کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
770969 1463129 2012 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stress intensity factors and fatigue growth of a surface crack in a drill pipe during rotary drilling operation
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Stress intensity factors and fatigue growth of a surface crack in a drill pipe during rotary drilling operation
چکیده انگلیسی

Drill pipe in a curved section of the drilled well is considered as a rotating hollow cylinder subjected to bending and tension loads. So in this paper, the stress intensity factors and the fatigue growth of a circumferential semi-elliptical surface crack in a hollow cylinder subjected to rotary bending and tension are studied. A stress intensity factor database for three loading cases is build for numerous configurations using 3D Finite Element Models. The crack propagation model employs the Walker fatigue growth rate law. Using this model, we can study the evolution of parameters characterizing the process of crack propagation.


► We study a hollow cylinder subjected to a combination of rotary bending and tension.
► A stress intensity factor database is built for circumferential semi-elliptical cracks.
► Walker law is used for computing crack propagation.
► The results show a very important role of the tension on the fatigue crack growth.
► The crack propagation life of drill pipes is calculated using this developed model.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 96, December 2012, Pages 626–640
نویسندگان
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