2023 Vol. 43, No. 11

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Cover
2023, 43(11)
Abstract:
2023, 43(11): 1-2.
Abstract:
Explosion Physics
Analysis of the dynamic response of prestressed concrete frame structures under blast load
SI Doudou, PAN Zuanfeng, ZENG Bin, ZHANG Haipeng, GAO Yukui
2023, 43(11): 112201. doi: 10.11883/bzycj-2023-0080
Abstract:
To study the anti-blast performance of prestressed concrete (PC) frame structure, the dynamic response of a 3-story 2-span long-span bonded/unbonded PC frame structure under the action of external remote blast loads of different scaled distances was ...
Failure modes of precast segmental concrete-filled double-skin steel tube columns under large equivalent explosion
XIA Mengtao, LI Minghong, ZONG Zhouhong, GAN Lu, HUANG Jie, LI Zhuo
2023, 43(11): 112202. doi: 10.11883/bzycj-2022-0385
Abstract:
In order to improve the blast resistant performance of prefabricated highway bridges, a precast segmental concrete-filled double-skin steel tube (PS-CFDST) column was developed. A large equivalent field blast test on the PS-CFDST columns was conducte...
Dynamic response and parameter analysis of concrete-filled steel tubular structure under lateral impact loading
JIANG Shan, LU Guoyun, YANG Huiwei
2023, 43(11): 112203. doi: 10.11883/bzycj-2023-0039
Abstract:
By employing the mode approximation method for rigid-plastic structural dynamic behavior and numerical simulation, a dynamic response analysis was conducted on circular-section concrete-filled steel tubular (CFST) structures subjected to lateral impa...
Damage effects of clamped square plates by near-field underwater explosion with complex boundary conditions
DENG Shuo, LAI Zhichao, QIN Jian, MENG Xiangyao, CHI Hui, HUANG Ruiyuan
2023, 43(11): 112204. doi: 10.11883/bzycj-2023-0164
Abstract:
Near-field underwater explosion produces complex loading patterns, and complex boundary conditions make the damage patterns of structures under near-field underwater explosion more difficult to predict. Thus, the investigation on the evolution of und...
Detonation driving energy release characteristics of laminated composite charge of DNTF-based aluminized explosivesbased on cylinder tests
SHEN Fei, WANG Hui, WANG Jintao, YU Wenli, WANG Xuanjun
2023, 43(11): 112301. doi: 10.11883/bzycj-2023-0085
Abstract:
To investigate the releasing characteristics of detonation-driving energy in a laminated composite charge, a meticulously prepared composite charge of two distinct types of 3,4-dinitrofurazanfuroxan (DNTF) based explosives with uniform layer thicknes...
Impact Dynamics
Dynamic fragmentation of oxygen-free high-conducting copper under Mach stem loading
YE Chuanbing, DUAN Zhiwei, LI Xuhai, WANG Xi, PAN Hao, YU Yuying, HU Jianbo
2023, 43(11): 113101. doi: 10.11883/bzycj-2023-0172
Abstract:
To in-depth understand the dynamic fracture behaviors of metal materials under complex loading, based on the finite element simulation, two types of Mach stem loading experiments were designed and carried out to investigate the dynamic fragmentation ...
Deformation behavior of curved structures with negative Poisson’s ratio under diverse loading velocities
LUO Weihong, HE Wanqing, WU Wenjun, LI Shiqiang, WANG Zhiyong
2023, 43(11): 113102. doi: 10.11883/bzycj/2022-0520
Abstract:
High-porosity structures with negative Poisson’s ratio often experience severe stress fluctuations and significant peak stresses during energy absorption, which can easily cause local damage to the honeycomb structure and affect continuous energy abs...
Strain rate effect on crack propagation and fragmentation characteristics of red sandstone containing pre-cracks
WEN Lei, FENG Wenjie, LI Mingye, KOU Zilong, WANG Liang, YU Junhong
2023, 43(11): 113103. doi: 10.11883/bzycj-2023-0061
Abstract:
In this experiment, finite size red sandstone containing pre-existing single crack was taken as the research object. The ratio of length to width of the samples was set about 0.65. The inclination angle of the pre-crack includes 0°, 30°, 45°, 60° and...
Experimental study on high-velocity oblique water entry ofa trans-media vehicle with tail-skirt
LIU Xiyan, YUAN Xulong, LUO Kai, QI Xiaobin, LU Na
2023, 43(11): 113301. doi: 10.11883/bzycj-2022-0509
Abstract:
To study the cavity development and motion characteristics of the trans-media vehicle with tail-skirt during the process of oblique water entry at high velocity, a high-speed water-entry experiment at platform was built, and an experimental model wit...
Experimental Techniques & Numerical Methods
A calculation method for the minimum thickness of a foam concrete distribution layer under blast load
YANG Ya, KONG Xiangzhen, FANG Qin, GAO Chu
2023, 43(11): 114201. doi: 10.11883/bzycj-2023-0047
Abstract:
In order to study the design thickness of the foam concrete distribution layer under blast load, the numerical model of one-dimensional blast wave propagation in foam concrete was established based on the LS-DYNA software, which was verified by compa...
Numerical modeling and application of shock wave of free-field air explosion
ZHANG Yunfeng, CHEN Bo, WEI Xin, LI Hao, WU Ke, SUI Yaguang, FANG Long
2023, 43(11): 114202. doi: 10.11883/bzycj-2023-0004
Abstract:
In order to establish an empirical formula to describe the pressure, density and particle velocity of the blast wave at any time and distance in free field, and to support the theoretical calculation of shock wave loading in complex scenarios, the pr...
A study of the design and calculation method of double-skin steel-concrete shield based on energy approach
WANG Wu, YANG Jun, WANG Anbao, ZHOU Bukui, LI Xiaojun
2023, 43(11): 114203. doi: 10.11883/bzycj-2023-0086
Abstract:
The calculation method of double-skin steel-concrete shield based on the energy method is discussed. Under the premise of a rigid projectile, the main structures that affect the energy dissipation of projectile penetration are front and rear steel pl...
Applied Explosion Mechanics
Absorption characteristics of methane-air mixture explosion energyby foam metal with a corrugated surface against explosion
ZHANG Baoyong, TAO Jin, CUI Jiarui, ZHANG Yiyu, WANG Yajun, HAN Yonghui, SUN Man
2023, 43(11): 115401. doi: 10.11883/bzycj-2023-0084
Abstract:
To further explore the energy absorption characteristics of the foamed metal with the explosion-facing surface structure different from that of its base subjected to a gas explosion, based on the previous experiments carried on the energy absorption ...
Prediction of natural gas explosion overpressure considering external turbulence
LI Yanchao, LIANG Bo, JIANG Yuting
2023, 43(11): 115402. doi: 10.11883/bzycj-2023-0098
Abstract:
Natural gas is an important energy material for national development, but its hazardous properties lead to frequent explosion accidents. In order to pre-evaluate the maximum overpressure of natural gas explosion under the condition with external turb...