کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7886818 1509787 2018 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Smoothed particle hydrodynamics simulation and experimental analysis of SiC ceramic grinding mechanism
ترجمه فارسی عنوان
شبیه سازی هیدرودینامیکی ذرات نرم و تجزیه و تحلیل از مکانیزم آسیاب سیمان سرامیکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Crack induced surface/subsurface damage in SiC ceramic grinding limits the industrial application. A single-grain scratching simulation based on the smoothed particle hydrodynamics (SPH) has been used to analyze the SiC grinding mechanism, including the material removal process, scratching speed effect on crack propagation, ground surface roughness, and scratching force. The simulation results showed that the material removal process went through the pure ductile mode, brittle assisted ductile mode, and brittle mode with the increase of the depth of cut. The critical depth of cut for ductile-brittle transition was about 0.35 µm based on the change of ground surface crack condition, surface roughness, and maximum scratching force. Increasing the scratching speed promoted the transformation of deep and narrow longitudinal crack in the subsurface into the shallow and wide transverse crack on the surface, which improved the surface quality. The SPH simulation results were indirectly validated by the cylindrical grinding experiments in terms of the critical single grain depth of cut for ductile-brittle transition, and the trend of ground surface roughness and grinding forces.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12194-12203
نویسندگان
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