2018 Vol. 38, No. 6
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2018, 38(6): 1181-1188.
doi: 10.11883/bzycj-2018-0014
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Abstract:
In order to achieve the time-history curves of chamber pressure conveniently and efficiently at the lab-scale and further to investigate the damage patterns of typical structures and materials during transient high pressure in the chamber, a chamber ...
In order to achieve the time-history curves of chamber pressure conveniently and efficiently at the lab-scale and further to investigate the damage patterns of typical structures and materials during transient high pressure in the chamber, a chamber ...
2018, 38(6): 1189-1199.
doi: 10.11883/bzycj-2018-0115
Abstract:
Experimental studies of the vertical water entry of projectile with 90° cone-shaped head were conducted by using high speed camera. The pinch-off types and evolutionary process of the cavity were comprehensively discussed at different water entry imp...
Experimental studies of the vertical water entry of projectile with 90° cone-shaped head were conducted by using high speed camera. The pinch-off types and evolutionary process of the cavity were comprehensively discussed at different water entry imp...
2018, 38(6): 1200-1217.
doi: 10.11883/bzycj-2018-0173
Abstract:
The hypervelocity kinetic energy weapon that strikes the ground at the speed from 5 Mach to 15 Mach has some unique characteristics of penetration mechanism and damage effects, which cannot be accurately described by ths existing theories.In this pap...
The hypervelocity kinetic energy weapon that strikes the ground at the speed from 5 Mach to 15 Mach has some unique characteristics of penetration mechanism and damage effects, which cannot be accurately described by ths existing theories.In this pap...
2018, 38(6): 1218-1230.
doi: 10.11883/bzycj-2017-0122
Abstract:
Expanding the advantages of flattened ring geometry, a new test specimen geometry with a longer fracture path was advised to investigate the complete dynamic fracture process.This geometry was cracked eccentrically holed flattened disc (CEHFD) which ...
Expanding the advantages of flattened ring geometry, a new test specimen geometry with a longer fracture path was advised to investigate the complete dynamic fracture process.This geometry was cracked eccentrically holed flattened disc (CEHFD) which ...
2018, 38(6): 1231-1240.
doi: 10.11883/bzycj-2017-0413
Abstract:
To achieve excellent penetration performance with high-quality utilization ratio, the symmetrical grooved-nose projectile is proposed between the ogive-nose projectile and conical-nose projectile.Aiming to provide insight into the penetration perform...
To achieve excellent penetration performance with high-quality utilization ratio, the symmetrical grooved-nose projectile is proposed between the ogive-nose projectile and conical-nose projectile.Aiming to provide insight into the penetration perform...
2018, 38(6): 1241-1246.
doi: 10.11883/bzycj-2017-0154
Abstract:
Non-linear dynamical finite element software AUTODYN was used to simulate the shock initiation of steel-covered charge impacted by high-velocity fragments. The interlayer effect was studied based on the pressure history of initiation when different m...
Non-linear dynamical finite element software AUTODYN was used to simulate the shock initiation of steel-covered charge impacted by high-velocity fragments. The interlayer effect was studied based on the pressure history of initiation when different m...
2018, 38(6): 1247-1254.
doi: 10.11883/bzycj-2017-0132
Abstract:
In this work, we proposed a specimen with a new configuration specimen, i.e.double inclined bottom central cracked specimen (DIBCC) to explore a more suitable configuration specimen for the study of the behavior of Mode Ⅰ crack under impacts, by cond...
In this work, we proposed a specimen with a new configuration specimen, i.e.double inclined bottom central cracked specimen (DIBCC) to explore a more suitable configuration specimen for the study of the behavior of Mode Ⅰ crack under impacts, by cond...
2018, 38(6): 1255-1261.
doi: 10.11883/bzycj-2017-0219
Abstract:
In this study, using a split Hopkinson pressure bar (SHPB), we assembled a fast-responding infrared temperature measurement system, capable of simultaneously obtaining the superficial temperature change of the HTPB propellant in impact experiments, t...
