Elastic-Plastic Analysis of Hydride Blisters in Zircaloy-2 Pressure Tubes

[+] Author and Article Information
Y. J. Kim

Sung Kyun Kwan University, Suweon, Korea

M. L. Vanderglas

Ontario Hydro Research Division, Toronto, Canada

J. Pressure Vessel Technol 110(3), 276-282 (Aug 01, 1988) (7 pages) doi:10.1115/1.3265600 History: Received May 06, 1988; Online November 05, 2009


The possibility that stresses might be produced as a consequence of expansion resulting from the transformation of zirconium to zirconium hydride in the form of blisters was investigated. Parametric elastic-plastic finite element analyses were performed because the physical properties near the blister were not clearly defined. Results show that significant stresses can arise from the volume expansion of hydride blisters, being largely compressive within the blister, tensile outside.

Copyright © 1988 by ASME
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