The Sharp Indentation for Identifying Constitutive Relationship of Metallic Materials
Based on a series of tests and elastic-plastic contact finite element analyses, a sharp indentation method for predicting the constitutive relationship of metallic materials was presented. Dependent on the dimensionless linear relationship which is independent of the hardening index n, a forecasting formula of constitutive parameters can be gotten and its form is much terser. The test results and finite element calculations show that, the predicted stress-strain curves are in agreement with the uniaxial tensile test results. The validity and precision of this method was certified by in-dentation tests on kinds of different materials.
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
B. Yao et al., "The Sharp Indentation for Identifying Constitutive Relationship of Metallic Materials", Applied Mechanics and Materials, Vols. 117-119, pp. 101-107, 2012