Table 2 Summary of effective strains \(\bar {\varepsilon }\) (Eq. (3)), von Mises stresses \(\bar {\sigma }\) [MPa] (Eq. (1)) and stress triaxiality η (Eq. (2)) at crack initiation for both experiments and simulations
Medium strength | High strength | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
1 clamp | 2 clamps | 1 clamp | 2 clamps | |||||||
0.05h | 0.15h | 0.25h | 0.05h | 0.15h | 0.25h | 0.15h | 0.25h | 0.15h | 0.25h | |
\(\bar {\varepsilon }_{\mathrm {I}}^{\text {exp}}\) | 1.7 | 1.7 | 3.0 | 1.0 | 1.1 | 1.2 | 0.6 | 0.5 | 0.6 | 1.0 |
\(\bar {\varepsilon }_{\mathrm {I}}^{\text {sim}}\) | 2.4 | 2.2 | 3.5 | 2.0 | 1.9 | 1.9 | 1.5 | 1.7 | 1.1 | 1.2 |
\(\bar {\varepsilon }_{\text {II}}^{\text {sim}}\) | 1.7 | 1.5 | 2.9 | 1.5 | 1.5 | 1.5 | 1.0 | 0.9 | 0.8 | 0.9 |
\(\bar {\sigma }_{\mathrm {I}}^{\text {exp}}\) | 850 | 840 | 870 | 820 | 820 | 840 | 1480 | 1480 | 1480 | 1480 |
\(\bar {\sigma }_{\mathrm {I}}^{\text {sim}}\) | 930 | 930 | 990 | 850 | 900 | 910 | 1520 | 1530 | 1530 | 1480 |
\(\eta _{\mathrm {I}}^{\text {exp}}\) | 0.2 | 0.05 | 0.2 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.05 | 0.1 |
\(\eta _{\mathrm {I}}^{\text {sim}}\) | 0.3 | 0.05 | 0.3 | 0.2 | 0.4 | 0.5 | 0.0 | 0.1 | -0.2 | 0.3 |
\(\eta _{\text {III}}^{\text {sim}}\) | 0.7 | 0.7 | 0.8 | 0.4 | 0.5 | 0.6 | 0.3 | 0.4 | 0.2 | 0.4 |