2014 Vol. 34, No. 4
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2014, 34(4): 385-391.
doi: 10.11883/1001-1455(2014)04-0385-07
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Abstract:
Dynamic buckling of thin rectangular plates under elastic compression waves caused by unaxial impact was investigated. Governing equations and a supplementary restraint-equation at compression wave front were obtained on the basis of energy transform...
Dynamic buckling of thin rectangular plates under elastic compression waves caused by unaxial impact was investigated. Governing equations and a supplementary restraint-equation at compression wave front were obtained on the basis of energy transform...
2014, 34(4): 392-396.
doi: 10.11883/1001-1455(2014)04-0392-05
Abstract:
Ejecta mixing takes place at the meta-gas interface under strong shock, where the breakup of ejected particles is a very important affecting factor. By adopting Taylor analogy breakup (TAB) model, the breakup effect of the melted lead on its transpor...
Ejecta mixing takes place at the meta-gas interface under strong shock, where the breakup of ejected particles is a very important affecting factor. By adopting Taylor analogy breakup (TAB) model, the breakup effect of the melted lead on its transpor...
2014, 34(4): 397-403.
doi: 10.11883/1001-1455(2014)04-0397-07
Abstract:
Impact limit equations of honeycomb sandwich panel are the key of risk assessment of the spacecraft's impact from space debris. At present, the indicators of prediction ability mainly are the rate of correctly prediction (including the total rate and...
Impact limit equations of honeycomb sandwich panel are the key of risk assessment of the spacecraft's impact from space debris. At present, the indicators of prediction ability mainly are the rate of correctly prediction (including the total rate and...
2014, 34(4): 404-408.
doi: 10.11883/1001-1455(2014)04-0404-05
Abstract:
There are various models of the debris cloud produced by normal impact of spherical projectile, but a common ground of the models is that the head shape of the debris cloud is ellipsoidal. In order to identify the head shape of the debris cloud, a ne...
There are various models of the debris cloud produced by normal impact of spherical projectile, but a common ground of the models is that the head shape of the debris cloud is ellipsoidal. In order to identify the head shape of the debris cloud, a ne...
2014, 34(4): 409-414.
doi: 10.11883/1001-1455(2014)04-0409-06
Abstract:
Nose shape of projectiles is an important factor influencing the penetration ability. For high speed/ultra high speed kinetic energy penetration of ideal rigid projectiles, this factor is becoming more serious. Based on the classical cavity expansion...
Nose shape of projectiles is an important factor influencing the penetration ability. For high speed/ultra high speed kinetic energy penetration of ideal rigid projectiles, this factor is becoming more serious. Based on the classical cavity expansion...
2014, 34(4): 415-420.
doi: 10.11883/1001-1455(2014)04-0415-06
Abstract:
The explosion induced fracture of metallic cylinder under different detonating modes was simulated. The results show that different detonating modes lead to significant differences on the pressure and apply work history of the cylindrical shell. A se...
The explosion induced fracture of metallic cylinder under different detonating modes was simulated. The results show that different detonating modes lead to significant differences on the pressure and apply work history of the cylindrical shell. A se...
2014, 34(4): 421-426.
doi: 10.11883/1001-1455(2014)04-0421-06
Abstract:
In order to predict detonation velocity of composite explosive accurately (esp. aluminium-containing explosive), a new equation of predicting detonation velocity of composite explosive was derived in the weighted-volume method. With the new equation,...
In order to predict detonation velocity of composite explosive accurately (esp. aluminium-containing explosive), a new equation of predicting detonation velocity of composite explosive was derived in the weighted-volume method. With the new equation,...
2014, 34(4): 427-432.
doi: 10.11883/1001-1455(2014)04-0427-06
Abstract:
For the first time, MgH2powders both as sensitizers and energetic materials in the emulsion explosive was studied on the effects of shock－wave resistance with shock－wave generator and experiments of underwater explosion.Compared with emulsion explosi...
For the first time, MgH2powders both as sensitizers and energetic materials in the emulsion explosive was studied on the effects of shock－wave resistance with shock－wave generator and experiments of underwater explosion.Compared with emulsion explosi...
2014, 34(4): 433-438.
doi: 10.11883/1001-1455(2014)04-0433-06
Abstract:
An improved split Hopkinson pressure bar device was applied and a direct impact Hopkinson experimental program with long bullets was designed to measure the dynamic properties of closed-cell aluminum foam under high temperatures. Stress-time curves o...
An improved split Hopkinson pressure bar device was applied and a direct impact Hopkinson experimental program with long bullets was designed to measure the dynamic properties of closed-cell aluminum foam under high temperatures. Stress-time curves o...
2014, 34(4): 439-443.
doi: 10.11883/1001-1455(2014)04-0439-05
Abstract:
This paper presents a 3D numerical simulation of expanding process of high pressure cylindrical bubbles in underwater explosion. Level set method was used to track gas-water interface. The detail on precise definition of initial level set values of c...
This paper presents a 3D numerical simulation of expanding process of high pressure cylindrical bubbles in underwater explosion. Level set method was used to track gas-water interface. The detail on precise definition of initial level set values of c...
2014, 34(4): 444-450.
doi: 10.11883/1001-1455(2014)04-0444-07
Abstract:
The experimental investigation of thin circular plate of pseudo-elastic TiNi alloy under fixed supports and transversal impact loading was conducted using a revised apparatus of Hopkinson bar. The experimental result of pseudo-elastic TiNi alloy was ...
