| Issue |
MATEC Web Conf.
Volume 95, 2017
2016 the 3rd International Conference on Mechatronics and Mechanical Engineering (ICMME 2016)
|
|
|---|---|---|
| Article Number | 07001 | |
| Number of page(s) | 5 | |
| Section | Mechanical Design-Manufacture and Automation | |
| DOI | https://doi.org/10.1051/matecconf/20179507001 | |
| Published online | 09 February 2017 | |
Random Fatigue Analysis of Drill-Strings in Frequency Domain
1 Department of Mechanical Engineering, Memorial University of Newfoundland, A1B 3X5, St John’s Canada
2 School of Mechanical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P.R.China
Predicting fatigue damage induced by vibrations is of benefit to oil and gas industry. In this paper a spectral method is developed to estimate the damage of vibration, including both deterministic and random vibration, on the fatigue life of drillstrings. The drill-string is first modeled by the continuous parameter method with two vibration modes: axial and torsional. After the vibration response is obtained, the equivalent stress spectra are calculated for any position along the drill-string, based on maximum shear stress fatigue failure criterion. The fatigue life of the drill-string at arbitrary position is then estimated by the developed spectral methods
© The Authors, published by EDP Sciences, 2017
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