Table 5.
Comparison of contact stress (MPa) for EPDM and LSR across different aging conditions using Mooney–Rivlin, Ogden, and Yeoh models.
| Location | EPDM | LSR | ||||
|---|---|---|---|---|---|---|
| Mooney–Rivlin | Ogden | Yeoh | Mooney–Rivlin | Ogden | Yeoh | |
| No Aging | ||||||
| 1st Anode | 20.99 | 75.38 | 10.81 | 31.11 | 211.01 | 51.35 |
| 1st Cathode Up | 23.86 | 91.07 | 11.46 | 37.57 | 261.49 | 62.93 |
| 1st Cathode Down | 22.26 | 85.31 | 10.98 | 33.45 | 277.17 | 57.61 |
| Heat | ||||||
| 1st Anode | 21.29 | 73.32 | 10.09 | 31.72 | 241.29 | 47.03 |
| 1st Cathode Up | 24.02 | 89.09 | 10.86 | 38.20 | 285.88 | 58.21 |
| 1st Cathode Down | 22.53 | 81.14 | 10.31 | 33.66 | 296.93 | 50.69 |
| Heat + Sulfuric Acid | ||||||
| 1st Anode | 22.32 | 20.57 | 11.75 | 9.21 | 8.31 | 8.10 |
| 1st Cathode Up | 25.83 | 23.61 | 12.76 | 9.75 | 8.76 | 8.50 |
| 1st Cathode Down | 23.07 | 21.70 | 11.90 | 9.22 | 8.25 | 8.18 |