Numerical simulation for cone indentation of metallic foams and the reverse analysis
泡沫金属压痕试验的数值模拟及其反演

Indentation testing is a popular method used to determine the mechanical properties of materials. In this paper, finite element simulations are carried out for cone indentation of metallic foams with 80 different material parameters. The numerical results combined with the dimensionless analysis method are used to establish the relationship between the cone indentation behavior and the elastoplastic material parameters of metallic foams. Based upon the relationship, a reverse analysis is developed so that the elastoplastic properties of metallic foams can be extracted from the cone indentation data. Obtained results show that the Young's modulus, yield strength, and plastic compression coefficient of metallic foams can be unambiguously determined by the developed reverse method. However, some supplement information is needed in order to evaluate the densification strain.