Open Access
表1
钻柱模型力学参数
| 模型参数 | 仿真数值 |
| 刚度系数k/(Nm·rad-1) | 473 |
| 钻柱阻尼系数c/(Nms·rad-1) | 23.2 |
| 顶驱转动惯量J1/(kg·m2) | 2 122 |
| 顶驱阻尼系数c1/(Nms·rad-1) | 425 |
| BHA转动惯量J2/(kg·m2) | 374 |
| BHA阻尼系数c2/(Nms·rad-1) | 50 |
| 最大静摩擦扭矩Ma/Nm | 12 148 |
| 滑动摩擦扭矩M0/Nm | 7 600 |
| 经验常数ξ | 0.9 |
| 零速区间阈值Δω/(rad·s-1) | 0.001 |
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