Thermo-mechanical Analysis of ITER Test Unit Cell under Pulse Operation

摘要

In this paper, a 3-D finite element model has been built to do thermo-mechanical analysis about an ITER test unit cell with edge-on configuration under pulse operation. In previous works, the constitutive equations of effective material properties, which are dependent on local temperature and stress, have been empirically derived. In our program, these material properties of ceramic pebble beds (lithium breeders & beryllium neutron multipliers) are implemented the model Based on current simulation results, it can provide the stress and temperature magnitude and distribution inside the blanket structure when it is under pulse radiation heating. These structural responses due to deformation of particulate materials and material thermal creep are important for assessment of thermo-mechanical behaviors and characterization of tritium release