کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
777689 1463780 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mean stress effect correction using constant stress ratio S–N curves
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Mean stress effect correction using constant stress ratio S–N curves
چکیده انگلیسی

This paper presents a stress based approach to take into account the influence of the mean stress value on fatigue strength of constructional materials. Elaborated model uses two S–N curves, i.e. for alternating stress (R = −1) and another one obtained under stress ratio R ≠ −1, for calibrating the equations of boundary condition. Two particular equations for the coefficient of intensification in stress transformations were proposed. The main advantage of the proposed solution is that the mean stress effect correction depends on the number of cycles to failure, what corresponds to the observed changes in experimental results presented in the literature. Proposed relations were compared with popular models for mean stress correction. The verification was made using selected series of experimental results taken from the literature. It was shown that the proposed solution is well correlated with experimental results.


• A new solution in terms of mean stress compensation is presented step by step.
• Two new mean stress compensation models are proposed.
• Proposed mean stress correction models can be used for different temperatures.
• Two new models are validated successfully for test results gained out of literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 52, July 2013, Pages 49–56
نویسندگان
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