Dynamic Plastic Deformation of Circular Cylindrical Shells

[+] Author and Article Information
C. K. Youngdahl

Engineering and Technology Division, Argonne National Laboratory, Argonne, Ill.

J. Appl. Mech 39(3), 746-750 (Sep 01, 1972) (5 pages) doi:10.1115/1.3422783 History: Received January 01, 1971; Revised October 01, 1971; Online July 12, 2010


In order to determine the localized plastic deformation of a pipe or tube produced by a dynamic loading that exceeds the yield load only briefly, it is important to know the effect of the spatial and temporal shapes of the pressure pulse on the final deformation. This is particularly true in computer or laboratory simulations of reactor accidents, where it is impossible or impractical to reproduce the actual loading conditions. It is shown that the dynamic plastic deformation produced by an arbitrary load shape (spatial) and an arbitrary pulse shape (temporal) can be correlated by three parameters—the impulse, a load-shape parameter, and a pulse-shape parameter. These parameters are defined in terms of integrals of the pressure and are consequently insensitive to inaccuracies in experimental measurements.

Copyright © 1972 by ASME
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