Abstract: On the basis of the part-disc indirect coupling method, the full-disc indirect coupling model, the symmetry features of the structure of brake disc and symmetry constraints applied during the stress calculation are taken into account, the elastic-plastic thermo-mechanical coupling contact models including brake disc, pad and hub is established, so that the relative movement between the brake disc and pad is realized. The model can become the interaction and direct coupling simulation between temperature fields and stress fields. By the comparison of the simulation results and the experimental results, it can be concluded that the simulated distributions of the temperature and stress fields of brake disc is consistent with the actual distributions during braking. The formation of hot spots on the brake disc during broking is investigated by using the elastic-plastic thermo-mechanical coupling method.

Key words: Brake disc, Elastic-plastic thermal-mechanical coupling, Hot spot