material point method (MPM) is introduced to solve the problems that when a bomb is exploded near the building, an analysis on the combining effects of blast wave and fragments on the concrete wall involves the multi-physics field calcul...
The meshless material point method (MPM) is introduced to solve the problems that when a bomb is exploded near the building, an analysis on the combining effects of blast wave and fragments on the concrete wall involves the multi-physics field calcul...
2008, 28(2): 161-165.
doi: 10.11883/1001-1455(2008)02-0161-05
Abstract:
The theory of interior ballistic course of solid traveling charge was studied to increase the initial velocity of a big caliber gun. Based on the good results in tests and numerical simulations in the 30 mm gun of traveling charge, a zero-dimensional...
The theory of interior ballistic course of solid traveling charge was studied to increase the initial velocity of a big caliber gun. Based on the good results in tests and numerical simulations in the 30 mm gun of traveling charge, a zero-dimensional...
2008, 28(2): 166-171.
doi: 10.11883/1001-1455(2008)02-0166-06
Abstract:
Considering the compressibility of an aluminum-alloy foam and the unavailability of the classic Taylor model to it, a theoretical model used to analyze the Taylor impact experiment of the aluminum-alloy foam was proposed based on some assumptions. Th...
Considering the compressibility of an aluminum-alloy foam and the unavailability of the classic Taylor model to it, a theoretical model used to analyze the Taylor impact experiment of the aluminum-alloy foam was proposed based on some assumptions. Th...
CDM model and its application to numerical simulation on fiber-reinforced laminate under penetration
2008, 28(2): 172-177.
doi: 10.11883/1001-1455(2008)02-0172-06
Abstract:
A continuum damage constitutive model for the fiber-reinforced laminate was introduced. Penetration of the fiber-reinforced laminate by a flat-ended projectile was numerically simulated by using the 3D finite element software LS-DYNA. Residual veloci...
A continuum damage constitutive model for the fiber-reinforced laminate was introduced. Penetration of the fiber-reinforced laminate by a flat-ended projectile was numerically simulated by using the 3D finite element software LS-DYNA. Residual veloci...
2008, 28(2): 178-185.
doi: 10.11883/1001-1455(2008)02-0178-08
Abstract:
Ballistic experiments with projectile velocities of 297~848 m/s were performed by using a 12.7 mm ballistic gun to investigate the anti-penetration and anti-perforation performances of the plain concrete and steel fiber-reinforced concrete (SFRC) wit...
Ballistic experiments with projectile velocities of 297~848 m/s were performed by using a 12.7 mm ballistic gun to investigate the anti-penetration and anti-perforation performances of the plain concrete and steel fiber-reinforced concrete (SFRC) wit...
2008, 28(2): 186-192.
doi: 10.11883/1001-1455(2008)02-0186-07
Abstract:
The phenomenon of the rock damage and fracture by shock wave of exploding in fractures was simulated via the experiment of exploding on the surface of the cement sample in deep water. The peak pressure decline of shock wave, which was suitable for th...
The phenomenon of the rock damage and fracture by shock wave of exploding in fractures was simulated via the experiment of exploding on the surface of the cement sample in deep water. The peak pressure decline of shock wave, which was suitable for th...
