2009 Vol. 29, No. 1
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2009, 29(1): 1-6.
doi: 10.11883/1001-1455(2009)01-0001-06
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Abstract:
Flames and inert gases past an cylinder obstacle were numerically simulated by using the immersed boundary method used in the 3D compressible viscous flow and the high-order accurate total variation diminishing (TVD) schemes based on the high-order p...
Flames and inert gases past an cylinder obstacle were numerically simulated by using the immersed boundary method used in the 3D compressible viscous flow and the high-order accurate total variation diminishing (TVD) schemes based on the high-order p...
2009, 29(1): 7-12.
doi: 10.11883/1001-1455(2009)01-0007-06
Abstract:
Materials such as steel and reinforced concrete are frequently used in blast-resistant structures. However, analytical procedures for those structures are limited to elastic or elastic-plastic small deformations. This paper aims to discuss the feasib...
Materials such as steel and reinforced concrete are frequently used in blast-resistant structures. However, analytical procedures for those structures are limited to elastic or elastic-plastic small deformations. This paper aims to discuss the feasib...
2009, 29(1): 13-17.
doi: 10.11883/1001-1455(2009)01-0013-05
Abstract:
Based on the thermal explosion theory, the security of loaded projectiles penetrating into concrete targets was investigated. By taking the hot-spot temperature (also called the critical initial explosion temperature) as the initial explosion criteri...
Based on the thermal explosion theory, the security of loaded projectiles penetrating into concrete targets was investigated. By taking the hot-spot temperature (also called the critical initial explosion temperature) as the initial explosion criteri...
2009, 29(1): 18-22.
doi: 10.11883/1001-1455(2009)01-0018-05
Abstract:
The paper characterizes the fault zone as an idealized interface with linear slip-weakening friction and investigates reflection and transmission of stress wave across two elastic half-spaces on the condition that the initial stress state of rock int...
The paper characterizes the fault zone as an idealized interface with linear slip-weakening friction and investigates reflection and transmission of stress wave across two elastic half-spaces on the condition that the initial stress state of rock int...
2009, 29(1): 23-28.
doi: 10.11883/1001-1455(2009)01-0023-06
Abstract:
The second-order manifold method was used to simulate the dynamic tension split process of a flattened rock Brazilian disc subjected to shock loading through introducing a criteria for crack initiation and crack growth. The split process caused by a ...
The second-order manifold method was used to simulate the dynamic tension split process of a flattened rock Brazilian disc subjected to shock loading through introducing a criteria for crack initiation and crack growth. The split process caused by a ...
2009, 29(1): 29-34.
doi: 10.11883/1001-1455(2009)01-0029-06
Abstract:
Ballistic tests were performed to investigate the anti-penetration properties of ultra-high molecular weight polyethylene fiber-reinforced laminated plates (UFRP) against high-speed cubic fragments. Energy absorption performances were compared among ...
Ballistic tests were performed to investigate the anti-penetration properties of ultra-high molecular weight polyethylene fiber-reinforced laminated plates (UFRP) against high-speed cubic fragments. Energy absorption performances were compared among ...
2009, 29(1): 35-40.
doi: 10.11883/1001-1455(2009)01-0035-06
Abstract:
According to the existing blasting vibration live data, the different-frequency-band energy distribution of the blasting vibration signals was attained by the wavelet analysis technology. Based on the characteristics of dynamic response from the cont...
According to the existing blasting vibration live data, the different-frequency-band energy distribution of the blasting vibration signals was attained by the wavelet analysis technology. Based on the characteristics of dynamic response from the cont...
2009, 29(1): 41-44.
doi: 10.11883/1001-1455(2009)01-0041-04
Abstract:
The nano-CeO2 powders were synthesized by detonation using the Ce(NO3)36H2O as the precursor. The detonation products were characterized by XRD and TEM.Influences of urea and NaNO2 in explosive on the morphology of detonation products were investigat...
The nano-CeO2 powders were synthesized by detonation using the Ce(NO3)36H2O as the precursor. The detonation products were characterized by XRD and TEM.Influences of urea and NaNO2 in explosive on the morphology of detonation products were investigat...
2009, 29(1): 45-48.
doi: 10.11883/1001-1455(2009)01-0045-04
Abstract:
A travelling wave acoustooptic switch based on Bragg diffraction was proposed according to the requirement for optical switches used in shock wave and detonation physics experiments. Some important parameters of this acoustooptic switch such as the s...
A travelling wave acoustooptic switch based on Bragg diffraction was proposed according to the requirement for optical switches used in shock wave and detonation physics experiments. Some important parameters of this acoustooptic switch such as the s...
2009, 29(1): 49-55.
doi: 10.11883/1001-1455(2009)01-0049-07
Abstract:
The cellular structures of closed-cell foams were modeled as tetrakaidecahedrons and their dynamic crushing behaviors were simulated by the finite element method. In the numerical simulation, all the tetrakaidecahedrons have the same sizes. Numerical...
The cellular structures of closed-cell foams were modeled as tetrakaidecahedrons and their dynamic crushing behaviors were simulated by the finite element method. In the numerical simulation, all the tetrakaidecahedrons have the same sizes. Numerical...
2009, 29(1): 56-60.
doi: 10.11883/1001-1455(2009)01-0056-05
Abstract:
Kinematic and dynamic analysis on underwater high-speed supercavitating projectiles were carried out and a mathematical model was proposed to establish coupling nonlinear differential equations. The equations were resolved to obtain the kinematical c...