In this study, using a split Hopkinson pressure bar (SHPB), we assembled a fast-responding infrared temperature measurement system, capable of simultaneously obtaining the superficial temperature change of the HTPB propellant in impact experiments, t...
2018, 38(6): 1262-1270.
doi: 10.11883/bzycj-2017-0179
Abstract:
This paper conducted 11 split Hopkinson pressure bar (SHPB) tests on the calcareous sand sampled from a calcareous reef in China and silica sand sampled from Fujian Provence of China. The relative density is 90%. The strain-rate history, strain histo...
This paper conducted 11 split Hopkinson pressure bar (SHPB) tests on the calcareous sand sampled from a calcareous reef in China and silica sand sampled from Fujian Provence of China. The relative density is 90%. The strain-rate history, strain histo...
2018, 38(6): 1271-1277.
doi: 10.11883/bzycj-2017-0201
Abstract:
Rock mass is a geological body with a complex hierarchical structure. Based on Sadovsky's concept of block hierarchy, and considering that there are two stable invariants of λ and μ△ existing in rock mass, a simplified analytical model is established...
Rock mass is a geological body with a complex hierarchical structure. Based on Sadovsky's concept of block hierarchy, and considering that there are two stable invariants of λ and μ△ existing in rock mass, a simplified analytical model is established...
2018, 38(6): 1278-1285.
doi: 10.11883/bzycj-2017-0210
Abstract:
In the present study, we performed theoretical calculation, numerical simulation and experimental test to investigate the ricochet performance of cylindrical fragments. The fragment, 5.7 mm in diameter and 6.7 mm in length, impacted aluminum plates 2...
In the present study, we performed theoretical calculation, numerical simulation and experimental test to investigate the ricochet performance of cylindrical fragments. The fragment, 5.7 mm in diameter and 6.7 mm in length, impacted aluminum plates 2...
2018, 38(6): 1286-1394.
doi: 10.11883/bzycj-2017-0215
Abstract:
WALE LES model coupled with Zimont premixed combustion model were applied to study the characteristics of the flame of gasoline-air mixture explosions. Results by LES simulation, RNG k-ε model and experiments were compared with each other, and the co...
WALE LES model coupled with Zimont premixed combustion model were applied to study the characteristics of the flame of gasoline-air mixture explosions. Results by LES simulation, RNG k-ε model and experiments were compared with each other, and the co...
2018, 38(6): 1295-1302.
doi: 10.11883/bzycj-2017-0197
Abstract:
In this work, to forestall the domino effects resulting from the container explosion that may lead to serious damages to equipments and devices in a chemical industry park impacted by explosion fragments, we obtained the penetrating morphology, penet...
In this work, to forestall the domino effects resulting from the container explosion that may lead to serious damages to equipments and devices in a chemical industry park impacted by explosion fragments, we obtained the penetrating morphology, penet...
2018, 38(6): 1303-1309.
doi: 10.11883/bzycj-2017-0185
Abstract:
Via self-designed detonation tube, the detonation characteristics of hydrocarbon fuels were studied, and the conditions of low temperature and vacuum were considered. After systematic experiments, the relationship between detonation characteristics a...
Via self-designed detonation tube, the detonation characteristics of hydrocarbon fuels were studied, and the conditions of low temperature and vacuum were considered. After systematic experiments, the relationship between detonation characteristics a...
2018, 38(6): 1310-1316.
doi: 10.11883/bzycj-2018-0049
Abstract:
Based on the Hopkinson pressure bar and digital image correlation (DIC) techniques, a new Lagrangian inverse analysis experimental method was proposed to study the dynamic constitutive relation of brittle materials. A series of speckle images of long...
Based on the Hopkinson pressure bar and digital image correlation (DIC) techniques, a new Lagrangian inverse analysis experimental method was proposed to study the dynamic constitutive relation of brittle materials. A series of speckle images of long...
