کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
618030 1455020 2011 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Contact area on rough surface of nonlinear isotropic brittle materials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Contact area on rough surface of nonlinear isotropic brittle materials
چکیده انگلیسی
An asperity profile function has been proposed that describes the isotropic rough surface of a material. The function is parameterized with three new roughness parameters that control the root mean square height, the slope and the curvature of the rough surface, respectively. Unlike the roughness parameters used in the well known Greenwood-Williamson model, the three parameters introduced in this paper are independent of each other, which is an advantage as this facilitates the characterization of the isotropic random surface of the material. However, a disadvantage with this parameterization is that the roughness parameters are not linked to a contact area equation any more, like the Hertz equations that express contact with linear materials. Different asperity profiles defined by the new roughness parameters were analyzed by a 2D axial symmetric FE-model. The numerical results suggest a procedure for developing a contact area function that are parameterized with the three new roughness parameters, which is also suitable for nonlinear brittle materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 271, Issues 7–8, 18 July 2011, Pages 1017-1028
نویسندگان
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