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Estimated loading and vehicle frequency (for the year 2020; image source: imhd_sk)
| Visualisation of the busses | Bus type | Number of vehicles per year in one direction | Estimated loading Surface load Front -> Back |
|---|---|---|---|
| Mercedes-Benz CapaCity | 59 072 | 143.8 kN/m2 | |
| 100.2 kN/m2 | |||
| 115.6 kN/m2 | |||
| 115.6 kN/m2 | |||
| Iveco Urbanway 12M | 84 765 | 158.1 kN/m2 | |
| 154.2 kN/m2 | |||
| SOR NB18 | 160 850 | 143.8 kN/m2 | |
| 115.6 kN/m2 | |||
| 154.2 kN/m2 | |||
Stress range magnitudes and number of cycles to failure at position PD (eccentricity +150 mm) from the Iveco Urbanway bus
| Stress range [MPa] | Number of cycles to failure |
|---|---|
| 104.67 | 3 505 317 |
| 102.91 | 3 687 831 |
| 5.21 | ∞ |
Comparison of estimated fatigue lives using three different methods
| Method | Expected lifespan [years] |
|---|---|
| Nominal stress method | 30 |
| Hot-spot stress method | 20 |
| Effective notch stress method | 26 |