Table 2.
Contact information and relative errors under polygon–polygon contact condition.
| Contact condition | Calculation method | Contact Information | ||
|---|---|---|---|---|
| Contact point (x, y) | Contact normal (x, y) | Contact depth/mm | ||
| Angle–Angle | CAD calculation (exact value) | (688.5940, 722.2184) | (0.969909,0.243462) | − 57.4266 |
| Algorithm calculation (value) | (699.532, 699.831) | (0.96991, 0.243462) | − 57.4265 | |
| Absolute difference | (10.938, − 22.3874) | (0.000001,0.0) | 0.0001 | |
| Deviation/angle | 24.9166 | 0.1092° | 0.0001 | |
| Relative error | (1.59%,3.10%) | 0.078% | 0 | |
| Angle–Edge | CAD Calculation (exact value) | (711.0354, 718.9695) | (0.996317, 0.0857430) | − 22.8660 |
| Algorithm calculation (value) | (711.234, 761.116) | (0.996318, 0.0857399) | − 22.8660 | |
| Absolute difference | (0.1986,42.1465) | (0.000001, − 0.0000031) | 0.0 | |
| Deviation/angle | 42.1470 | 0° | 0.0 | |
| Relative error | (0.028%,5.86%) | 0 | 0 | |
| Edge–Edge | CAD Calculation (exact value) | (644.0412, 642.5893) | (0.729218, − 0.684278) | − 28.3246 |
| Algorithm calculation (value) | (727.325, 727.458) | (0.729219, − 0.684281) | − 28.3245 | |
| Absolute difference | (83.2838,84.8687) | (0.000001, − 0.000003) | 0.0001 | |
| Deviation/angle | 118.9070 | 0° | 0.0001 | |
| Relative error | (12.93%,13.21%) | 0 | 0 | |