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Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Best-fitting parameters and error for the proposed models (\(\sigma = 27 \, \text{MPa}\))

From: A one-dimensional elasto-viscoplastic model coupled to damage for the description of creep in wooden materials

Specimen/parameters

Ee (MPa)

E1 (MPa)

\(\eta_{\text{1}}\)

\(\eta^{{\text{vp}}}\)

t0 (s)

\(\beta\)

Err (%)

Fl 27 /5

9.62 × 103

5.62 × 104

7.09 × 109

3.10 × 1010

6.49 × 106

1.87 × 10–7

0.29

Fl 27/ 9

1.37 × 104

2.64 × 104

3.00 × 106

1.68 × 108

3.42 × 103

7.40 × 10–5

0.50

Fl27/10

8.16 × 103

3.60 × 104

1.50 × 1010

3.50 × 1010

4.64 × 106

7.40 × 10–7

0.24

Fl 27/3

1.03 × 103

2.23 × 104

8.59 × 107

6.32 × 109

3.26 × 105

3.70 × 10–6

0.29

Fl27/1

1.12 × 104

2.33 × 104

7.23 × 106

7.79 × 108

2.69 × 104

1.03 × 10–3

0.23

Fl27/2

1.26 × 104

2.17 × 104

5.64 × 105

8.61 × 106

2.60 × 102

7.81 × 10–4

0.50

Fl27/4

1.34 × 104

1.93 × 104

9.47 × 105

7.54 × 106

9.10 × 101

8.51 × 10–3

0.59

Fl27/6

9.00 × 103

3.17 × 104

9.73 × 108

2.06 × 1010

2.15 × 106

1.48 × 10–7

0.82

Fl27/7

1.13 × 104

279 × 104

8.60 × 106

7.53 × 108

4.05 × 104

2.22 × 10–5

0.48

Fl27/8

8.82 × 103

3.18 × 104

1.21 × 1010

4.04 × 1010

4.36 × 106

2.22 × 10–7

0.38

Fl27/11

1.22 × 104

2.09 × 104

2.00 × 106

3.98 × 108

4.45 × 103

2.59 × 10–4

0.37

Fl27/12

9.00 × 103

3.77 × 104

1.62 × 1010

6.80 × 1010

7.58 × 106

3.70 × 10–8

0.19

Fl27/13

1.08 × 104

3.16 × 104

9.10 × 107

5.92 × 109

4.28 × 106

4.16 × 10–6

0.13

Fl27/14

1.04 × 104

2.61 × 104

6.55 × 109

6.65 × 1010

4.10 × 106

2.96 × 10–6

0.77

Fl27/15

1.22 × 104

3.40 × 104

1.60 × 108

4.19 × 109

2.55 × 105

3.70 × 10–6

0.22

Means values

1.08 × 104

2.98 × 104

3.88 × 109

1.87 × 1010

2.03 × 106

6.92 × 10–4

0.40

Standard deviation

1.67 × 103

8.70 × 103

5.78 × 109

2.33 × 1010

2.50 × 106

2.10 × 10–3

0.20

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