Thermoplastic analysis of a sphere-pac fuel pin Academic Article uri icon


  • This analysis is concerned with the thermomechanical response of a sphere-pac fuel pin. The fuel is modeled as an elastic-plastic continuum governed by the Mohr-Coulomb yield criterion and associated flow rule under plane strain conditions. Yielding is found to initiate at the outer edge of the fuel, and a plastic zone progresses inward. When the fuel has completely yielded, there exist three distinct plastic zones corresponding to stress states on different facets of the yield surface. Closed form expressions for the displacement and stresses in each of the plastic zones are presented. Numerical results illustrating the variation of displacement and stress with radial position are given. 1983.

published proceedings

  • Nuclear Engineering and Design

author list (cited authors)

  • Kennedy, T. C., George, T. L., & Peddicord, K. L.

citation count

  • 2

complete list of authors

  • Kennedy, TC||George, TL||Peddicord, KL

publication date

  • April 1983