Estimation of Material Parameters in Fracture Simulation of Concrete by Sequential Data Assimilation

Key Points

• The study aims to develop a method using sequential data assimilation to estimate material parameters in concrete fracture simulations.
• Utilized the ensemble Kalman filter for data assimilation.
• Conducted three-point bending tests on concrete beams with notches.
• Performed twin experiments to evaluate how different conditions affect the estimation accuracy of material parameters.
• Quantified the significant impact of system and observation noise settings on estimation accuracy.
• Validated the estimation of actual material parameters from experimental data.