Numerical Analysis on the Behavior of Autoclaved Aerated Concrete Block Infilled Wall Subjected to Gas Explosion

Abstract:

As a common threat to the public safety, gas explosion and its damage on structures have drawn more and more attention in the academic fields. In this paper, a series of numerical simulations are conducted to study the behavior of autoclaved aerated concrete block infilled walls under gas explosion loading. Firstly, considering the difference between the blocks and the mortar, a refined numerical model is established, and the constitutive model of Brittle Damage in LS-DYNA is hired to describe the material behaviours of both materials. Based on the laboratory material test data, the parameter of the material model are selected reasonably. Then, massive numerical calculation is carried out and the dynamic response of autoclaved aerated concrete block infilled walls is captured and discussed. At last, the anti-blast ability of block infilled walls is compared with that of clay infilled wall of the same thickness. It is found that the anti-blast ability of block infilled walls is weaker than the clay infilled walls for the difference of material density and boundary conditions.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 259-265
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.259
• Online since: January 2015
• Authors: Wen Xuan Xu*, Qi Bao, Zhan Li, Jun Yu Fan
• Keywords: Autoclaved Aerated Concrete Block, Dynamic Response, Gas Explosion, Infilled Walls, Numerical Analysis

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