TY - JOUR
T1 - Mitigating ground shocks with cellular solids
AU - Zhou, H.
AU - Zhao, Z.
AU - Ma, Guowei
PY - 2013
Y1 - 2013
N2 - Underground structures are sometimes threatened by ground shocks induced by subsurface detonations. This paper proposes one possible method to mitigate the subsurface blasts by attaching a cladding consisting of a face sheet and cellular solid core to the exterior of the structure; the cellular core is foam made from relatively strong materials, such as metal or concrete, rather than typical geofoam made from polymer. A simplified model is established to distinguish three scenarios to delineate the dynamic behavior of a foam cladding subjected to a ground shock. The model compares the velocity time histories of the face sheet and the surrounding soil, in which the foam crushing velocity is not high and the foam is densified uniformly. Further, the governing equations for possible high-velocity foam crushing are established, with progressive collapse as foam crushing mode when alleviating subsurface blasts. © 2013 American Society of Civil Engineers.
AB - Underground structures are sometimes threatened by ground shocks induced by subsurface detonations. This paper proposes one possible method to mitigate the subsurface blasts by attaching a cladding consisting of a face sheet and cellular solid core to the exterior of the structure; the cellular core is foam made from relatively strong materials, such as metal or concrete, rather than typical geofoam made from polymer. A simplified model is established to distinguish three scenarios to delineate the dynamic behavior of a foam cladding subjected to a ground shock. The model compares the velocity time histories of the face sheet and the surrounding soil, in which the foam crushing velocity is not high and the foam is densified uniformly. Further, the governing equations for possible high-velocity foam crushing are established, with progressive collapse as foam crushing mode when alleviating subsurface blasts. © 2013 American Society of Civil Engineers.
U2 - 10.1061/(ASCE)EM.1943-7889.0000585
DO - 10.1061/(ASCE)EM.1943-7889.0000585
M3 - Article
VL - 139
SP - 1362
EP - 1371
JO - JOURNAL OF ENGINEERING MECHANICS-ASCE
JF - JOURNAL OF ENGINEERING MECHANICS-ASCE
SN - 0733-9399
IS - 10
ER -