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Strain energy comparison with linear elastic materials when maximum tensile strain reaches 0.15.
| displacement (mm) | force (N) | strain energy (J) | |
|---|---|---|---|
| straight blades | 1.80 | 0.254 | 0.000169 |
| 120° notch | 1.44 | 0.216 | 0.000117 |
| 90° notch | 1.64 | 0.214 | 0.000129 |
| 60° notch | 1.68 | 0.158 | 0.000096 |