2018, 38(6): 1317-1324.
doi: 10.11883/bzycj-2017-0181
Abstract:
In this study, based on SPH and using AUTODYN-2D, we analyzed the hyper velocity penetration of tungsten rod into four types of layered shielding structures consisting of granite shielding layer, air/sand distribution layer and concrete structure lay...
In this study, based on SPH and using AUTODYN-2D, we analyzed the hyper velocity penetration of tungsten rod into four types of layered shielding structures consisting of granite shielding layer, air/sand distribution layer and concrete structure lay...
2018, 38(6): 1325-1332.
doi: 10.11883/bzycj-2017-0163
Abstract:
In this paper, we conducted quasi-static and dynamic tensile tests on Q235 steel at different temperatures using the Instron tensile strength tester and the split Hopkinson bar and studied the effects of temperature, strain rates and stress triaxiali...
In this paper, we conducted quasi-static and dynamic tensile tests on Q235 steel at different temperatures using the Instron tensile strength tester and the split Hopkinson bar and studied the effects of temperature, strain rates and stress triaxiali...
2018, 38(6): 1333-1343.
doi: 10.11883/bzycj-2017-0144
Abstract:
Aiming at solving the difficult problem of simulating the ejection crater and loose bulging under underground explosion, a method of vacuum chamber for simulating underground explosion effects is presented based on the similarity theory, and a testin...
Aiming at solving the difficult problem of simulating the ejection crater and loose bulging under underground explosion, a method of vacuum chamber for simulating underground explosion effects is presented based on the similarity theory, and a testin...
2018, 38(6): 1344-1352.
doi: 10.11883/bzycj-2017-0142
Abstract:
In order to study the scattering problems of SH-wave by elliptical inclusion with partial debond curve and circular cavity in half space. The method of "conformal mapping" is used to map the elliptical inclusions into circular inclusions. The displac...
In order to study the scattering problems of SH-wave by elliptical inclusion with partial debond curve and circular cavity in half space. The method of "conformal mapping" is used to map the elliptical inclusions into circular inclusions. The displac...
2018, 38(6): 1353-1363.
doi: 10.11883/bzycj-2017-0131
Abstract:
Dynamic experiments on skarn were conducted with a modified one-dimensional coupled static and dynamic loads based on SHPB device. The variations of dynamic deformation modulus of skarn under different axial pressures and frequent dynamic disturbance...
Dynamic experiments on skarn were conducted with a modified one-dimensional coupled static and dynamic loads based on SHPB device. The variations of dynamic deformation modulus of skarn under different axial pressures and frequent dynamic disturbance...
2018, 38(6): 1364-1371.
doi: 10.11883/bzycj-2017-0123
Abstract:
In order to study the penetration law of the mesoscale concrete target, The LS-DYNA software is used to simulate the penetration of rigid projectiles into two-phase concrete target. The results show that the main factors affecting the penetration res...
In order to study the penetration law of the mesoscale concrete target, The LS-DYNA software is used to simulate the penetration of rigid projectiles into two-phase concrete target. The results show that the main factors affecting the penetration res...
2018, 38(6): 1372-1377.
doi: 10.11883/bzycj-2017-0127
Abstract:
With the experimental study of underwater explosion for confined and unconfined in free field water, the characteristic parameters of explosion, such as the peak pressure of shock wave, the specific shock wave energy, the specific bubble energy, the ...
With the experimental study of underwater explosion for confined and unconfined in free field water, the characteristic parameters of explosion, such as the peak pressure of shock wave, the specific shock wave energy, the specific bubble energy, the ...
2018, 38(6): 1378-1385.
doi: 10.11883/bzycj-2017-0125
Abstract:
Based on a verified finite element model, numerical model of H beams subjected to lateral impact was established by ABAQUS. The accuracy of finite element models was validated against existing experimental results. The failure process of H beams and ...
