Mathematical modeling of contact interaction of fuel elements with considering the creep using the mortar method

The paper considered the algorithm for solving axisymmetric contact problems of thermoelasticity, taking into account the processes of creep. Mortar-method used to account for contact interaction, to solve the resulting system of linear equations the modied symmetric successive over-relaxation method (MSSOR) was applied. The results of applying the proposed algorithm to a demonstration problem that simulates thermomechanical processes in a section of a fuel element that includes from 2 to 10 fuel pellets are presented.