2016 Vol. 36, No. 3
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2016, 36(3): 289-296.
doi: 10.11883/1001-1455(2016)03-0289-08
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Abstract:
In this work we simulated the blasting excavation in a mine tunnel using a model test. Adopting the sound wave test method, we investigated the cumulative damage effects of young shotcrete under multiple blasting loads by analyzing variations of acou...
In this work we simulated the blasting excavation in a mine tunnel using a model test. Adopting the sound wave test method, we investigated the cumulative damage effects of young shotcrete under multiple blasting loads by analyzing variations of acou...
2016, 36(3): 297-304.
doi: 10.11883/1001-1455(2016)03-0297-08
Abstract:
To explore the mechanism of crack expansion in the adjacent tunnel under the influence of the combined stress field, a simulated experiment was carried out adopting the blast loading and static loading transmission of the dynamic caustics, and the re...
To explore the mechanism of crack expansion in the adjacent tunnel under the influence of the combined stress field, a simulated experiment was carried out adopting the blast loading and static loading transmission of the dynamic caustics, and the re...
2016, 36(3): 305-312.
doi: 10.11883/1001-1455(2016)03-0305-08
Abstract:
A method is presented for conservatively transferring cell-centered physical quantities from one mesh to another with second-order accuracy, which is well-suited for finite-volume methods that rely on cell-centered variables. The proposed methodology...
A method is presented for conservatively transferring cell-centered physical quantities from one mesh to another with second-order accuracy, which is well-suited for finite-volume methods that rely on cell-centered variables. The proposed methodology...
2016, 36(3): 313-318.
doi: 10.11883/1001-1455(2016)03-0313-06
Abstract:
The effect of hydrodynamic impact on the amphibious seaplane is an important consideration in its structural designing and intensity checking. In addition, such impact is a major factor affecting its structural weight. By varying two parameters: drop...
The effect of hydrodynamic impact on the amphibious seaplane is an important consideration in its structural designing and intensity checking. In addition, such impact is a major factor affecting its structural weight. By varying two parameters: drop...
2016, 36(3): 319-325.
doi: 10.11883/1001-1455(2016)03-0319-07
Abstract:
This paper proposes that both macroscopic and mesoscopic flaws should be considered in the dynamic damage constitutive model for the jointed rock mass. Firstly, the calculation formula of the macroscopic damage variable (tensor) of the jointed rock m...
This paper proposes that both macroscopic and mesoscopic flaws should be considered in the dynamic damage constitutive model for the jointed rock mass. Firstly, the calculation formula of the macroscopic damage variable (tensor) of the jointed rock m...
2016, 36(3): 326-332.
doi: 10.11883/1001-1455(2016)03-0326-07
Abstract:
In this work we investigated the dynamic behaviors of the projectile water entry using the SPH method. We developed our own SPH program based on the N-S equation of the Lagrange form and established a calculation model for the projectile water entry ...
In this work we investigated the dynamic behaviors of the projectile water entry using the SPH method. We developed our own SPH program based on the N-S equation of the Lagrange form and established a calculation model for the projectile water entry ...
2016, 36(3): 333-339.
doi: 10.11883/1001-1455(2016)03-0333-07
Abstract:
In this paper we report on the tests that investigate the blast resistance of graded sandwich plates. The deformation model, the back-face-sheet deflections and the core compressions have been compared with the test results obtained from tests done o...
In this paper we report on the tests that investigate the blast resistance of graded sandwich plates. The deformation model, the back-face-sheet deflections and the core compressions have been compared with the test results obtained from tests done o...
2016, 36(3): 340-346.
doi: 10.11883/1001-1455(2016)03-0340-07
Abstract:
According to the design specifications of national defense works and human defense works, a closed single rectangular cavity model was developed to obtain the explosion load distribution at the walls of typical cavities and the corresponding destruct...
According to the design specifications of national defense works and human defense works, a closed single rectangular cavity model was developed to obtain the explosion load distribution at the walls of typical cavities and the corresponding destruct...
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2016, 36(3): 347-352.
doi: 10.11883/1001-1455(2016)03-0347-06
Abstract:
We carried out experiments of suppressing the gasoline-air explosion by non-premixed nitrogen using the visualization experimental bench and a high-speed camera to take photos of the flame front extinction to capture the suppression process. Based on...
We carried out experiments of suppressing the gasoline-air explosion by non-premixed nitrogen using the visualization experimental bench and a high-speed camera to take photos of the flame front extinction to capture the suppression process. Based on...
2016, 36(3): 353-358.
doi: 10.11883/1001-1455(2016)03-0353-06
Abstract:
To obtain the characteristics and the mechanisms behind the penetration of steel ingot by linear shaped charge (LSC) with a cuniform cover, we built a three-dimensional numerical model using ANSYS/LS-DYNA program and performed a numerical simulation ...
To obtain the characteristics and the mechanisms behind the penetration of steel ingot by linear shaped charge (LSC) with a cuniform cover, we built a three-dimensional numerical model using ANSYS/LS-DYNA program and performed a numerical simulation ...
