کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
776524 1463739 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A new path-dependent fatigue damage model for non-proportional multi-axial loading
ترجمه فارسی عنوان
یک مدل آسیب خستگی وابسته به مسیر جدید برای بارگیری چند محوری غیر متناسب
کلمات کلیدی
خستگی چند محوری شمارش چرخه چند محوری بارگیری غیر متناسب، مدلسازی آسیب خستگی، مفاصل جوش
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی


• Presented a Moment of Load Path model for computing non-proportional fatigue damage.
• Provided an interpretation as a form of strain energy densities in stress plane.
• Validated by correlating a large amount of test data in both LCF and HCF regimes.

This paper presents a new path-dependent multi-axial fatigue damage model which is formulated based on an incremental form of Moment of Load Path (MLP) on either σ-βτ stress plane or ε-βεγ strain plane. The resulting MLP-based fatigue damage parameter can be shown to be related to an integral form of strain energy densities contributed by normal and shear deformation and each weighted by a path-dependent function. Then, the MLP-based damage parameter in terms of either equivalent stress range or strain range, in conjunction with path-dependent maximum-range cycle counting procedure (Dong et al., 2010; Wei and Dong, 2010), has been shown effective in correlating a large amount of test data obtained under non-proportional multi-axial loading conditions both for welded joints under stress-controlled conditions in high cycle fatigue regime and non-welded components under strain-controlled conditions in low-cycle regime.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 90, September 2016, Pages 210–221
نویسندگان
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