کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4986044 1454795 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Space grease lubrication modeling: A discrete element approach
ترجمه فارسی عنوان
مدل سازی روانکاری فاز گریس: یک رویکرد عنصر گسسته
کلمات کلیدی
گریس فضا، عنصر گسسته، مایع / ذرات، روانکاری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی


- A fluid/solid Grease Discrete Element Model (GDEM) is developed.
- The GDEM parameter identification procedure is based on rheometer-like simulations.
- The GDEM is submitted to tribometer-like conditions to investigate flow mechanisms.
- The GDEM tribological behavior is controlled by granulometry and physico-chemistry.

The tribological behavior of space grease is investigated with the Discrete Element Method. In the first step, the grease is described as a collection of particles of two kinds (oil and PTFE) in interaction. The development of the Grease Discrete Element Model (GDEM) used here, is based on rheometer-like characterizations. In the second step, the GDEM is subjected to tribometer-like conditions to investigate grease flow mechanisms and the role of the thickener (PTFE) in lubrication. The tribological behavior of grease seems to be controlled by the coupled influence of both granulometric (thickener particle sizes) and physico-chemical (interaction law) parameters. These results provide the starting point for identifying the parameters on which to act to reformulate greases.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 111, July 2017, Pages 159-166
نویسندگان
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