The effects of camouflets on subgrade surface support

✍ Scribed by J.W. Bull; C.H. Woodford

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 179 KB
• Volume: 73
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(98)00264-8

✦ Synopsis

The numerical modelling of an explosively formed camou¯et is described and discussed. A uniform pressure was applied to the air/ground interface above the camou¯et. 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 camou¯et was dicult to detect. However, in some cases it was possible to identify the surface point above the centre of the camou¯et. In load cases where loose fallback of the subgrade can be identi®ed, increased surface de¯ections were evident and it was possible for an assessment to be made of the camou¯et diameter. Further analysis of the results allowed the inherent instability of the camou¯et to be identi®ed. Suggestions are made over which camou¯ets are the most unstable.