Numerical simulation of the direct thermo-mechanical coupling of temperature field and stress field during the 7075 aluminium alloy plate's quenching process is investigated and the distribution tendency of residual stress is acquired.Numerical simulation of the elimination effect of varying stretching rates on the residual stress in the stretching process is carried out based on isotropic hardening Mises yield criterion and Prandtl-Reuss plastic flow rule with incremental theory.Then blind hole method is a...