Kinematic and dynamic analysis on underwater high-speed supercavitating projectiles were carried out and a mathematical model was proposed to establish coupling nonlinear differential equations. The equations were resolved to obtain the kinematical c...
2009, 29(1): 61-66.
doi: 10.11883/1001-1455(2009)01-0061-06
Abstract:
While elastic waves propagates along structures, all kinds of information can be carried, in-cluding damage information, which offers possibility for detection of damaged structures. For the sake of carrying on local control and health safety monitor...
While elastic waves propagates along structures, all kinds of information can be carried, in-cluding damage information, which offers possibility for detection of damaged structures. For the sake of carrying on local control and health safety monitor...
2009, 29(1): 67-72.
doi: 10.11883/1001-1455(2009)01-0067-06
Abstract:
The discrete wavelet threshold method was used to denoise the SHPB testing signals containing the high-frequency noise. Aimed at the short-duration and abrupt change of non-stationary SHPB testing signals, the Sym5 wavelet basis was chosen as the opt...
The discrete wavelet threshold method was used to denoise the SHPB testing signals containing the high-frequency noise. Aimed at the short-duration and abrupt change of non-stationary SHPB testing signals, the Sym5 wavelet basis was chosen as the opt...
2009, 29(1): 73-79.
doi: 10.11883/1001-1455(2009)01-0073-07
Abstract:
The scattering of SH-wave by the circular cavity near the bimaterial interface in a vertical half-space and dynamic stress concentration were explored based on the complex function method and the Greens function method. The solution of the present pr...
The scattering of SH-wave by the circular cavity near the bimaterial interface in a vertical half-space and dynamic stress concentration were explored based on the complex function method and the Greens function method. The solution of the present pr...
2009, 29(1): 80-84.
doi: 10.11883/1001-1455(2009)01-0080-05
Abstract:
A numerical analysis model for the bird-impact response of aircraft windshields was proposed by combining the dynamic explicit finite element code PAM-CRASH and the smoothed particle hydrodynamics (SPH) method. The dynamic response of an aircraft win...
A numerical analysis model for the bird-impact response of aircraft windshields was proposed by combining the dynamic explicit finite element code PAM-CRASH and the smoothed particle hydrodynamics (SPH) method. The dynamic response of an aircraft win...
2009, 29(1): 85-89.
doi: 10.11883/1001-1455(2009)01-0085-05
Abstract:
A excessively-conjugated heat assembly and a mechanical clamp device were used to achieve the radial pre-strain of disk-shaped LY12 samples. In the experiment, the LY12 samples were impacted by the flyer plates driven by a one-stage light-gas gun, an...
A excessively-conjugated heat assembly and a mechanical clamp device were used to achieve the radial pre-strain of disk-shaped LY12 samples. In the experiment, the LY12 samples were impacted by the flyer plates driven by a one-stage light-gas gun, an...
2009, 29(1): 90-94.
doi: 10.11883/1001-1455(2009)01-0090-05
Abstract:
By analyzing the performances and primary technical parameters of the APX-RS digital camera, the dynamic test was designed to shoot the aviation attitudes of the moving object in the three phases of high, medium, low speeds and to obtain its clear im...
By analyzing the performances and primary technical parameters of the APX-RS digital camera, the dynamic test was designed to shoot the aviation attitudes of the moving object in the three phases of high, medium, low speeds and to obtain its clear im...
2009, 29(1): 95-100.
doi: 10.11883/1001-1455(2009)01-0095-06
Abstract:
The constitutive descriptions of concrete materials idealize the pressure-volumetric strain relationship as the tri-linear equation of state and idealize the shear strength-pressure relationship as the Mohr-Coulomb yield criterion considering the ten...
The constitutive descriptions of concrete materials idealize the pressure-volumetric strain relationship as the tri-linear equation of state and idealize the shear strength-pressure relationship as the Mohr-Coulomb yield criterion considering the ten...
2009, 29(1): 101-104.
doi: 10.11883/1001-1455(2009)01-0101-04
Abstract:
A one-dimensional Lagrangian backward integeration method was used to analyze VISAR records of isentropic compression experiments. The pressure history at the window-sample interface calculated by the interface velocity history was proved to be succe...
A one-dimensional Lagrangian backward integeration method was used to analyze VISAR records of isentropic compression experiments. The pressure history at the window-sample interface calculated by the interface velocity history was proved to be succe...
2009, 29(1): 105-108.
doi: 10.11883/1001-1455(2009)01-0105-04
Abstract:
An optical-fiber displacement interferometer was proposed on the basis of the optical Doppler effects and heterodyne technique. The proposed interferometer was assembled by using the components well developed in the telecommunication industry, which ...
An optical-fiber displacement interferometer was proposed on the basis of the optical Doppler effects and heterodyne technique. The proposed interferometer was assembled by using the components well developed in the telecommunication industry, which ...
2009, 29(1): 109-112.
doi: 10.11883/1001-1455(2009)01-0109-04
Abstract:
A cook-off equipment was developed to explore influences of charge porosity on the cook-off response of explosives. The cook-off test was carried out by taking the TNT and JB-B explosives for examples. Experimental results indicate that with the incr...
A cook-off equipment was developed to explore influences of charge porosity on the cook-off response of explosives. The cook-off test was carried out by taking the TNT and JB-B explosives for examples. Experimental results indicate that with the incr...
