کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7001940 1454785 2018 34 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the role of adhesion and roughness in stick-slip transition at the contact of two bodies: A numerical study
ترجمه فارسی عنوان
در نقش چسبندگی و زبری در انتقال لغزش لغزنده در تماس دو بدن: یک مطالعه عددی
کلمات کلیدی
لغزش لغزش، چسبندگی، خشونت،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی
This paper proposes a boundary element model for the stick-slip transition at the contact of two bodies of dissimilar materials in presence of adhesion due to van der Waals force. The adhesion is modeled using a Dugdale approximation of adhesive energy. The coupling between the normal pressure and shear stresses is included so that there is no full-stick condition, even in the absence of an external shear stress. Furthermore, the evolution of the slip area over the contact area is different from the well-known Cattaneo-Mindlin solution due to the difference in the mechanical properties of the contacting bodies. It is also shown that the adhesion increases the pre-sliding distance and the static friction. While roughness can only increase the former one. However, the combined effect of roughness and adhesion on the pre-sliding distance is not cumulative as these two parameters are found to be symbiotic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 121, May 2018, Pages 381-388
نویسندگان
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