کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4986102 1454796 2017 39 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A computational stochastic multiscale methodology for MEMS structures involving adhesive contact
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
A computational stochastic multiscale methodology for MEMS structures involving adhesive contact
چکیده انگلیسی
This work aims at developing a computational stochastic multiscale methodology to quantify the uncertainties of the adhesive contact problems due to capillary effects and van der Waals forces in MEMS. Because the magnitudes of the adhesive forces strongly depend on the surface interaction distances, which in turn evolve with the roughness of the contacting surfaces, the involved structural behaviors suffer from a scatter. To numerically predict the probabilistic behaviors of structures involving adhesion, the proposed method introduces stochastic meso-scale random apparent contact forces which can be integrated into a stochastic finite element model. Because the evaluation of their realizations is expensive, a generator for the random apparent contact force using the polynomial chaos expansion is constructed in an efficient way.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 110, June 2017, Pages 401-425
نویسندگان
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