The mechanical behavior and reliability prediction of the HTR graphite component at various temperature and neutron dose ranges

•The mechanical behavior of graphite component in HTRs under high temperature and neutron irradiation conditions is simulated.•The computational process of mechanical analysis is introduced.•Deformation, stresses and failure probability of the graphite component are obtained and discussed.•Various temperature and neutron dose ranges are selected in order to investigate the effect of in-core conditions on the results.