The experimental investigation of thin circular plate of pseudo-elastic TiNi alloy under fixed supports and transversal impact loading was conducted using a revised apparatus of Hopkinson bar. The experimental result of pseudo-elastic TiNi alloy was ...
2014, 34(4): 451-456.
doi: 10.11883/1001-1455(2014)04-0451-06
Abstract:
This paper was dedicated to developing a numerical model which could predict the delamination of composite T-joint structures caused by high velocity impact of hailstone. Experiments of hailstone impact and subsequent numerical analyses were performe...
This paper was dedicated to developing a numerical model which could predict the delamination of composite T-joint structures caused by high velocity impact of hailstone. Experiments of hailstone impact and subsequent numerical analyses were performe...
2014, 34(4): 457-463.
doi: 10.11883/1001-1455(2014)04-0457-07
Abstract:
In order to increase cavity diameter and meet the penetration depth requirement of jet penetration into concrete, a double-layered liner that could form a jacketed jet was designed. Moreover, three types of penetration modes during the process of jac...
In order to increase cavity diameter and meet the penetration depth requirement of jet penetration into concrete, a double-layered liner that could form a jacketed jet was designed. Moreover, three types of penetration modes during the process of jac...
2014, 34(4): 464-470.
doi: 10.11883/1001-1455(2014)04-0464-07
Abstract:
Deformation behavior of closed-cell metallic foam under uniaxial dynamic compression was investigated using the finite element method of ABAQUS/Explicit code. The random 3D Voronoi technique was employed to construct foam specimens. Three deformation...
Deformation behavior of closed-cell metallic foam under uniaxial dynamic compression was investigated using the finite element method of ABAQUS/Explicit code. The random 3D Voronoi technique was employed to construct foam specimens. Three deformation...
2014, 34(4): 471-475.
doi: 10.11883/1001-1455(2014)04-0471-05
Abstract:
An infrared detector system was introduced into the apparatus of the split Hopkinson pressure bar. Real-time temperature of the dynamic deformed specimens of pseudo-elastic TiNi alloy and aluminium alloy was measured with calibrated curves of tempera...
An infrared detector system was introduced into the apparatus of the split Hopkinson pressure bar. Real-time temperature of the dynamic deformed specimens of pseudo-elastic TiNi alloy and aluminium alloy was measured with calibrated curves of tempera...
2014, 34(4): 476-482.
doi: 10.11883/1001-1455(2014)04-0476-07
Abstract:
An improved split Hopkinson bar was used for testing the dynamic tensile behaviour of low strength materials. This device included an aluminum transmitted bar and the semiconductor gages to capture the weak strain signal. For material of aramid fiber...
An improved split Hopkinson bar was used for testing the dynamic tensile behaviour of low strength materials. This device included an aluminum transmitted bar and the semiconductor gages to capture the weak strain signal. For material of aramid fiber...
2014, 34(4): 483-488.
doi: 10.11883/1001-1455(2014)04-0483-06
Abstract:
Based on the split Hopkinson pressure bar (SHPB), a new loading experimental technology was developed for conducting expanding ring test which is used to study the dynamic tensile deformation and the fracture (fragmentation) properties of materials. ...
Based on the split Hopkinson pressure bar (SHPB), a new loading experimental technology was developed for conducting expanding ring test which is used to study the dynamic tensile deformation and the fracture (fragmentation) properties of materials. ...
2014, 34(4): 489-494.
doi: 10.11883/1001-1455(2014)04-0489-06
Abstract:
The main factors which influence ignition performance of igniter tube with large ratio of length to diameter and consolidated charge were compared by simulation with the calculation program, and the ignition performance was analyzed in different cons...
The main factors which influence ignition performance of igniter tube with large ratio of length to diameter and consolidated charge were compared by simulation with the calculation program, and the ignition performance was analyzed in different cons...
2014, 34(4): 495-500.
doi: 10.11883/1001-1455(2014)04-0495-06
Abstract:
In order to obtain the casting speed of rock in pin-point blasting of sloping surface, a research was carried out by the field test, theoretical analysis, the high-speed photography and numerical simulation. The results of research show that maximum ...
In order to obtain the casting speed of rock in pin-point blasting of sloping surface, a research was carried out by the field test, theoretical analysis, the high-speed photography and numerical simulation. The results of research show that maximum ...
2014, 34(4): 501-507.
doi: 10.11883/1001-1455(2014)04-0501-07
Abstract:
Compared with entropy stable schemes, entropy consistent schemes control entropy production more exactly and effectively eliminate phenomena such as expansion shocks and spurious oscillations. By using WENO (weighted essentially non-oscillatory) reco...
Compared with entropy stable schemes, entropy consistent schemes control entropy production more exactly and effectively eliminate phenomena such as expansion shocks and spurious oscillations. By using WENO (weighted essentially non-oscillatory) reco...
2014, 34(4): 508-512.
doi: 10.11883/1001-1455(2014)04-0508-05
Abstract:
In order to investigate the characteristics of muzzle noise, a numerical study on jet noise induced by complex flows discharging from 7.62 mm gun is achieved. Because of the complex flows structure, it is not easy to study muzzle noise by direct simu...
In order to investigate the characteristics of muzzle noise, a numerical study on jet noise induced by complex flows discharging from 7.62 mm gun is achieved. Because of the complex flows structure, it is not easy to study muzzle noise by direct simu...
