Determination of Anand viscoplastic constitutive parameters for the AuGe solder alloy from experimental stress-strain curves for power systems integration FEA simulations

A determination of the Anand viscoplastic model parameters for 88Au12Ge solder alloy is presented in this work. Using experimental data from temperature and rate dependent shear stress tests, the nine characteristic parameters for the aforementioned model were obtained through non-linear fitting using a Least Squared Residual approach. The calculated estimated parameters were used to replicate the...