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The influence of structural arrangement on long-duration blast response of annealed glazing

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journal contribution
posted on 03.09.2018, 12:42 authored by Robert V. Johns, Simon Clubley
This paper investigates the influence of structural arrangement on long-duration blast loaded annealed glazing via variable thickness, area, aspect ratio and edge support conditions. Initially, the findings of eighteen full-scale air-blast trials employing 33 annealed glazing panels are reported where it is demonstrated that fracture mode and fragmentation are a strong function of edge supports. Rigidly clamped edges are shown to induce localised stress transmission, producing significant cracking and small fragments. In contrast, elastic edges are shown to produce large, angular fragments, demonstrating the importance of accurately modelling edge conditions when analysing fragment hazard. Quantification of peak centre panel deflection and breakage time is then presented where variable results indicate the influence of edge supports and aspect ratio to be dependent on proximity to the threshold area as a function of glazing thickness. An initial Applied Element Method (AEM) analysis is then employed to model the influence of structural arrangement on long-duration blast-loaded annealed glazing. AEM models are shown to reasonably predict glazing fragmentation behaviour, breakage time and peak panel deflection at the moment of breakage. Thus indicating AEM's potential suitability to provide a predictive capacity for annealed glazing response during long-duration blast.

Funding

The authors wish to thank the UK EPSRC and AWE plc for financial support.

History

School

  • Architecture, Building and Civil Engineering

Published in

International Journal of Solids and Structures

Volume

97_98

Pages

370 - 388

Citation

JOHNS, R.V. and CLUBLEY, S.K., 2016. The influence of structural arrangement on long-duration blast response of annealed glazing. International Journal of Solids and Structures, 97-98, pp.370-388.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

06/07/2016

Publication date

2016-07-09

Notes

This paper was published in the journal International Journal of Solids and Structures and the definitive published version is available at https://doi.org/10.1016/j.ijsolstr.2016.07.012.

ISSN

0020-7683

Language

en