Effect of peak thermal strain on simplified ratchetting analysis procedures

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Omission of peak strain in the O'Donnell-Porowski simplified ratchetting rules of ASME Code Case N-47, which governs design of elevated-temperature nuclear components, can lead to nonconservatism. The O'Donnell-Porowski method is therefore modified in this paper to include peak strain. The revised technique eliminates nonconservatism that was originally found in comparing the simplified rules with the results of two- and three-dimensional analyses and that was used as a basis for restricting the O'Donnell-Porowski method to one-dimensional geometries. Since the new method is found to be conservative in all the one-, two-, and three-dimensional problems in which it is has been tested, ... continued below

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Pages: 25

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Sartory, W.K. January 1, 1989.

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Omission of peak strain in the O'Donnell-Porowski simplified ratchetting rules of ASME Code Case N-47, which governs design of elevated-temperature nuclear components, can lead to nonconservatism. The O'Donnell-Porowski method is therefore modified in this paper to include peak strain. The revised technique eliminates nonconservatism that was originally found in comparing the simplified rules with the results of two- and three-dimensional analyses and that was used as a basis for restricting the O'Donnell-Porowski method to one-dimensional geometries. Since the new method is found to be conservative in all the one-, two-, and three-dimensional problems in which it is has been tested, it is under consideration by the code for inclusion in N-47 without restriction as to dimensionality. 7 refs., 5 figs., 2 tabs.

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Pages: 25

Notes

NTIS, PC A03/MF A01 - OSTI; 1.

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  • Joint ASME/JSME pressure vessel and piping conference, Honolulu, HI, USA, 23 Jul 1989

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  • Other: DE89008745
  • Report No.: CONF-890721-15
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 6108286
  • Archival Resource Key: ark:/67531/metadc1113714

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Office of Scientific & Technical Information Technical Reports

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

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  • January 1, 1989

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  • Feb. 22, 2018, 7:45 p.m.

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  • May 18, 2018, 6:56 p.m.

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Sartory, W.K. Effect of peak thermal strain on simplified ratchetting analysis procedures, article, January 1, 1989; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1113714/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.