2008 Vol. 28, No. 5
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2008, 28(5): 385-390.
doi: 10.11883/1001-1455(2008)05-0385-06
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Abstract:
The techniques of the high-speed schlieren photography, etc. were used to investigate the characteristics of the premixed methane-air flames with different equivalence ratios propagating through a closed tube. Based on the experimental results, the c...
The techniques of the high-speed schlieren photography, etc. were used to investigate the characteristics of the premixed methane-air flames with different equivalence ratios propagating through a closed tube. Based on the experimental results, the c...
2008, 28(5): 391-400.
doi: 10.11883/1001-1455(2008)05-0391-10
Abstract:
The flow field during the motion of an underwater explosion bubble is supposed as an inviscid, irrotational and incompressible ideal fluid to simulate the bubble motion in a free field using the boundary element method. An computational program is de...
The flow field during the motion of an underwater explosion bubble is supposed as an inviscid, irrotational and incompressible ideal fluid to simulate the bubble motion in a free field using the boundary element method. An computational program is de...
2008, 28(5): 401-406.
doi: 10.11883/1001-1455(2008)05-0401-06
Abstract:
Algorithms for the flow field of detonation products behind 2D curved detonation waves are given. Detonation propagation is described by detonation shock dynamics, and detonation front positions are computed by the LS methods. Detonation propagation ...
Algorithms for the flow field of detonation products behind 2D curved detonation waves are given. Detonation propagation is described by detonation shock dynamics, and detonation front positions are computed by the LS methods. Detonation propagation ...
2008, 28(5): 407-414.
doi: 10.11883/1001-1455(2008)05-0407-08
Abstract:
The high-amplitude single-mode Richtmyer-Meshkov instability is simulated by using the high-resolution ghost-fluid method. The initial conditions and computational domain are modeled after the single-mode, 1.15-Mach， shock tube experiment by Jourdan ...
The high-amplitude single-mode Richtmyer-Meshkov instability is simulated by using the high-resolution ghost-fluid method. The initial conditions and computational domain are modeled after the single-mode, 1.15-Mach， shock tube experiment by Jourdan ...
2008, 28(5): 415-420.
doi: 10.11883/1001-1455(2008)05-0415-06
Abstract:
The method and technology, which can be used to make three-dimensional numerical simulations on the whole process of a long-rod projectile penetrating and exploding in a thick concrete target, are investigated. The related method and key techniques f...
The method and technology, which can be used to make three-dimensional numerical simulations on the whole process of a long-rod projectile penetrating and exploding in a thick concrete target, are investigated. The related method and key techniques f...
2008, 28(5): 421-426.
doi: 10.11883/1001-1455(2008)05-0421-06
Abstract:
The layer-directional compressive mechanical properties of 2-demensional carbon-fiber-reinforced silicon carbide ceramic matrix composites (2D-C/SiC CMCs) were investigated at the strain rates of 10-4~ 2.8 103 s-1. The static experiments were done by...
The layer-directional compressive mechanical properties of 2-demensional carbon-fiber-reinforced silicon carbide ceramic matrix composites (2D-C/SiC CMCs) were investigated at the strain rates of 10-4~ 2.8 103 s-1. The static experiments were done by...
2008, 28(5): 427-432.
doi: 10.11883/1001-1455(2008)05-0427-06
Abstract:
In order to high-accurately measure air shock wave, a theoretical frequency response property calculation of the measuring system was presented with sound-vibration coupling analysis. Dynamic response experiments of the measuring system were carried ...
In order to high-accurately measure air shock wave, a theoretical frequency response property calculation of the measuring system was presented with sound-vibration coupling analysis. Dynamic response experiments of the measuring system were carried ...
2008, 28(5): 433-437.
doi: 10.11883/1001-1455(2008)05-0433-05
Abstract:
The rapid dispersal process and phenomena of high explosive, aluminized explosive and thermobaric explosive were investigated experimentally by using a high-speed framing camera. By comparing the characteristics of the dispersal process and afterburn...
The rapid dispersal process and phenomena of high explosive, aluminized explosive and thermobaric explosive were investigated experimentally by using a high-speed framing camera. By comparing the characteristics of the dispersal process and afterburn...
