Los Alamos Failure Model (LAFM): a code for the prediction of LMFBR fuel pin failure
- 1 February 1978
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
A new fuel pin failure model (the Los Alamos Failure Model) has been developed, a preliminary version of which is reported in this document. The model treats pin failure due to fuel-cladding differential thermal expansion, fission-gas pressurization, and cladding thermal stress. Radial fuel cracking and crack closure, as well as the presence of an initial circumferential fuel crack, are accounted for. The elastic-plastic stress-strain behavior of the cladding is calculated with a single node representation of the cladding using the Tresca Yield criterion. This results in a very fast running computer code with small storage requirements.Keywords
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