Research Article
Mathematical Modeling and Analysis of Drill String Longitudinal Vibration with Lateral Inertia Effect
Table 1
Material parameters of the drilling string.
| Parameters name | Results |
| Density of drill string (kg/m3) | 8000.00 | Elastic modulus of drill string (MPa) | 2.06 103 | Stiffness coefficient (N/m) | 1.00 105 | Longitudinal shear stiffness of drilling fluid inside drill string (Mpa/m) | 0.3 | Longitudinal shear stiffness of drilling fluid outside drill string (Mpa/m) | 0.1 |
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