Effect of peak thermal strain on simplified ratchetting analysis procedures

Conference · Sun Jan 01 00:00:00 EST 1989

OSTI ID:6108286

Sartory, W K

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.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6108286
• Report Number(s): CONF-890721-15; ON: DE89008745; TRN: 89-016426
• Resource Relation: Conference: Joint ASME/JSME pressure vessel and piping conference, Honolulu, HI, USA, 23 Jul 1989; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
REACTOR COMPONENTS
THERMAL STRESSES
NUMERICAL ANALYSIS
MECHANICAL PROPERTIES
RATCHETING
STRAINS
STRESS ANALYSIS
TEMPERATURE EFFECTS
DEFORMATION
MATHEMATICS
STRESSES
220200* - Nuclear Reactor Technology- Components & Accessories
990230 - Mathematics & Mathematical Models- (1987-1989)