5 0 0 0 OA 宇宙環境におけるトライボロジー
- 著者
- 岩木 雅宣 小原 新吾
- 出版者
- 一般社団法人 表面技術協会
- 雑誌
- 表面技術 (ISSN:09151869)
- 巻号頁・発行日
- vol.63, no.1, pp.9, 2012-01-01 (Released:2012-10-03)
- 参考文献数
- 13
- 被引用文献数
- 2
1 0 0 0 OA 宇宙機のトライボロジー
- 著者
- 小原 新吾
- 出版者
- 公益社団法人 精密工学会
- 雑誌
- 精密工学会誌 (ISSN:09120289)
- 巻号頁・発行日
- vol.86, no.8, pp.586-590, 2020-08-05 (Released:2020-08-05)
- 参考文献数
- 17
1 0 0 0 OA Explicit MPS法によるビンガム擬塑性流体ダム崩壊挙動の数値解析
- 著者
- 根岸 秀世 雨川 洋章 間庭 和聡 小原 新吾 羽山 誠 董 大明
- 出版者
- 一般社団法人 日本機械学会
- 雑誌
- 日本機械学会論文集 (ISSN:21879761)
- 巻号頁・発行日
- vol.85, no.875, pp.19-00086, 2019 (Released:2019-07-25)
- 参考文献数
- 22
- 被引用文献数
- 3
Grease lubrication in ball bearings is one of key technologies to reduce energy consumption and enhance lifetime in design of spacecrafts as well as general industrial machineries. From a view point of grease lubrication design, it is crucial to understand grease macro flow phenomena in ball bearings taking into account non-Newtonian property of grease. In the current study, grease macro flow phenomena were investigated based on experimental and numerical works as a preliminary study. Grease dam breaking was defined as a benchmark problem and its collapsing phenomena were experimentally observed. As for the numerical work, a basic algorithm to simulate non-Newtonian grease macro flows was developed based on the explicit MPS (Moving Particle Simulation) method coupled with Bingham pseudoplastic fluid model. The observed grease dam breaking behavior was simulated by the developed numerical approach and the numerical results showed a good agreement with the corresponding experimental data.