کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
618316 1455036 2010 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Asperity creep under constant force boundary conditions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Asperity creep under constant force boundary conditions
چکیده انگلیسی

This work presents an analysis of the transient creep deformation of a hemisphere in contact with a rigid flat, loaded by a constant force. The analysis is based on extensive finite element simulations, using a Garofalo creep law. Motivated by the simulations, an analytical framework is derived. Starting from the trivial case of a cylinder, the analytical framework can be generalized by exchanging a few functionals; this will describe the spherical geometry under analysis. The necessary functionals are derived by using a combination of analytical and empirical models. The resulting model accurately predicts the creep evolution of arbitrary asperities for a wide parameter range, requiring only the bulk material parameters. The results are interpreted in view of transient friction effects with creep as their possible cause.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 268, Issues 11–12, 12 May 2010, Pages 1285–1294
نویسندگان
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