Determination of elastoplastic properties in anisotropic materials with cubic symmetry by instrumented indentation

Multi-dimensional finite element modelings of instrumented sharp indentation on materials with cubic symme-try are conducted. A novel reverse analysis algorithm for identifying elastoplastic properties is established for the cubic material, while the anisotropy of the material is determined by indentations on distinct orientations. Influences of elastic anisotropy and anisotropic yielding behavior are considered with the help of three-dimensional computations. Sensitivity analysis confirms the accuracy and robustness of the new method. The obtained results are compared and verified with experimental data of a nickel-base single crystal alloy.

Automated summary

This research conducts multi-dimensional finite element modelings to investigate the effects of instrumented sharp indentation on materials with cubic symmetry. A novel reverse analysis algorithm is established to identify the elastoplastic properties of the cubic material, while the anisotropy of the material is determined through indentations on different orientations. The influences of elastic anisotropy and anisotropic yielding behavior are considered using three-dimensional computations. Sensitivity analysis confirms the accuracy and robustness of the new method, and the obtained results are compared and verified with experimental data of a nickel-base single crystal alloy.