Table 1: Parameters of Burgers model.

Load level/MPaModel parametersCorrelation coefficient
/MPa/(105 MPa⋅s)E2/MPaη2/(104 MPa⋅s)

0.0531.9579.289163.1231.7820.981
0.133.32613.68172.1261.9580.974
0.358.86213.295168.3151.6380.987
0.584.54916.691215.8092.090.989