کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7171548 1463711 2018 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New methodology of fatigue life evaluation for multiaxially loaded notched components based on two uniaxial strain-controlled tests
ترجمه فارسی عنوان
روش جدیدی برای ارزیابی عمر خستگی برای اجزای لبه های چند لبه لود شده بر اساس دو آزمایش دو طرفه کنترل شده با یک طرفه
کلمات کلیدی
تراکم انرژی، بارگذاری چند آمپر، پیش بینی عمر خستگی، اثر نکته، میله گرد تنش شبه الاستیک،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
The present paper focuses on the application of the total strain energy density approach to assess fatigue life in notched samples subjected to multiaxial loading. This approach requires, as a starting point, a fatigue master curve defined in terms of total strain energy density versus number of cycles to failure, which is usually determined from a set of uniaxial fatigue tests using smooth standard specimens. In order to reduce the time and cost associated with the generation of the fatigue master curve, a straightforward methodology based on the outcomes of only two uniaxial strain-controlled tests is proposed. The methodology is applied to round bars with U-shaped notches subjected to proportional bending-torsion loading histories. A very good correlation between the experimental and the predicted life of the notched specimens is observed. In addition, the theoretical predictions are nearly independent of the pairs of uniaxial strain-controlled tests selected to obtain the fatigue master curve, which indicates a good robustness of the suggested methodology.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 111, June 2018, Pages 308-320
نویسندگان
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