This study employs a damage-plasticity constitutive model to characterize the complex nonlinear mechanical behavior of high-strength grout materials used in offshore wind turbine grouted connections. Integrated with the finite element method within Abaqus/Explicit, the model is utilized to perform detailed three-dimensional numerical simulations investigating the structural response under both axial compression and combined compression-bending loading conditions. The simulation results demonstrate a strong agreement with experimental data, accurately capturing key failure mechanisms, load-displacement responses, and ultimate capacities. Specifically, the model successfully reproduces shear-dominated failure under axial compression and tension-dominated failure under combined bending. The study confirms the efficacy of the implemented damage-plasticity model and validates the capability of the established finite element framework to reliably predict the mechanical performance of grouted connections under various operational loading scenarios.
Wang et al. (Sun,) studied this question.