2017 Vol. 37, No. 1
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2017, 37(1): 1-9.
doi: 10.11883/1001-1455(2017)01-0021-06
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Abstract:
Aiming at revealing the characteristics of premixed methane/air flame propagating in an obstructed duct.A 4 mm thick obstacle with a square hole of 50 mm×50 mm was equipped at 210 mm from the ignition source. In the experiment, the high-speed video p...
Aiming at revealing the characteristics of premixed methane/air flame propagating in an obstructed duct.A 4 mm thick obstacle with a square hole of 50 mm×50 mm was equipped at 210 mm from the ignition source. In the experiment, the high-speed video p...
2017, 37(1): 10-14.
doi: 10.11883/1001-1455(2017)01-0001-09
Abstract:
In simplifying large numbers of bolt connections in simulation to substitute the construction of the whole joint structure, it is essential to establish a joint constitutive model. In this paper, a shear constitutive model of the single lap bolt was ...
In simplifying large numbers of bolt connections in simulation to substitute the construction of the whole joint structure, it is essential to establish a joint constitutive model. In this paper, a shear constitutive model of the single lap bolt was ...
2017, 37(1): 15-20.
doi: 10.11883/1001-1455(2017)01-0015-06
Abstract:
In this work the digital image correlation (DIC) technique was used for the full field measurement of the dynamic tension strain in traditional split Hopkinson tension bar (SHTB) experiments using the commercial image correlation software and the dig...
In this work the digital image correlation (DIC) technique was used for the full field measurement of the dynamic tension strain in traditional split Hopkinson tension bar (SHTB) experiments using the commercial image correlation software and the dig...
2017, 37(1): 21-26.
doi: 10.11883/1001-1455(2017)01-0010-05
Abstract:
Obtaining accurate waveforms is significant in impact mechanics numerical calculation. This paper is to analyze how the kernel functions and smooth length affect the result of stress wave simulation. The SPH (smoothed particle hydrodynamics) formulat...
Obtaining accurate waveforms is significant in impact mechanics numerical calculation. This paper is to analyze how the kernel functions and smooth length affect the result of stress wave simulation. The SPH (smoothed particle hydrodynamics) formulat...
2017, 37(1): 27-36.
doi: 10.11883/1001-1455(2017)01-0027-10
Abstract:
In order to understand the law of vibration propagation and the damage degree of the bedding rock slope during blasting excavation, we studied the bedding slope in Puli-Xuanwei Expressway in Yunnan Province as an example. By applying acoustic tests i...
In order to understand the law of vibration propagation and the damage degree of the bedding rock slope during blasting excavation, we studied the bedding slope in Puli-Xuanwei Expressway in Yunnan Province as an example. By applying acoustic tests i...
2017, 37(1): 37-45.
doi: 10.11883/1001-1455(2017)01-0037-09
Abstract:
The dynamic response of sandwich plates with identical face sheets separated by compressible PVC (polyvinyl chloride) core subjected to shock loading was investigated. Combined with the three-dimensional digital image correlation technology, the defl...
The dynamic response of sandwich plates with identical face sheets separated by compressible PVC (polyvinyl chloride) core subjected to shock loading was investigated. Combined with the three-dimensional digital image correlation technology, the defl...
2017, 37(1): 46-52.
doi: 10.11883/1001-1455(2017)01-0046-07
Abstract:
To investigate the characteristics of the AP/HTPB composition propellant at different heating rates in the slow cook-off, we constructed a a model consisting of two-dimensional unsteady-state heat transfer and two-step chemical reaction kinetics. The...
To investigate the characteristics of the AP/HTPB composition propellant at different heating rates in the slow cook-off, we constructed a a model consisting of two-dimensional unsteady-state heat transfer and two-step chemical reaction kinetics. The...