Based on a verified finite element model, numerical model of H beams subjected to lateral impact was established by ABAQUS. The accuracy of finite element models was validated against existing experimental results. The failure process of H beams and ...
2018, 38(6): 1386-1393.
doi: 10.11883/bzycj-2017-0130
Abstract:
The load-bearing capacity and shock response of a state-of-the-art non-fracture super-zip separation device have been analyzed. Based on the static load-bearing analysis, the relationship between the meshing angle and the load-bearing capacity of the...
The load-bearing capacity and shock response of a state-of-the-art non-fracture super-zip separation device have been analyzed. Based on the static load-bearing analysis, the relationship between the meshing angle and the load-bearing capacity of the...
2018, 38(6): 1394-1403.
doi: 10.11883/bzycj-2017-0128
Abstract:
Aiming at the safety problem of existing large oil tank under near base blasting excavation, the dynamic response of large oil tank is analyzed by numerical simulation method, based on the implicit-to-explicit sequential solution procedure and the fl...
Aiming at the safety problem of existing large oil tank under near base blasting excavation, the dynamic response of large oil tank is analyzed by numerical simulation method, based on the implicit-to-explicit sequential solution procedure and the fl...
2018, 38(6): 1404-1411.
doi: 10.11883/bzycj-2017-0160
Abstract:
To find out about the wounding mechanisms of bullets penetrating human bodies, we simulated in this work the processes of bullets penetrating ballistic gelatin using the ballistic model. By taking the root mean squares of the theoretical errors of th...
To find out about the wounding mechanisms of bullets penetrating human bodies, we simulated in this work the processes of bullets penetrating ballistic gelatin using the ballistic model. By taking the root mean squares of the theoretical errors of th...
Characteristics of draging period cavity formation in liquid filling container by fragment impacting
2018, 38(6): 1412-1418.
doi: 10.11883/bzycj-2017-0188
Abstract:
To study the characteristics of the cavities formed by the fragment impacting liquid filling container, the forming process of the cavities in the liquid-filled containers was studied through numerical and experimental studies. In addition, the effec...
To study the characteristics of the cavities formed by the fragment impacting liquid filling container, the forming process of the cavities in the liquid-filled containers was studied through numerical and experimental studies. In addition, the effec...
2018, 38(6): 1419-1428.
doi: 10.11883/bzycj-2017-0209
Abstract:
To improve the calculation efficiency and describe the failure process of concrete under blast loading, a coupled SPH-FEM algorithm was used to simulate blast crater of concrete in this study. First, based on the partial Holmquist-Johnson-Cook(HJC) c...
To improve the calculation efficiency and describe the failure process of concrete under blast loading, a coupled SPH-FEM algorithm was used to simulate blast crater of concrete in this study. First, based on the partial Holmquist-Johnson-Cook(HJC) c...
2018, 38(6): 1429-1434.
doi: 10.11883/bzycj-2017-0170
Abstract:
In order to estimate the quasi-static pressure of TNT when it explodes in closed space, the calculation model of the quasi-static pressure is derived basing on the theoretical analysis. Moreover, a series of TNT's internal explosion tests are perform...
In order to estimate the quasi-static pressure of TNT when it explodes in closed space, the calculation model of the quasi-static pressure is derived basing on the theoretical analysis. Moreover, a series of TNT's internal explosion tests are perform...
2018, 38(6): 1435-1440.
doi: 10.11883/bzycj-2017-0167
Abstract:
In this paper, five kinds of hydrocarbon gaseous mixture were selected as working medium. By using high voltage spark ignition method and optical fiber probe, the propagation velocity of detonation wave in pipeline was measured near failure state con...
In this paper, five kinds of hydrocarbon gaseous mixture were selected as working medium. By using high voltage spark ignition method and optical fiber probe, the propagation velocity of detonation wave in pipeline was measured near failure state con...
