کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775612 1463821 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crack growth-based fatigue-life prediction using an equivalent initial flaw model. Part II: Multiaxial loading
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Crack growth-based fatigue-life prediction using an equivalent initial flaw model. Part II: Multiaxial loading
چکیده انگلیسی

A general methodology is proposed in this paper for fatigue-life prediction using crack growth analysis. This is the part II of the paper and focuses on the fatigue-life prediction under proportional and nonproportional multiaxial loading. The proposed multiaxial fatigue-life prediction is based on a critical plane-based multiaxial fatigue damage model and the Equivalent Initial Flaw Size (EIFS) concept. An equivalent stress intensity factor under general multiaxial proportional and nonproportional loading is defined. The fatigue life is predicted by integration of the crack growth rate curve from the EIFS to the critical crack length. The proposed model can automatically adapt for different materials experiencing different local failure modes. The numerical fatigue-life prediction results calculated by the proposed approach are validated with experimental data for a wide range of metallic materials available in the literature. Reasonable agreements are observed between the model predictions and the experimental observations under proportional and nonproportional loading.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 32, Issue 2, February 2010, Pages 376–381
نویسندگان
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