TY - GEN
T1 - Influence of soft interlayer in concrete sandwich panel on propagation characteristics of plane explosive wave
AU - Dong, Yongxiang
AU - Feng, Shunshan
AU - Duan, Xiangjie
AU - Xiao, Lixing
PY - 2011
Y1 - 2011
N2 - The propagation characteristics and laws of concrete sandwich with foam soft interlayer under contact explosion were studied by numerical simulation. Based on a reasonable choice of the constitutive model and physical parameters by numerical methods, the plane blast wave propagation features of the concrete structure are illustrated, including the stress wave propagation and attenuation, space-time evolution of damage and wave reflection and transmission at layered interfaces, and the total energy distribution in various medium layers. The structural failure and destruction of two-dimensional dynamic process was reproduced by numerical computation. Meanwhile, it is pointed out that the role of soft interlayer in concrete sandwich structure is mainly by its low wave impedance, the waveform of incident wave is changed and stress wavelength is pull wide, the radial diffusion of energy is enhanced and the amplitude of impulse and energy inputting the third layer is reduced, thus as a result the protective performance of overall concrete sandwich structure is improved.
AB - The propagation characteristics and laws of concrete sandwich with foam soft interlayer under contact explosion were studied by numerical simulation. Based on a reasonable choice of the constitutive model and physical parameters by numerical methods, the plane blast wave propagation features of the concrete structure are illustrated, including the stress wave propagation and attenuation, space-time evolution of damage and wave reflection and transmission at layered interfaces, and the total energy distribution in various medium layers. The structural failure and destruction of two-dimensional dynamic process was reproduced by numerical computation. Meanwhile, it is pointed out that the role of soft interlayer in concrete sandwich structure is mainly by its low wave impedance, the waveform of incident wave is changed and stress wavelength is pull wide, the radial diffusion of energy is enhanced and the amplitude of impulse and energy inputting the third layer is reduced, thus as a result the protective performance of overall concrete sandwich structure is improved.
KW - Explosive wave
KW - Numerical simulation
KW - Sandwich panel
KW - Soft interlayer
KW - Wave impedance
UR - http://www.scopus.com/inward/record.url?scp=79959796631&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.255-260.2370
DO - 10.4028/www.scientific.net/AMR.255-260.2370
M3 - Conference contribution
AN - SCOPUS:79959796631
SN - 9783037851395
T3 - Advanced Materials Research
SP - 2370
EP - 2374
BT - Advances in Civil Engineering
T2 - 2011 International Conference on Civil Engineering and Building Materials, CEBM 2011
Y2 - 29 July 2011 through 31 July 2011
ER -