کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775432 1463806 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical evaluation of fatigue strength on mechanical notched components under multiaxial loadings
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Numerical evaluation of fatigue strength on mechanical notched components under multiaxial loadings
چکیده انگلیسی

This paper deals with the fatigue behaviour of complex, three-dimensional, stress concentrations under multiaxial loadings. Starting from the stress field obtained by means of a linear elastic analysis and taking advantage of the so-called implicit gradient approach, a safety factor is calculated for high-cycle fatigue. In this first attempt, attention has been focused on the stress-invariant based approaches in the high-cycle fatigue regime. The multiaxial damage evaluation is obtained by analysing the full loading path of the Crossland five-dimensional invariant deviatoric stress in Euclidean space by means of the variance reference frame. Explicit analytical solutions of the proposed criterion are given in the case of biaxial sinusoidal loads.The method was validated by comparison with experimental data involving multiaxial in-phase and out-of-phase loading of specimens which contained three-dimensional stress concentrations. These types of stress concentrations are known to present problems for other predictive methods.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 33, Issue 5, May 2011, Pages 661–671
نویسندگان
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