DYMAT 2009
Volume 1, 2009
DYMAT 2009 - 9th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) 847 - 853
Section Industrial Applications
Published online 15 September 2009
DYMAT 2009 (2009) 847-853
DOI: 10.1051/dymat/2009118

Dynamic response of a steel tube to blast

J. Malachowski

Military University of Technology, 00-908 Warsaw, Gen. Sylwestra Kaliskiego 2, Poland

Published online: 15 September 2009

This analysed case has been inspired by security concerns to ensure safe utilization of pipeline systems used for gas and crude oil transportation. Compromised pipeline security often results from terrorist threat and warfare activities, especially in regions that are of significant value for the world's energy supplies. Computational mechanics methods used in this research seem to be equally applicable to such events as disturbances in routine pipelines operation by seismic or mining activities, as they also require similar shock wave analysis for possible damage assessment of the affected pipelines. In our computational trials the tested pipe elements were charged with different high explosives. To describe viscous effects which take a place in metals subjected to very short impacts loads the Johnson-Cook model was adopted. The tests confirmed characteristic damages in the form of pieces of metal cut out from the pipe's structure. These pieces of metal represent geometric shapes of cubes of the detonation material. In practice, every instance given consideration confirms that putting any explosive directly on the pipe wall results in permanent deformation of local range which means cutting some element out of the pipe wall.

© EDP Sciences 2009