“…The material constants for the model were obtained through analysis of the material behavior and by fitting to the experimental data. [26][27][28][29] For the Sn-3.5Ag eutectic solders analyzed in this paper, the values of the parameters were suggested as: E = 45 GPa, A = 5.81 · 10 3 s -1 , a = 0, D = 0.001, n = 2, d = 70 MPa, R = 8.0 MPa, l = 16 GPa, b = 0.009 s -1 , Q = 38,000 J/mol, in which the YoungÕs modulus E and apparent activation energy Q are determined from experiment work by Mavoori 30 and Darveaux,31 respectively. The other parameters are obtained by fitting the experimental results.…”