کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
781134 1463796 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A cohesive model for fatigue failure in complex stress-states
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
A cohesive model for fatigue failure in complex stress-states
چکیده انگلیسی

A stress-state dependent traction–separation law is combined with an irreversible damage parameter to formulate a cohesive model relevant for life assessment under complex stress-states. Evolution of damage is based on continuum damage laws requiring two cohesive fatigue parameters. For two representative metals, model is able to reproduce typical stress-life response, mean stress effects and sequencing effects under variable amplitude loads. Control of cohesive fatigue parameters on characteristics of the stress-life curve is established, followed by predictions for proportional, cyclic stress-states. With increasing constraint, initiation and growth of damage is more rapid such that higher constraint results in lower life expectancy.


► Stress-state dependent cohesive model combined with irreversible damage parameter.
► Two fatigue cohesive parameters.
► Two representative metals for fatigue response predictions.
► Reproduce trends of uniaxial and biaxial fatigue response.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Fatigue - Volume 36, Issue 1, March 2012, Pages 155–162
نویسندگان
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