کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778372 1463793 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ultimate hardening/softening model of material for fatigue crack initiation onset and determination of its parameters
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Ultimate hardening/softening model of material for fatigue crack initiation onset and determination of its parameters
چکیده انگلیسی

The paper considers a computational model, based on the consideration of the hardening/softening level in local volumes, to assess the high-cycle fatigue life of materials. This approach could be considered as a modified Orowan–Afanasiev model. A method to determine the model parameters from fatigue curve (Wöhler curve) is proposed. The description of inelastic cyclic deformation of materials by mean of this model is demonstrated. The model was shown to be promising for predicting the life of structural elements. A special feature of the model is the possibility of studying the kinetics of fatigue damage by the change of inelastic strain.


► New hardening/softening model for the high-cycle fatigue is proposed.
► Cyclic local yield stress is considered.
► The description of inelastic cyclic deformation by this model is demonstrated.
► Model parameters are determined from the known a high-cycle fatigue curve.
► The model can be used in a program for computing the life of structural elements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 39, June 2012, Pages 15–24
نویسندگان
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