A platform for research: civil engineering, architecture and urbanism
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Dynamic Fracture of Cellular Cementitious Plates under Blast/Shock Loading
The response of cellular cementitious flat plates of circular shape, with or without additives to shock wave loading, has been investigated experimentally in the CCNY Shock Tube Research Facility. Cementitious cellular foam plates with and without polypropylene fiber reinforcement, were tested. The traveling shock wave generated by the rupture of an aluminum diaphragm exits the shock tube, and subsequently expands and impacts the specimen in the form of blast wave. This interaction generates a reflection of the incoming shock wave propagating in the opposite direction and, at the same time, triggers waves within the cementitious specimen which eventually initiate the appearance of cracks. The experiments have indicated that the cellular plates develop cracks initially in the radial direction which then branch out into irregular directions leading to the break of the plates. These cracks start at the high-stress concentration region close to the center or are aligned with pre-existing cracks.
Dynamic Fracture of Cellular Cementitious Plates under Blast/Shock Loading
The response of cellular cementitious flat plates of circular shape, with or without additives to shock wave loading, has been investigated experimentally in the CCNY Shock Tube Research Facility. Cementitious cellular foam plates with and without polypropylene fiber reinforcement, were tested. The traveling shock wave generated by the rupture of an aluminum diaphragm exits the shock tube, and subsequently expands and impacts the specimen in the form of blast wave. This interaction generates a reflection of the incoming shock wave propagating in the opposite direction and, at the same time, triggers waves within the cementitious specimen which eventually initiate the appearance of cracks. The experiments have indicated that the cellular plates develop cracks initially in the radial direction which then branch out into irregular directions leading to the break of the plates. These cracks start at the high-stress concentration region close to the center or are aligned with pre-existing cracks.
Dynamic Fracture of Cellular Cementitious Plates under Blast/Shock Loading
Jahnke, Doug (author) / Jin, Weihua (author) / Andreopoulos, Yiannis (author)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 962-970
2013-06-18
Conference paper
Electronic Resource
English
Wave propagation , Poroelasticity , Blast loads , Cement , Mechanics , Cracking , Simulation , Porous media , Plates , Porosity
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