کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1563635 999616 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational analysis and characterization of fretting stress fields
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مکانیک محاسباتی
پیش نمایش صفحه اول مقاله
Computational analysis and characterization of fretting stress fields
چکیده انگلیسی

If a friction pad is idealized as sharp corner contact, the stress around the corner can be hyper-singular, as predicted in many known works. In this paper we have investigated singular stress characterization of sharp friction pad based on finite element computations with varying pad radii. It is confirmed that the sharp pad possesses singular stress and the singularity depends on both friction coefficient and pad geometry. Our detailed computations confirm that the validity of the sharp pad solution is limited only for mathematically sharp corner. As soon as the pad corner is rounded with a small finite radius, the stress concentration decreases dramatically which cannot be approximated by the hyper-singular asymptotic solution. For a rounding radius larger than 0.1 mm, stress fields of the friction pair are described by the rounded contact surface. One may use the known stress intensity factors to assess the friction fretting damage.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computational Materials Science - Volume 45, Issue 3, May 2009, Pages 674–679
نویسندگان
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