2017, 37(1): 53-60.
doi: 10.11883/1001-1455(2017)01-0053-08
Abstract:
An experimental system of a confined space with a weakly constrained structure at the top was established. A series of gasoline/air mixture explosion experiments were conducted, and overpressure characteristics as well as flame behaviors were obtaine...
An experimental system of a confined space with a weakly constrained structure at the top was established. A series of gasoline/air mixture explosion experiments were conducted, and overpressure characteristics as well as flame behaviors were obtaine...
2017, 37(1): 61-67.
doi: 10.11883/1001-1455(2017)01-0061-07
Abstract:
Spallation process of melted metal on release or shock attracts considerable attention for basic weapon physics studies and engineering applications. In the present study, numerous cavitations within the shocked metal were initiated to induce the liq...
Spallation process of melted metal on release or shock attracts considerable attention for basic weapon physics studies and engineering applications. In the present study, numerous cavitations within the shocked metal were initiated to induce the liq...
2017, 37(1): 68-76.
doi: 10.11883/1001-1455(2017)01-0068-09
Abstract:
In the process of the premixed gas flame propagation, obstacles have vital influence on the flame's structure and propagation, and will enhance the flame acceleration and the DDT process. Through the methane/air premixed flame propagation experiment ...
In the process of the premixed gas flame propagation, obstacles have vital influence on the flame's structure and propagation, and will enhance the flame acceleration and the DDT process. Through the methane/air premixed flame propagation experiment ...
2017, 37(1): 77-83.
doi: 10.11883/1001-1455(2017)01-0077-07
Abstract:
In this work, based on the blasting vibration live data collected, the energy distributions at different frequency bands for the blasting vibration signals were obtained by the wavelet packet analysis technology. By comparing the results of each poin...
In this work, based on the blasting vibration live data collected, the energy distributions at different frequency bands for the blasting vibration signals were obtained by the wavelet packet analysis technology. By comparing the results of each poin...
2017, 37(1): 84-91.
doi: 10.11883/1001-1455(2017)01-0084-08
Abstract:
The sheet explosive can be used to simulate the space structure response caused by the high-power pulse X-rays, and the impulse coupling of the sheet explosive and the target is the basis for designing the simulated load. Based on the numerical resul...
The sheet explosive can be used to simulate the space structure response caused by the high-power pulse X-rays, and the impulse coupling of the sheet explosive and the target is the basis for designing the simulated load. Based on the numerical resul...
2017, 37(1): 92-98.
doi: 10.11883/1001-1455(2017)01-0092-07
Abstract:
In order to analyze the anti-blast properties of the RC superimposed slab's shear wall, comparative experimental studies of two RC superimposed slab shear walls and two in-situ cast shear walls under explosion were conducted. The structural failure f...
In order to analyze the anti-blast properties of the RC superimposed slab's shear wall, comparative experimental studies of two RC superimposed slab shear walls and two in-situ cast shear walls under explosion were conducted. The structural failure f...
2017, 37(1): 99-106.
doi: 10.11883/1001-1455(2017)01-0099-08
Abstract:
With a view to obtaining the characterisstic of shock response of the hull to underwater explosion, based on the experimental impact vibration data subjected to underwater explosion trial of ship, the time-frequency characteristics of the monitored i...
With a view to obtaining the characterisstic of shock response of the hull to underwater explosion, based on the experimental impact vibration data subjected to underwater explosion trial of ship, the time-frequency characteristics of the monitored i...
2017, 37(1): 107-113.
doi: 10.11883/1001-1455(2017)01-0107-07
Abstract:
In order to reveal the mechanism of the interference vibration reduction of the short millisecond blasting of a high-precision detonator, on-site measured single-stage blasting vibration signals were selected to study the time frequency characteristi...
In order to reveal the mechanism of the interference vibration reduction of the short millisecond blasting of a high-precision detonator, on-site measured single-stage blasting vibration signals were selected to study the time frequency characteristi...
