Non-linear finite element constitutive modeling of mechanical properties of hard and superhard materials studied by indentation

Non-linear finite element constitutive m

Non-linear finite element constitutive modeling of indentation into super- and ultrahard materials: The plastic deformation of the diamond tip and the ratio of hardness to tensile yield strength of super- and ultrahard nanocomposites

✍ Maritza G.J. Veprek-Heijman; Ratko G. Veprek; Ali S. Argon; David M. Parks; Stan 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 604 KB

Using a non-linear constitutive material model for super-(H ≥ 40 GPa) and ultrahard (H ≥ 80 GPa) materials that accounts for the pressure enhancement of elastic moduli and of plastic resistance, we present the effect of plastic deformation and resultant blunting of the diamond indenter, and discuss