The cygro-4 fuel rod analysis computer program☆

Abstract Deformations of fuel elements depend on time, temperature, fission rate, neutron flux, total fuel fissioning, total neutron dose, and the loads applied to the element by the supports, by the coolant and by interactions between fuel and cladding. The complexity of the dependence is so great that efficient computerized analyses are required for evaluation of fuel rod designs. CYGRO-4 is a production finite element computer program for the analysis of axisymmetric deformations of the cross section of a fuel rod. Its features make it an accurate and efficient tool.