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Table 3 Sensitivity to noise: specimen 2

From: Enhanced features of a constitutive equation gap identification method for heterogeneous elastoplastic behaviours

Parameters Reference values Random noise amplitude \(\mathbf 0.1 *{\varvec{\gamma }}\) Random noise amplitude \({\varvec{\gamma }} \) Random noise amplitude \(\mathbf 2 *{\varvec{\gamma }} \)
E (GPa) 210 209.79 206.96 189.56
Relative difference (%)   0.11 1.45 9.73
v 0.3 0.3000 0.3001 0.2324
Relative difference (%)   0 0.03 23.53
k (GPa) 1 0.998 0.998 0.963
Relative difference (%)   0.20 0.20 3.70
\(\sigma _{\mathrm{0}}\) (MPa) 300 300.17 299.84 300.46
Relative difference (%)   0.06 0.05 0.15