Dynamic finite element method modeling of the upper shelf energy of precracked Charpy specimens of neutron irradiated weld metal 72W

Conference · Fri Oct 01 04:00:00 EDT 1999

OSTI ID:679480

Kumar, A S ^[1]; Sidener, S E ^[2]; Hamilton, M L ^[3]

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1. Univ. of Missouri, Rolla, MO (United States). Dept. of Nuclear Engineering
2. Westinghouse-CNFD, Columbia, SC (United States)
3. Pacific Northwest Lab., Richland, WA (United States)

Dynamic finite element modeling of the fracture behavior of fatigue-precracked Charpy specimens in both unirradiated and irradiated conditions was performed using a computer code, ABAQUS Explicit, to predict the upper shelf energy of precracked specimens of a given size from experimental data obtained for a different size. A tensile fracture-strain based method for modeling crack extension and propagation was used. It was found that the predicted upper shelf energies of full and half size precracked specimens based on third size data were in reasonable agreement with their respective experimental values. Similar success was achieved for predicting the upper shelf energy of subsize precracked specimens based on full size data.

• OSTI ID: 679480
• Report Number(s): CONF-960643--
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
CHARPY TEST
CRACK PROPAGATION
FATIGUE
FINITE ELEMENT METHOD
FRACTURE PROPERTIES
MATHEMATICAL MODELS
PHYSICAL RADIATION EFFECTS
PRESSURE VESSELS
REACTOR MATERIALS
SAMPLE PREPARATION