Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Summary of recorded real train passages
| No. | Code name | Description | direction of passage | Accelerometer setup | Hour of pasage |
|---|---|---|---|---|---|
| 1 | T1 | Freight train | Forst-Zasieki | U1 | 11:27 |
| 2 | T2 | Freight train | Forst-Zasieki | U1 | 13:11 |
| 3 | T3 | Freight train | Zasieki-Forst | U2 | 15:00 |
| 4 | L1 | Heavy locomotive | Forst-Zasieki | U2 | 15:16 |
| 5 | O1 | Railcar | Zasieki-Forst | U1 | 16:33 |
| 6 | O2 | Railcar | Forst-Zasieki | U1 | 16:41 |
FEM predicted and identified modes of vibration
| FEM | nOMA/nt | OMA | Times identified | Mode shape description | ||||
|---|---|---|---|---|---|---|---|---|
| No. | nt [Hz] | nOMA [Hz] | UnOMA [Hz] | ξ [%] | Uξ [%] | |||
| 1 | 5.70 | 0.81 | 4.60 | 0.02 | 0.66 | 0.28 | 9 | I lateral bending |
| 2 | 7.29 | 1,07 | 7.83 | 0.14 | 1.24 | 1.33 | 9 | I vertical bending |
| 3 | 10.50 | 0.97 | 10.14 | 0.11 | 0.38 | 0.13 | 8 | I torsional along x axis |
| 4 | 10.94 | 0.92 | 10.06 | - | 0.46 | - | 1 | II upper flange in phase |
| 5 | 11.43 | 0.96 | 10.95 | 0.10 | 0.29 | 0.09 | 9 | I upper flange out of phase |
| 6 | 11.76 | 1.03 | 12.11 | 0.03 | 0.28 | 0.16 | 9 | II upper flange out of phase |
| 7 | 12.44 | 1.08 | 13.40 | - | 0.41 | - | 2 | III upper flange out of phase |
| 8 | 12.78 | 1.07 | 13.68 | - | 1.38 | - | 1 | III upper flange in phase |
| 16 | 15.48 | - | - | - | - | 0 | IV upper flange in phase | |
| 17 | 15.51 | - | - | - | - | 0 | IV upper flange out of phase | |
| 19 | 17.98 | 0.95 | 17.06 | 0.12 | 0.79 | 0.46 | 9 | I torsional |
| 20 | 20.69 | - | - | - | - | 0 | II lateral bending | |
| 21 | 21.82 | - | - | - | - | 0 | V upper flange in phase | |
| 22 | 21.88 | - | - | - | - | 0 | V upper flange out of phase | |
| 23 | 22.47 | 0.95 | 21.27 | - | 0.34 | - | 3 | II lateral bending |
| 24 | 29.52 | - | - | - | - | 0 | III lateral bending | |
| 25 | 28.22 | - | - | - | - | 0 | II torsional | |