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Shock and Vibration
Volume 20 (2013), Issue 1, Pages 19-28
http://dx.doi.org/10.3233/SAV-2012-0722

Modelling and Dynamic Response of Steel Reticulated Shell under Blast Loading

Ximei Zhai1 and Yonghui Wang2

1School of Civil Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China
2Department of Civil and Environmental Engineering, National University of Singapore, Singapore

Received 30 November 2011; Revised 31 March 2012

Copyright © 2013 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Explicit finite element programme LS-DYNA was used to simulate a long-span steel reticulated shell under blast loading to investigate the structural dynamic responses in this paper. The elaborate finite element model of the Kiewitt-8 single-layer reticulated shell with span of 40 m subjected to central blast loading was established and all the process from the detonation of the explosive charge to the demolition, including the propagation of the blast wave and its interaction with structure was reproduced. The peak overpressure from the numerical analysis was compared with empirical formulas to verify the credibility and applicability of numerical simulation for blast loading. The dynamic responses of the structure under blast loading with different TNT equivalent weights of explosive and rise-span ratios were obtained. In addition, the response types of Kiewitt-8 single-layer reticulated shell subjected to central explosive blast loading were defined.