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Effects of camouflets on subgrade surface support

Lookup NU author(s): Dr John Bull, Dr Chris Woodford

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Abstract

The numerical modelling of an explosively formed camouflet is described and discussed. A uniform pressure was applied to the air/ground interface above the camouflet. Nine variations of subgrade strengths were considered as nine separate load cases. The computer results showed that for load cases where there was no observable air/ground subgrade disturbance, the camouflet was difficult to detect. However, in some cases it was possible to identify the surface point above the centre of the camouflet. In load cases where loose fallback of the subgrade can be identified, increased surface deflections were evident and it was possible for an assessment to be made of the camouflet diameter. Further analysis of the results allowed the inherent instability of the camouflet to be identified. Suggestions are made over which camouflets are the most unstable.

Publication metadata

Author(s): Woodford CH; Bull JW

Publication type: Article

Publication status: Published

Journal: Computers and Structures

Year: 1999

Volume: 73

Issue: 1-5

Pages: 315-325

Print publication date: 11/11/1999

ISSN (print): 0045-7949

ISSN (electronic): 1879-2243

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/S0045-7949(98)00264-8

DOI: 10.1016/S0045-7949(98)00264-8

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