Automatic Calibration Tool for Efficient Parameter Optimization of SANISAND Models under Cyclic Loading
Publication: Geo-Congress 2024
ABSTRACT
Constitutive modeling of cyclic liquefaction is challenging due to the complex soil behavior under cyclic loading. Aside from the predictive capability of the constitutive model, precise calibration of the model parameters is critical to accurately simulate the soil behavior in engineering applications. However, the calibration process for advanced constitutive soil models can be time-consuming and requires significant expertise. To address these challenges, an automatic parameter calibration tool (ACT) was developed to simplify the calibration process and reduce application hurdles. In this study, the performance of the ACT was evaluated on two versions of the SANISAND class of models with a focus on cyclic simple shear tests. Experimental data on Ottawa-F65 sand were used to establish calibration and prediction sets for the ACT. The results demonstrate the high efficiency of the ACT in calibrating the parameters within the limits of their simulative capabilities. The ACT significantly reduces the time and expertise required for calibration, making advanced soil models more accessible to engineers and researchers in the field of geotechnical engineering. The study provides a valuable contribution toward improving the accuracy and efficiency of cyclic liquefaction modeling.
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Geo-Congress 2024
Pages: 297 - 306
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Published online: Feb 22, 2024
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