2016, 36(3): 359-369.
doi: 10.11883/1001-1455(2016)03-0359-11
Abstract:
Treating the target as the incompressible material, by assuming that the cavity expansion produce plastic-elastic response region, the decay function for the back free-surface effect of target is constructed. The forcing function of metallic targets ...
Treating the target as the incompressible material, by assuming that the cavity expansion produce plastic-elastic response region, the decay function for the back free-surface effect of target is constructed. The forcing function of metallic targets ...
2016, 36(3): 370-378.
doi: 10.11883/1001-1455(2016)03-0370-09
Abstract:
To study cracks propagation rules on filled fissured rock about dynamic fracture, air, clay and water were used as fillings of organic glass prefabricated fissures, under the condition of different angles and distances from blasthole to prefabricated...
To study cracks propagation rules on filled fissured rock about dynamic fracture, air, clay and water were used as fillings of organic glass prefabricated fissures, under the condition of different angles and distances from blasthole to prefabricated...
2016, 36(3): 379-385.
doi: 10.11883/1001-1455(2016)03-0379-07
Abstract:
The reflection and focusing of the shock wave propagating into a convergent tube can create a high-temperature and high-pressure region, which is significant for the detonation engine to induce the mixed combustible gases to detonate in ignition. Bas...
The reflection and focusing of the shock wave propagating into a convergent tube can create a high-temperature and high-pressure region, which is significant for the detonation engine to induce the mixed combustible gases to detonate in ignition. Bas...
2016, 36(3): 386-390.
doi: 10.11883/1001-1455(2016)03-0386-05
Abstract:
As the increasing quantity of space debris has become a great hazard to the high-voltage solar array of the spacecraft in orbit, there is a more urgent need to evaluate the discharge effect of hypervelocity on the solar array as a result of the impac...
As the increasing quantity of space debris has become a great hazard to the high-voltage solar array of the spacecraft in orbit, there is a more urgent need to evaluate the discharge effect of hypervelocity on the solar array as a result of the impac...
2016, 36(3): 391-399.
doi: 10.11883/1001-1455(2016)03-0391-09
Abstract:
To study damage characteristics of the shield building for nuclear power plant subjected to a large commercial aircraft impact, finite element models for Boeing 767 commercial aircraft impacting on a shield building made of steel-concrete-steel sandw...
To study damage characteristics of the shield building for nuclear power plant subjected to a large commercial aircraft impact, finite element models for Boeing 767 commercial aircraft impacting on a shield building made of steel-concrete-steel sandw...
2016, 36(3): 400-406.
doi: 10.11883/1001-1455(2016)03-0400-07
Abstract:
To explore a method for control over the boulders splitting morphology, cylindrical concrete specimens were penetrated by a linear-shaped charge, the splitting cracks' propagation and development were photographed and the splitting development proces...
To explore a method for control over the boulders splitting morphology, cylindrical concrete specimens were penetrated by a linear-shaped charge, the splitting cracks' propagation and development were photographed and the splitting development proces...
2016, 36(3): 407-415.
doi: 10.11883/1001-1455(2016)03-0407-09
Abstract:
In internal combustion engines, different combustion technologiescan result in different knocks, such as the conventional knock of gasoline engines, the super knock and the knock of HCCI engines.Though they are all caused by the auto-ignition of unbu...
In internal combustion engines, different combustion technologiescan result in different knocks, such as the conventional knock of gasoline engines, the super knock and the knock of HCCI engines.Though they are all caused by the auto-ignition of unbu...
2016, 36(3): 416-421.
doi: 10.11883/1001-1455(2016)03-0416-06
Abstract:
In this work we conducted numerical simulations of semi-circular bending (SCB) test of steel with cracks respectively in a static condition and under impact loading, using ANSYS/LS-DYNA, a finite element software. According to the results achieved fr...
In this work we conducted numerical simulations of semi-circular bending (SCB) test of steel with cracks respectively in a static condition and under impact loading, using ANSYS/LS-DYNA, a finite element software. According to the results achieved fr...
2016, 36(3): 422-428.
doi: 10.11883/1001-1455(2016)03-0422-07
Abstract:
The rate sensitivity of concrete-like brittle materials results mainly from their inhomogeneity, which leads to their different paths of crack development at different load rates and accounts for their different dynamic flexural strengths. On the bas...
The rate sensitivity of concrete-like brittle materials results mainly from their inhomogeneity, which leads to their different paths of crack development at different load rates and accounts for their different dynamic flexural strengths. On the bas...
2016, 36(3): 429-432.
doi: 10.11883/1001-1455(2016)03-0429-04
Abstract:
In this work we studied the effect of CO2 on explosion suppression for multi-component mixed gas at different initial temperatures by igniting the gas obtained from adding CO2 to the mixture of LPG and air. Our study indicates that when the volume fr...
In this work we studied the effect of CO2 on explosion suppression for multi-component mixed gas at different initial temperatures by igniting the gas obtained from adding CO2 to the mixture of LPG and air. Our study indicates that when the volume fr...
