2007 Vol. 27, No. 1
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2007, 27(1): 1-6.
doi: 10.11883/1001-1455(2007)01-0001-06
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Abstract:
On the basis of the developed numerical treatment to numerically simulate flows with moving and deforming objects, the movement of a cover induced by the bursting from a pressurized vessel and its effects on the environmental flow field are investiga...
On the basis of the developed numerical treatment to numerically simulate flows with moving and deforming objects, the movement of a cover induced by the bursting from a pressurized vessel and its effects on the environmental flow field are investiga...
Analysis of evolutionary power spectra density functionof ground motion induced by blasting seismic
2007, 27(1): 7-11.
doi: 10.11883/1001-1455(2007)01-0007-05
Abstract:
According to Priestly evolutionary random process theory, the evolutionary power spectra density function of nonstationary random process is presented by theory method. By means of nonstationary random evolutionary theory, the evolutionary power spec...
According to Priestly evolutionary random process theory, the evolutionary power spectra density function of nonstationary random process is presented by theory method. By means of nonstationary random evolutionary theory, the evolutionary power spec...
2007, 27(1): 12-17.
doi: 10.11883/1001-1455(2007)01-0012-06
Abstract:
This paper focuses on the study of launch dynamics for self-propelled artillery. In order to exactly compute the motion of projectile in gun tube and the initial disturbance, the theory of two-phase flow interior ballistic is applied to the study on ...
This paper focuses on the study of launch dynamics for self-propelled artillery. In order to exactly compute the motion of projectile in gun tube and the initial disturbance, the theory of two-phase flow interior ballistic is applied to the study on ...
2007, 27(1): 18-25.
doi: 10.11883/1001-1455(2007)01-0018-08
Abstract:
The main characteristics of seismic source function in underground explosion are studied by seismological method and numerical method. Especially, the influence of water content on seismic source function is studied, and it reveals that the coupling ...
The main characteristics of seismic source function in underground explosion are studied by seismological method and numerical method. Especially, the influence of water content on seismic source function is studied, and it reveals that the coupling ...
2007, 27(1): 26-33.
doi: 10.11883/1001-1455(2007)01-0026-08
Abstract:
In order to explore an optimization design method to design explosion protection stiffened plates, finite element modeling was carried out to simulate the response of clamped rectangle single stiffened plates subjected to blast load. Failure modes of...
In order to explore an optimization design method to design explosion protection stiffened plates, finite element modeling was carried out to simulate the response of clamped rectangle single stiffened plates subjected to blast load. Failure modes of...
2007, 27(1): 34-39.
doi: 10.11883/1001-1455(2007)01-0034-06
Abstract:
The vibration is induced by blasting during tunnel excavation that can have some adverse effect on the adjacent concrete lining. A theoretical method to determine safety velocity of concrete lining under blasting vibration loading is proposed, by cal...
The vibration is induced by blasting during tunnel excavation that can have some adverse effect on the adjacent concrete lining. A theoretical method to determine safety velocity of concrete lining under blasting vibration loading is proposed, by cal...
2007, 27(1): 40-44.
doi: 10.11883/1001-1455(2007)01-0040-05
Abstract:
The dynamic tension experiments of OFHC Cu rings at different voltages were carried out by electromagnetically driven expansion technique. The plastic instability, i.e. multiple necking fracture before the fragmentation was fundamentally analyzed, an...
The dynamic tension experiments of OFHC Cu rings at different voltages were carried out by electromagnetically driven expansion technique. The plastic instability, i.e. multiple necking fracture before the fragmentation was fundamentally analyzed, an...
2007, 27(1): 45-49.
doi: 10.11883/1001-1455(2007)01-0045-05
Abstract:
Measuring technology and data processing method of two-path optical current sensor were proposed. High pulse current could be measured by two-path configuration and arc-tangential function processing method with the constant output power of laser. Th...
Measuring technology and data processing method of two-path optical current sensor were proposed. High pulse current could be measured by two-path configuration and arc-tangential function processing method with the constant output power of laser. Th...
