Autofrettage and Reautofrettage of a Spherical Pressure Vessel
- 10 March 2006
- journal article
- Published by ASME International in Journal of Pressure Vessel Technology
- Vol. 129 (1), 83-88
- https://doi.org/10.1115/1.2389020
Abstract
There is a numerical procedure for modeling autofrettage of thick-walled cylinders that incorporates the Bauschinger effect as a function of prior plastic strain and Von Mises’ yield criterion. In this paper the numerical procedure is extended to solve the analogous problem of a spherical, thick walled steel vessel. An equivalent new analytical solution for the case of a spherical vessel is also formulated. The analytical and numerical solutions are shown to be in close agreement. It is demonstrated numerically that a reautofrettage procedure, previously proposed for cylindrical vessels, may be extremely beneficial for spherical vessels. Additional commentary is provided on the limitations of certain analytic solutions.Keywords
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