Stress amplification factor analysis methodology for assessing fatigue performance of threaded connectors
US10025889B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2014 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Feb 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F30/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer-implemented method is disclosed for characterizing a threaded coupling such as between two tubular members, e.g., casing segments employed in the field of oil and gas recovery. In one embodiment, a virtual model of the coupling is generated, and the virtual model is re-arranged to simulate plastic deformation of at least part of the coupling. The re-arranged model is analyzed to derive a stress/strain distribution of the coupling subject to subsequent loading, and an SAF (stress amplification factor) is determined from the analysis that reflects the effect of cyclic loading of the coupling. The method facilitates a thorough assessment of the performance of the coupling in fatigue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.