| Autor: |
Askar Kudaibergenov, Askat K. Kudaibergenov |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
International Journal of Mathematics and Physics. 6:27-35 |
| ISSN: |
2218-7987 |
| DOI: |
10.26577/2218-7987-2015-6-2-27-35 |
| Popis: |
In this work a nonlinear mathematical model of coupled axial and lateral vibrations of a drill string under the effect of a longitudinal compressing force is investigated. The drill string is modelled in the form of a rotating elastic rod. To solve the model the Bubnov-Galerkin method and numerical stiffness switching method are applied. It is shown that the coupled axial and lateral vibrations of the drill string only arise at odd frequencies in Bubnov-Galerkin's expansion. Numerical analysis of the influence of the drill string geometrical and frequency characteristics on its vibrations is carried out, and the corresponding recommendations are provided. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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