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Type: Journal article
Title: Mitigation of blast effects on aluminum foam protected masonry walls
Author: Su, Y.
Wu, C.
Griffith, M.
Citation: Tianjin University. Transactions, 2008; 14(SUPPL):558-562
Publisher: Tianjin Daxue
Issue Date: 2008
ISSN: 1006-4982
Statement of
Yu Su, Chengqing Wu and Mike Griffith
Abstract: Terrorist attacks using improvised explosive devices (IED) can result in unreinforced masonry (URM) wall collapse. Protecting URM wall from IED attack is very complicated. An effective solution to mitigate blast effects on URM wall is to retrofit URM walls with metallic foam sheets to absorb blast energy. However, mitigation of blast effects on metallic foam protected URM walls is currently in their infancy in the world. In this paper, numerical models are used to simulate the performance of aluminum foam protected URM walls subjected to blast loads. A distinctive model, in which mortar and brick units of masonry are discritized individually, is used to model the performance of masonry and the contact between the masonry and steel face-sheet of aluminum foam is modelled using the interface element model. The aluminum foam is modelled by a nonlinear elastoplastic material model. The material models for masonry, aluminum foam and interface are then coded into a finite element program LS-DYNA3D to perform the numerical calculations of response and damage of aluminum foam protected URM walls under airblast loads. Discussion is made on the effectiveness of the aluminum foam protected system for URM wall against blast loads.
Keywords: mitigation; blast loads; aluminium foam; masonry
RMID: 0020083808
DOI: 10.1007/s12209-008-0096-5
Appears in Collections:Civil and Environmental Engineering publications

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