Elastic and plastic deformation of tubes to internal detonations and the shock waves produced by their reflection were investigated. The study included experimental measurements as well as computational modeling. Tests with stoichiometric ethylene-oxygen mixtures were performed at various initial pressures and strain was measured on thin-walled mild-steel tubes. The range of initial pressures covered the span from entirely elastic to fully plastic deformation modes. A model for the pressure load on the tube wall was developed and tested against experimental measurements. This model was applied as a boundary condition in both a single degree of freedom model of the tube cross section and a finite element model of the entire tube. Comparison of computational and experimental results showed reasonable agreement if both strain-rate and strain-hardening effects were accounted for. A unique mode of periodic radial deformation was discovered and explained through modeling as the result of flexural wave interference effects.
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ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference
July 18–22, 2010
Bellevue, Washington, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4923-1
PROCEEDINGS PAPER
Plastic Response of Thin-Walled Tubes to Detonation
J. Karnesky,
J. Karnesky
California Institute of Technology, Pasadena, CA
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J. Damazo,
J. Damazo
California Institute of Technology, Pasadena, CA
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J. E. Shepherd,
J. E. Shepherd
California Institute of Technology, Pasadena, CA
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A. Rusinek
A. Rusinek
National Engineering School of Metz (ENIM), Metz, France
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J. Karnesky
California Institute of Technology, Pasadena, CA
J. Damazo
California Institute of Technology, Pasadena, CA
J. E. Shepherd
California Institute of Technology, Pasadena, CA
A. Rusinek
National Engineering School of Metz (ENIM), Metz, France
Paper No:
PVP2010-25749, pp. 263-277; 15 pages
Published Online:
January 10, 2011
Citation
Karnesky, J, Damazo, J, Shepherd, JE, & Rusinek, A. "Plastic Response of Thin-Walled Tubes to Detonation." Proceedings of the ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASME 2010 Pressure Vessels and Piping Conference: Volume 4. Bellevue, Washington, USA. July 18–22, 2010. pp. 263-277. ASME. https://doi.org/10.1115/PVP2010-25749
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