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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 蘇侃 | |
dc.contributor.author | Chung-Hsien Wu | en |
dc.contributor.author | 吳崇献 | zh_TW |
dc.date.accessioned | 2021-06-13T15:36:46Z | - |
dc.date.available | 2010-07-16 | |
dc.date.copyright | 2008-07-16 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-10 | |
dc.identifier.citation | 1. Williams J. A., Engineering Tribology, 1994, Oxford university press Inc., New York.
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Smeeth, M. and Spikes, H. A.“Boundary Film Formation by Viscosity Index Improvers”, Tribology transactions, Vol 39, n3, 1996, pp. 726-734 15. Smeeth, M., Spikes, H.A. and Gunsel, S. “The formation of viscous surface films by polymer solutions:boundary or elastohydrodynamic lubrication”, Tribology transactions, vol 39, n3, 1996, pp. 720-725 16. Guangteng, G. and Spikes, H. A. “The Control of friction by molecular fractionation of base fluid mixtures at metal surfaces”, Tribology Transactions, Vol 40,n3, 1997, pp. 461-469 17. Cho, Y. K., Cai, L. and Granick, S., “Molecular Tribology of lubricants and additives,” Tribology international, Vol. 30, 1997, pp. 889-894. 18. Greenwood, J. A. and Kauzlarich, J.J., “Elastohydrodynamic film thickness for shear-thinning lubricants,” Journal of engineering tribology, Vol. 212, 1998, pp. 179-191. 19. Bair, S., Jarzynski, J. and Winer, W.O. “The temperature pressure and time dependence of lubricant viscosity” Tribology international, Vol 34, n7, 2001, pp. 461-468 20. Kaneta, M. and Yang, P. “Effects of thermal conductivity of contacting surfaces on point EHL contacts”, Journal of tribology, Vol 125, n4, 2003, pp. 731-738 21. Tallian T. E., “The theory of partial elastohydrodynamic contacts,” Wear, Vol. 21, 1972, pp. 49-101. 22. Evans, H. P., and Snidle, R. W., “The elastohydrodynamic lubrication of point contacts at heavy loads,” Mathematical and physical sciences, Vol. 389, 1982, pp. 183-199. 23. Gecim, B. A., “Non-newtonian Effect of Multigrade Oils on Journal Bearing Performance”, Tribology transactions, vol 33, n3, 1990, pp. 384-394 24. Tichy, J. A., “Modeling of thin film lubrication,” Tribology transactions, Vol. 38, 1995, pp. 108-118. 25. Jalali-Vahid, D., Rahnejat, H., Gohar, R. and Jin, Z. M., “Comparison between experiments and numerical solutions for isothermal elastohydrodynamic point contacts,” Journal of physics d: applied physics. Vol. 31, 1998, pp. 2725-2732 26. Roberts, G.. P., Barnes, H. A., Carew, P., “Modeling the flow behaviour of very shear-thinning liquids,” Chemical engineering science, Vol. 56, 2001, pp. 5617-5623 27. So H and Chen C. H., “Effects of micro-wedges formed between parallel surfaces on mixed lubrication – Part II:Modelling,” Tribology letters, Vol. 19, 2005, pp. 83-91. 28. Hertz, H., “Uber die Beruhrung fester elasticher Korper,” J. rein und angewandte Mathematik., Vol. 92, 1882, pp.156-171. 29. Hills, D. A., Nowell, D. and Sackfield, A., Mechanics of Elastic Contacts, 1993, Butterworth-Heinemann Ltd., Boston. 30. Burwell, J. T. and Leszek, W. J., “The incremental friction coefficient,” Journal of applied physics, Vol. 20, 1949, pp. 79-89. 31. 林原慶, “ZDDP添加劑在邊界潤滑狀態下的抗磨耗研究,” 國立臺灣大學機械工程研究所博士論文, 1993. 32. Hamrock B. J. and Dowson D., “Isothermal elastohydrodynamic Lubrication of point contacts. Part III – Fully flooded results, ” Journal of lubrication technology, Transactions ASME, Vol. 99 ser F, 1977, pp. 264-276. 33. Spikes, H.A., “Thin films in elastohydrodynamic lubrication:the contribution of experiment”, IMechE, Vol 213, 1991, pp. 335-352 34. 詹明祥, “以實驗探討在不同滑滾比之下二圓盤的薄膜潤滑情形”, 國立台灣大學機械工程研究所碩士論文, 2008. 35. Brandlein, J., Eschmann, P., Hasbargen, L. and Weigand, K. “Ball and roller bearings:theory, design and application”, third edition, 1999, John Wiley & Sons, Inc., New York. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37648 | - |
dc.description.abstract | 本研究初步先修改現有試驗機,使其足以符合在彈液動潤滑條件下量測摩擦扭力的需要。接著藉量測點接觸相同表面速度和但不同滑滾比的摩擦扭力、不同表面速度但相同滑滾比的摩擦扭力,以及觀察其磨耗情形,分析滑滾比及表面速度和對潤滑情形的影響。結果發現滑滾比及表面速度和的增加均會造成摩擦力下降的趨勢,然而由其破壞條件及相同條件的表面狀況觀之,則發現滑滾比及表面速度和的增加均使油膜承載力降低。
藉過去的相關研究及理論,可推斷剪率的增加,超越了油膜層流所產生的極限剪應力,促使油膜分層,發生不連續的速度梯度,降低承載力,進而產生表面破壞。 | zh_TW |
dc.description.abstract | In order to measure the frictional torque under elastohydrodynamic lubrication condition, this study is to modify a tribological tester which we already have. Then using this tester, the effect of the sum of surface speed and slip ratio on the friction coefficient and load carrying capacity of the oil films generated between point contact can be evaluated by the wear conditions of the tested specimens under elastohydrodynamic conditions. The experimental results show that the increase in sliding-rolling ratio and the sum of surface speed not only caused the friction coefficient between specimens to decrease, but also caused the specimens to be worn more easily.
