Method and device for acquiring real plastic stress-strain data of metal material, terminal and storage medium

The invention belongs to the technical field of materials, and particularly relates to a metal material real plastic stress-strain data acquisition method and device, a terminal and a storage medium. Comprising the following steps: extracting basic performance parameters of materials; calculating a hardening index n of the material according to the basic performance parameters; drawing a nominal stress-strain curve of the material according to the hardening index n and the basic performance parameters of the material; according to the nominal stress-strain curve of the material, converting the nominal stress-strain curve into a real stress-strain curve of the material; and converting the real stress-strain curve of the material into a plastic real stress-strain curve of the material. Easily-obtained material basic performance parameters are used as input, calculation and conversion of a theoretical formula are combined, data obtaining is achieved, the obtained data are calculated with the performance lower li