查看文章

The aim of the present study is to explore the combination of a biaxial test with a cruciform specimen and the virtual fields method to develop an efficient strategy for simultaneous identification of material parameters related with hardening and anisotropy in plasticity. In a first step, three cruciform geometries are evaluated as potential candidates to generate an experimental database for the calibration of the classical Hill’48 yield criterion and Swift’s hardening law. In a second step, the geometry with the best results is used to calibrate YLD2000-2d yield criterion and Swift’s hardening law. Numerical results are used as virtual experimental full-field measurements, which allows the comparison of the identified solution with the input material parameters. The accuracy of the identified material parameters is thoroughly assessed through the analysis of flow stress curve evolution, normalised yield stresses and plastic …