This result means that the load carrying capacity of the oil film decreases as the sliding-rolling ratio and the sum of surface speed between two disc specimens in elliptic contact increases. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T15:36:46Z (GMT). No. of bitstreams: 1 ntu-97-R95522516-1.pdf: 3548830 bytes, checksum: a0b87199c282936243ee4a240c543093 (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 中文摘要………………………………………………………………………………Ⅰ
英文摘要………………………………………………………………………………Ⅱ 目錄……………………………………………………………………………………Ⅲ 圖表目錄………………………………………………………………………………Ⅵ 符號說明………………………………………………………………………………Ⅹ 第一章 緒論…………………………………………………………………………1 1-1 簡介…………………………………………………………………………1 1-2 相關文獻回顧……………………..………………………………………………4 1-2-1 潤滑失效模式相關文獻………………………………………………5 1-2-2 流變性質相關文獻……………………………………………………7 1-2-3 以數值方法計算的相關文獻…………………………………………8 第二章 實驗相關理論……………………………………………………………10 2-1 表面粗糙度………………………………………………………………………10 2-2 表面接觸應力……………………………………………………………………10 2-3 液動承載力………………………………………………………………………12 2-4 潤滑模式…………………………………………………………………………13 2-4-1 液動潤滑………………………………………………………………14 2-4-2 邊界潤滑………………………………………………………………14 2-4-3 混合潤滑…………………………………………………………15 2-4-4 彈液動潤滑…………………………………………………………15 2-5 黏度………………………………………………………………………………18 2-6 影響潤滑狀況的參數………………………………………………………19 2-6-1 表面粗度的影響…………………………………………………………19 2-6-2 表面滑動速度的影響……………………………………………………20 2-6-3 滑滾比的影響…..…………………………………………………………23 2-6-4 溫度的影響………………………………………………………………25 2-6-5 剪切稀化的影響………..…………………………………………………28 第三章 實驗設備與方法………………………………………………………30 3-1 實驗目的…………………………………………………………………………30 3-2 試驗機之設計……………………………………………………………………30 3-2-1 試驗機主要設計………………………………………………………30 3-2-2 軸承摩擦扭力量測設計…………………………………………………33 3-2-3 扭力計………………..……………………………………………………35 3-2-4 荷重計……………..………………………………………………………36 3-3 實驗條件與試片規格…………………………………………………………37 3-3-1 試片規格………………………………………………………………37 3-3-2 潤滑油性質……………………………………………………………41 3-3-3 加載時間間隔…………………………………………………………42 3-4 實驗方法…………………………………………………………………………43 3-4-1 試片試驗………………………………………………………………43 3-4-2 軸承試驗………………………………………………………………43 第四章 結果與討論………………………………………………………………44 4-1 軸承之影響………………………………………………………………………44 4-2 表面粗糙度的影響………………………………………………………………46 4-3 滑滾比的影響……………………………………………………………………46 4-3-1摩擦係數量測………………………………………………………….…46 4-3-2表面磨耗狀況………………………………………………………….…47 4-3-3小結…………………………………………………………………….…52 4-4 表面速度和的影響………………………………………………………………54 4-4-1表面粗糙度較小之試片實驗結果………………………………….…54 4-4-2表面粗糙度較大之試片實驗結果………………………………….…55 4-4-3小結…………………………………………………………………….…58 4-5 時間的影響…….………………………………………………………………59 第五章 結論與建議………………………………………………………………60 5-1 結論………………………………………………………………………………60 5-2 建議未來研究方向………………………………………………………………60 參考文獻……………………………………………………………………………61 | |
dc.language.iso | zh-TW | |
dc.title | 不同滑滾比下點接觸之薄膜潤滑狀態 | zh_TW |
dc.title | Thin Film Lubrication of Point Contact in Different Slip Ratios | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 林原慶,胡致中 | |
dc.subject.keyword | 磨潤,彈液動潤滑,滑滾比,表面速度和,極限剪應力, | zh_TW |
dc.subject.keyword | Tribology,EHL,Thin-film lubrication,Shear-thinning,Limiting shear stress, | en |
dc.relation.page | 64 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-10 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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