Nanoindentation simulation of concrete with various indenter forms and yield strengths

In present work, the finite element method was used to simulate the whole process of nanoindentation test. Two kinds of indenters, spherical and conical, were used to simulate indentation test of concrete. The modeling procedures were introduced in detail. The agreement between the FE calculations and experimental results is satisfactory with appropriate geometry parameters and mechanical properties of specimen materials. The indenter tip shape and the yield strength of concrete have significant effect on the accuracy of simulation results.