2007, 27(1): 50-56.
doi: 10.11883/1001-1455(2007)01-0050-07
Abstract:
In order to perfectly analyze the dynamics problem by numerical manifold method (NMM), adopts the Newmark method of dynamic finite element method to improve the algorithm in original NMM on the basis of analyzing the solution idea of dynamics problem...
In order to perfectly analyze the dynamics problem by numerical manifold method (NMM), adopts the Newmark method of dynamic finite element method to improve the algorithm in original NMM on the basis of analyzing the solution idea of dynamics problem...
2007, 27(1): 57-62.
doi: 10.11883/1001-1455(2007)01-0057-06
Abstract:
Complex function method and multi-polar coordinate and Fourier series expansion technology are used to study the scattering of fixed circular inclusion in right-angled plane to steady incident planar SH-wave. The incident wave and the reflection wave...
Complex function method and multi-polar coordinate and Fourier series expansion technology are used to study the scattering of fixed circular inclusion in right-angled plane to steady incident planar SH-wave. The incident wave and the reflection wave...
2007, 27(1): 63-67.
doi: 10.11883/1001-1455(2007)01-0063-05
Abstract:
The propagating regularity and influencing factor of shock wave in a T-shaped tunnel were studied experimentally. On the basis of nondimensional analysis, a simplified engineering model was established. By collecting data gained from 4 experiments, a...
The propagating regularity and influencing factor of shock wave in a T-shaped tunnel were studied experimentally. On the basis of nondimensional analysis, a simplified engineering model was established. By collecting data gained from 4 experiments, a...
2007, 27(1): 68-74.
doi: 10.11883/1001-1455(2007)01-0068-07
Abstract:
Based on the principle of blasting seismic waves energy disperse in clay stone, the predominant direction of waves energy flowing and the relation between vibrations peek values and the distance from blasting sources, are researched, so that the rule...
Based on the principle of blasting seismic waves energy disperse in clay stone, the predominant direction of waves energy flowing and the relation between vibrations peek values and the distance from blasting sources, are researched, so that the rule...
2007, 27(1): 75-81.
doi: 10.11883/1001-1455(2007)01-0075-07
Abstract:
Based on the characteristic of blasting construction, the dynamic effect caused by blasting construction for the typical double side excavation method is studied by numerical simulation. The general laws of dynamic effect are proposed at the boundary...
Based on the characteristic of blasting construction, the dynamic effect caused by blasting construction for the typical double side excavation method is studied by numerical simulation. The general laws of dynamic effect are proposed at the boundary...
2007, 27(1): 82-86.
doi: 10.11883/1001-1455(2007)01-0082-05
Abstract:
The defense effect of underwater blast injury was experimentally researched to explore the defensive material and its structural style. Results show that the selected compound material is a good defense against underwater impact wave and provide a ex...
The defense effect of underwater blast injury was experimentally researched to explore the defensive material and its structural style. Results show that the selected compound material is a good defense against underwater impact wave and provide a ex...
2007, 27(1): 87-90.
doi: 10.11883/1001-1455(2007)01-0087-04
Abstract:
The mismatch of cross-sectional area especially for hard materials will result in distinct two-dimensional effect in SHPB experiment. With finite element method and dimensional analysis, the influence is defined as concave two-dimensional effect whic...
The mismatch of cross-sectional area especially for hard materials will result in distinct two-dimensional effect in SHPB experiment. With finite element method and dimensional analysis, the influence is defined as concave two-dimensional effect whic...
2007, 27(1): 91-96.
doi: 10.11883/1001-1455(2007)01-0091-06
Abstract:
Adiabatic shear bands and white layers in primary and secondary deformation zones within the serrated chips formed during high speed cutting of 30CrNi3MoV steel were investigated by optical microscope, microhardness tester, XRD, SEM and TEM. Results ...
Adiabatic shear bands and white layers in primary and secondary deformation zones within the serrated chips formed during high speed cutting of 30CrNi3MoV steel were investigated by optical microscope, microhardness tester, XRD, SEM and TEM. Results ...