2017, 37(1): 114-119.
doi: 10.11883/1001-1455(2017)01-0114-06
Abstract:
Numerical simulation of multi-material flows has been an important issues in CFD, and most CFD production codes used for multi-material flow simulation is of either first or second order accuracy, too inefficient and costly with its grid refinement f...
Numerical simulation of multi-material flows has been an important issues in CFD, and most CFD production codes used for multi-material flow simulation is of either first or second order accuracy, too inefficient and costly with its grid refinement f...
2017, 37(1): 120-125.
doi: 10.11883/1001-1455(2017)01-0120-06
Abstract:
In the uniaxial compression, deformation with damage and temperature-rise of two types of plastic-bonded explosives were recorded by means of a high-speed camera and a high-speed infrared radio camera. The results show that the damage evolution and t...
In the uniaxial compression, deformation with damage and temperature-rise of two types of plastic-bonded explosives were recorded by means of a high-speed camera and a high-speed infrared radio camera. The results show that the damage evolution and t...
2017, 37(1): 126-133.
doi: 10.11883/1001-1455(2017)01-0126-08
Abstract:
The experiment of the single shot impacting the 316L stainless steel surface was carried out using a surface nano-crystallization testing machine. Three-dimensional morphology of the dimple was observed with a laser scanning confocal microscope, and ...
The experiment of the single shot impacting the 316L stainless steel surface was carried out using a surface nano-crystallization testing machine. Three-dimensional morphology of the dimple was observed with a laser scanning confocal microscope, and ...
2017, 37(1): 134-139.
doi: 10.11883/1001-1455(2017)01-0134-06
Abstract:
In this work we performed experimental tests using the dynamic strain test and high speed photography system to study the mechanism of the air-deck slotted charging structure blasting, with four axial air-deck structures adopted. The results show tha...
In this work we performed experimental tests using the dynamic strain test and high speed photography system to study the mechanism of the air-deck slotted charging structure blasting, with four axial air-deck structures adopted. The results show tha...
2017, 37(1): 140-149.
doi: 10.11883/1001-1455(2017)01-0140-10
Abstract:
In this work, by using the ANSYS and LS-DYNA softwares, we established the three-dimensional finite element model of the refuge chamber, the gas/gas and grime and the laneway. The ultimate strength and deformation of the refuge chamber were simulated...
In this work, by using the ANSYS and LS-DYNA softwares, we established the three-dimensional finite element model of the refuge chamber, the gas/gas and grime and the laneway. The ultimate strength and deformation of the refuge chamber were simulated...
2017, 37(1): 150-156.
doi: 10.11883/1001-1455(2017)01-0150-07
Abstract:
Adiabatic shear band (ASB) is a typical failure mode of material during high speed deformation. In order to better understand its formation and expansion process, two-dimensional numerical simulation with the Johnson-Cook constitutive model was condu...
Adiabatic shear band (ASB) is a typical failure mode of material during high speed deformation. In order to better understand its formation and expansion process, two-dimensional numerical simulation with the Johnson-Cook constitutive model was condu...
2017, 37(1): 157-161.
doi: 10.11883/1001-1455(2017)01-0157-05
Abstract:
In the present work, the parameters of shock wave and secondary pressure wave with different aluminum powder content and particle size of CL-20-based aluminized explosives were measured by underwater explosion testing, the shock wave energy and bubbl...
In the present work, the parameters of shock wave and secondary pressure wave with different aluminum powder content and particle size of CL-20-based aluminized explosives were measured by underwater explosion testing, the shock wave energy and bubbl...
2017, 37(1): 162-168.
doi: 10.11883/1001-1455(2017)01-0162-07
Abstract:
Using the digital-laser dynamic caustic system, the impact tests of the three-point bending beam were performed to investigate the interaction mechanism between a pre-existing crack defect with different angles and a running crack. The experimental r...
Using the digital-laser dynamic caustic system, the impact tests of the three-point bending beam were performed to investigate the interaction mechanism between a pre-existing crack defect with different angles and a running crack. The experimental r...
