Influence of specimen design on the deformation and failure of zircaloy cladding

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Experimental as well as computational analyses have been used to examine the deformation and failure behavior of ring-stretch specimens of Zircaloy-4 cladding tubes. The results show that, at least for plastically anisotropic unirradiated cladding, specimens with a small gauge length l to width w ratio (l/w {approx} 1) exhibit pronounced non-uniform deformation along their length. As a result, specimen necking occurs upon yielding when the specimen is fully plastic. Finite element analysis indicates a minimum l/w of 4 before a significant fraction of the gauge length deforms homogeneously. A brief examination of the contrasting deformation and failure behavior between uniaxial ... continued below

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12 p.

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Bates, D. W.; Koss, D. A.; Motta, A. T. & S., Majumdar February 17, 2000.

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Description

Experimental as well as computational analyses have been used to examine the deformation and failure behavior of ring-stretch specimens of Zircaloy-4 cladding tubes. The results show that, at least for plastically anisotropic unirradiated cladding, specimens with a small gauge length l to width w ratio (l/w {approx} 1) exhibit pronounced non-uniform deformation along their length. As a result, specimen necking occurs upon yielding when the specimen is fully plastic. Finite element analysis indicates a minimum l/w of 4 before a significant fraction of the gauge length deforms homogeneously. A brief examination of the contrasting deformation and failure behavior between uniaxial and plane-strain ring tension tests further supports the use of the latter geometry for determining cladding failure ductility data that are relevant to certain reactivity-initiated accident conditions.

Physical Description

12 p.

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INIS; OSTI as DE00751922

Medium: P; Size: 12 pages

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  • International Topical Meeting on Light Water Reactor Fuel Performance, Park City, UT (US), 04/10/2000--04/13/2000

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  • Report No.: ANL/ET/CP-101138
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 751922
  • Archival Resource Key: ark:/67531/metadc705456

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • February 17, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2017, 8:21 p.m.

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Bates, D. W.; Koss, D. A.; Motta, A. T. & S., Majumdar. Influence of specimen design on the deformation and failure of zircaloy cladding, article, February 17, 2000; Illinois. (digital.library.unt.edu/ark:/67531/metadc705456/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.