Title of article :
A computational approach for the fatigue design of threaded connections
Author/Authors :
Mohamed Ferjani، نويسنده , , Daniel Averbuch، نويسنده , , Andrei Constantinescu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Abstract :
The aim of this paper is to propose a lifetime prediction method for threaded connections. The example discussed here is a drillstring connection used in the oil and gas industry. The method is based on a mechanical analysis performed either with finite elements or a closed-form solution described in a companion paper, and a fatigue analysis using the Dang Van criterion which has been extended to finite life domain. The mechanical analysis provides the stabilized stress path and the fatigue analysis provides the fatigue life. Fatigue tests have been performed on small scale threaded connections in order to validate the methodology. The comparisons with the predictions show the difficulties to estimate the fatigue life on structures presenting high stress gradient due to scale effects.
Keywords :
Threaded connection , Closed-form solution , High cycle fatigue , Notch , Dang Van criterion
Journal title :
INTERNATIONAL JOURNAL OF FATIGUE
Journal title :
INTERNATIONAL JOURNAL OF FATIGUE