Research Article
Research on the Size Effect of Unstable Fracture Toughness by the Modified Maximum Tangential Stress (MMTS) Criterion
Table 2
Y(α) and V(α) values obtained by the finite element method compared with values obtained by formulas of Guinea et al. and relative errors.
| α0 | Y(α) | V(α) | Y(α) (Guinea et al.) | V(α) (Guinea et al.) | V(α) (equation (5)) | Relative error Y(α) (%) | Relative error V(α) (%) | Relative error V(α) (equation (5)) (%) |
| 0.2 | 1.6216 | 1.4434 | 0.8392 | 1.3780 | 1.4434 | 1.24 | 2.10 | 4.75 | 0.3 | 1.7192 | 1.5932 | 1.1324 | 1.6008 | 1.5932 | 1.25 | 2.06 | 0.47 | 0.4 | 1.9287 | 2.0189 | 1.5204 | 2.0288 | 2.0189 | 1.94 | 0.27 | 0.49 | 0.5 | 2.3389 | 2.7754 | 2.0985 | 2.7891 | 2.7754 | 1.48 | 0.78 | 0.49 | 0.6 | 3.0536 | 4.1445 | 3.0576 | 4.2170 | 4.1445 | 1.54 | 1.65 | 1.72 |
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