Implication of elastic stress range at structural discontinuity
Journal Article
·
· J. Pressure Vessel Technol.; (United States)
This paper illustrates that in addition to the elastic stress intensity range it is necessary to evaluate the stress intensities (and corresponding material properties) at specific times during a postulated thermal transient to characterize inelastic response at a structural discontinuity. The specific case of an austenitic flued head operating in a temperature range of 600 to 1050/sup 0/F (316 to 538/sup 0/C) is used to calculate ratcheting strain accumulation due to cyclic primary and secondary loads. Detailed inelastic analyses were performed to evaluate two designs. Both designs have essentially the same stress intensity range; however, only the design with lower stress intensity during steady-state elevated temperature operation satisfied the ASME Code Case N-47 strain accumulation limits.
- Research Organization:
- Alcoa Technical Center, Alcoa Center, Pa.
- OSTI ID:
- 5122698
- Journal Information:
- J. Pressure Vessel Technol.; (United States), Journal Name: J. Pressure Vessel Technol.; (United States) Vol. 106:4; ISSN JPVTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
CALCULATION METHODS
CONTAINERS
DYNAMIC LOADS
ELASTICITY
ENERGY TRANSFER
FUNCTIONS
HEAT TRANSFER
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
PRESSURE VESSELS
RESPONSE FUNCTIONS
STANDARDS
STEELS
STRAINS
STRESS ANALYSIS
STRESS INTENSITY FACTORS
STRESSES
TENSILE PROPERTIES
TRANSIENTS
220200* -- Nuclear Reactor Technology-- Components & Accessories
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
CALCULATION METHODS
CONTAINERS
DYNAMIC LOADS
ELASTICITY
ENERGY TRANSFER
FUNCTIONS
HEAT TRANSFER
HIGH TEMPERATURE
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
PRESSURE VESSELS
RESPONSE FUNCTIONS
STANDARDS
STEELS
STRAINS
STRESS ANALYSIS
STRESS INTENSITY FACTORS
STRESSES
TENSILE PROPERTIES
TRANSIENTS