2008, 28(5): 438-442.
doi: 10.11883/1001-1455(2008)05-0438-05
Abstract:
The level set method based on adaptive Cartesian grids is used to simulate multi-material flow problems. An quadtree-based algorithm is applied to generate adaptive Cartesian grids. The Euler equations are solved by the finite volume method and the f...
The level set method based on adaptive Cartesian grids is used to simulate multi-material flow problems. An quadtree-based algorithm is applied to generate adaptive Cartesian grids. The Euler equations are solved by the finite volume method and the f...
2008, 28(5): 443-447.
doi: 10.11883/1001-1455(2008)05-0443-05
Abstract:
Based on the nucleation-and-growth model of microvoids and the phenomenological assumption, a microvoid damage evolution equation was acquired. The material constitutive relation considering the effects of damage and temperature softening was develop...
Based on the nucleation-and-growth model of microvoids and the phenomenological assumption, a microvoid damage evolution equation was acquired. The material constitutive relation considering the effects of damage and temperature softening was develop...
2008, 28(5): 448-454.
doi: 10.11883/1001-1455(2008)05-0448-07
Abstract:
Stress uniformity along the axial direction in specimens of split Hopkinson pressure bar (SHPB) tests was investigated. By theory of one-dimensional elastic stress wave, the temporal and spatial distribution of stress in specimen induced by incident ...
Stress uniformity along the axial direction in specimens of split Hopkinson pressure bar (SHPB) tests was investigated. By theory of one-dimensional elastic stress wave, the temporal and spatial distribution of stress in specimen induced by incident ...
2008, 28(5): 455-461.
doi: 10.11883/1001-1455(2008)05-0455-07
Abstract:
This paper presents a newly-designed loading truncated cone, its associated two gland bushes, and an analytical formula for testing dynamic fracture toughness of anthracite. The impact fracture tests were carried out by using the SHPB and the newly-d...
This paper presents a newly-designed loading truncated cone, its associated two gland bushes, and an analytical formula for testing dynamic fracture toughness of anthracite. The impact fracture tests were carried out by using the SHPB and the newly-d...
2008, 28(5): 462-466.
doi: 10.11883/1001-1455(2008)05-0462-05
Abstract:
Three pure aluminum specimens with different grain sizes were obtained by the controlled heat treatment process. The stress-strain curves of the three pure aluminum specimens at 102~104 s-1 were obtained by using the split Hopkinson pressure bar tec...
Three pure aluminum specimens with different grain sizes were obtained by the controlled heat treatment process. The stress-strain curves of the three pure aluminum specimens at 102~104 s-1 were obtained by using the split Hopkinson pressure bar tec...
2008, 28(5): 467-470.
doi: 10.11883/1001-1455(2008)05-0467-04
Abstract:
Different additives were added to ANFO to enhance its detonator initiation sensitivity and work capacity. Based on the principle of the plate trace test, the test device and method were proposed to compare detonator initiation sensitivity and work ca...
Different additives were added to ANFO to enhance its detonator initiation sensitivity and work capacity. Based on the principle of the plate trace test, the test device and method were proposed to compare detonator initiation sensitivity and work ca...
2008, 28(5): 471-475.
doi: 10.11883/1001-1455(2008)05-0471-05
Abstract:
The infrared thermography method was used to investigate the detonation temperature of thermobaric explosives (TBE). The experimental result shows that the temperature of TBEs detonation cloud is higher than that of TNT with the same weight. The dura...
The infrared thermography method was used to investigate the detonation temperature of thermobaric explosives (TBE). The experimental result shows that the temperature of TBEs detonation cloud is higher than that of TNT with the same weight. The dura...
2008, 28(5): 476-480.
doi: 10.11883/1001-1455(2008)05-0476-05
Abstract:
Three layered defense models were designed based on the multiplayer defense structure of a warship. Contact explosion experiments with three different masses of explosive were carried out three times in the centers of the outside plates. The defense ...
Three layered defense models were designed based on the multiplayer defense structure of a warship. Contact explosion experiments with three different masses of explosive were carried out three times in the centers of the outside plates. The defense ...
