Abstract
In this paper, finite element analysis is conducted to study dynamic responses of a defected drill pipe (DP) un-der impact loading encountered in working conditions. Lon-gitudinal impact loading such as tensile, eccentric compres-sive and torsional impact loading and transverse collision loading are considered. A finite element model is firstly de-veloped and validated, and then employed to evaluate the effects of various impact loading on dynamic responses of the defected DP. It is found that the inertial effect due to tensile impact is the most prominent among all the longitu-dinal impact loadings. In addition, the effect of the trans-verse collision between the DP and the borehole wall on the driving force of the crack is evaluated. It is concluded that the dynamic effects of the various impact loading frequently exerting on the DP should be taken into consideration for life prediction of DPs.
| Original language | English |
|---|---|
| Pages (from-to) | 404-411 |
| Number of pages | 8 |
| Journal | Mechanika |
| Volume | 24 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2018 |
Bibliographical note
Publisher Copyright:© 2018 Kauno Technologijos Universitetas. All Rights Reserved.
Keywords
- drill pipe
- finite element method
- fracture mechanics
- loads (mechanics)