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Table 2 Sensitivity to initial set of parameters: specimen 2

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

Parameters

\(\varvec{E}\) (GPa)

\(\varvec{v}\)

\(\varvec{k}\) (GPa)

\(\varvec{\sigma }_{\mathrm{0}}\) (MPa)

Initial value 1

1.00E−09

1.00E−09

1.00E−09

1.00E−09

Identified values

209.74

0.3002

1.032

300.10

Number of iterations

7

7

8

8

Initial value 2

155.00

0.15

0.50

150.00

Identified values

209.77

0.3003

1.031

300.10

Number of iterations

7

7

6

6

Initial value 3

420.00

0.60

2.00

600.00

Identified values

209.84

0.3003

1.033

300.09

Number of iterations

8

8

6

6