Calibration of Six Constitutive Material Models for Geomaterial

Recently, several constitutive material models have been developed and added to the LS-DYNA library to predict concrete geomaterial behavior. These developments were established merely from using concrete compressive strength, which limits the level of robustness in capturing actual concrete behavior. This study focuses on developing a simplified approach to calibrate six constitutive material models including Soil and Foam, Pseudo Tensor, Geological Cap Model, Concrete Damage Model Rel-3, Johnson Holmquist, and Continues Surface Cap Model against Triaxial and Hydrostatic Compression Tests (TXC and HCT) data. Comparisons between individual numerical results were performed to evaluate whether accuracy can be offered through a corresponding constitutive material model. The presented calibration method can also be applied to different geomaterials such as rock and soil.