کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
804676 1468316 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spectral fatigue life estimation for non-proportional multiaxial random loading
ترجمه فارسی عنوان
برآورد طیفی عمر خستگی برای بارگذاری غیرمتناسب تصادفی چندمحوره
کلمات کلیدی
معیار انتقادی مبتنی بر صفحه ؛ معیار دامنه فرکانس؛ خستگی چند ضلعی بارگیری تصادفی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• A frequency-domain High-Cycle Fatigue critical plane-based criterion is presented.
• Fatigue life of smooth structures under multiaxial random loading is estimated.
• The PSD function of an equivalent normal stress quantifies the fatigue damage.
• Influence of the critical plane orientation on fatigue life estimation is evaluated.
• Multiaxial random fatigue test data are compared with the theoretical results.

A frequency-domain High-Cycle Fatigue (HCF) criterion based on the critical plane approach is here proposed to estimate fatigue life of smooth metallic structural components under multiaxial random loading. The procedure consists of the following three steps: (a) definition of the critical plane; (b) PSD evaluation of an equivalent normal stress; and (c) computation of the fatigue life. A new formulation to define the critical plane is adopted in order to improve the lifetime estimation. The criterion is validated through comparison of the obtained numerical results with experimental fatigue data available in the literature for structural steel specimens subjected to a combination of random non-proportional bending and torsion.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theoretical and Applied Fracture Mechanics - Volume 83, June 2016, Pages 67–72
نویسندگان
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