Research Article
High-Frequency Vibration Analysis and Optimization of Irregular Wear of Pantograph Carbon Strips
Table 5
Modal frequencies and damping ratios of trapezoidal carbon strips with different damping parameters.
| | Mode | Scheme 1 | Scheme 2 | Scheme 3 | | Frequency (Hz) | Damping ratio | Frequency (Hz) | Damping ratio | Frequency (Hz) | Damping ratio |
| | First | 63.4 | 1.466 | 56.4 | 1.810 | 51.4 | 2.155 | | Second | 141.9 | 0.523 | 122.6 | 1.233 | 112.9 | 1.654 | | Third | 242.6 | 0.862 | 212.8 | 1.680 | 194.2 | 1.379 | | Fourth | 396.3 | 1.652 | 349.7 | 1.785 | 320.9 | 2.511 | | Fifth | 595.3 | 1.471 | 514.0 | 1.602 | 482.9 | 1.661 | | Sixth | 827.4 | 0.580 | 714.5 | 1.225 | 661.8 | 1.559 |
|
|
