Calibration of Viscoplastic Models for SAC305 Material

Abstract

The calibration of viscoplastic models for the material SAC305 is the focus of this work. For calibration, tensile and creep tests at various temperatures and deformation rates were performed. Data obtained using the digital image correlation (DIC) approach were also employed for the calibration. Four different temperatures 22 °C, 50 °C, 80 °C, and 100 °C two deformation rates 1 mm/min and 10 mm/min and two sample shapes make up the set of studies that were used. Anand's model, Norton's relation for creep, and Perzyn's model with Chaboche's strengthening rule were calibrated. The calibration of the Perzyn and Chaboche models is covered in the thesis before the calibration of the Norton relation. The finite element approach is used to simulate a few experiments and compare the results to the experiments. Finally, the Finite Element Method Updating (FEMU) is implemented to calibrate the Anand model. The calibration parameters and the relevant experiments are compared.