【摘要】：本文主要實現(xiàn)了彈流油膜界面滑移現(xiàn)象的定量測量并以此為依據(jù)研究了往復運動條件下油膜的動態(tài)響應特性。 改進了光彈流實驗臺的運動控制系統(tǒng)，即用VisualBasic語言對運動控制卡進行編程，實現(xiàn)了微尺度內的高精度往復運動以及步進運動和多段運動等運動方式。滿足了實驗對于不同工況的需要。 理論計算了卷吸運動的初始時刻封油核心的壓力分布。用彈性變形矩陣和測得的油膜厚度求解油膜的壓力，，迭代得到收斂的壓力值，為分析壓力分布對界面滑移的影響做準備。 實驗研究了彈流接觸區(qū)內油膜的界面滑移現(xiàn)象，通過追蹤封油核心的運動位移實現(xiàn)了滑移長度的定量測量。系統(tǒng)分析了壓力、初始封油深度、卷吸速度等不同因素對滑移長度的影響。 測量了界面滑移條件下往復運動彈流潤滑的油膜特征，實驗研究了載荷、振幅、頻率和界面條件等不同因素對往復動態(tài)彈流油膜的影響。特別地，當采用油/SiO2界面和鋼球微振幅往復運動條件下，沖擊油膜的封油核心的振動振幅明顯衰減，且發(fā)生半個周期的相差。
[Abstract]:In this paper, the quantitative measurement of the slip phenomenon at the interface of elastohydrodynamic oil film is carried out and the dynamic response of the oil film under reciprocating motion is studied. In this paper, the motion control system of the photoelastic fluid experiment bench is improved, that is, the motion control card is programmed with VisualBasic language, and the high precision reciprocating motion, step motion and multi-segment motion are realized in the micro-scale. The experimental results meet the needs of different working conditions. The pressure distribution of the oil sealing core at the initial stage of the entrainment motion is calculated theoretically. The pressure of oil film is calculated by using the elastic deformation matrix and the measured oil film thickness, and the convergent pressure value is obtained iteratively, so as to prepare for the analysis of the influence of pressure distribution on interfacial slip. The interfacial slip of oil film in elastohydrodynamic contact region is studied experimentally. The quantitative measurement of slip length is realized by tracking the moving displacement of the oil sealing core. The effects of pressure, initial oil sealing depth and entrainment speed on the slip length are systematically analyzed. The oil film characteristics of elastohydrodynamic lubrication in reciprocating motion under the condition of interfacial slip were measured. The effects of load amplitude frequency and interface conditions on the oil film of reciprocating dynamic elastohydrodynamic were investigated experimentally. In particular, under the conditions of oil / SiO2 interface and the reciprocating motion of steel ball micro-amplitude, the vibration amplitude of the oil sealing core of oil film impingement obviously attenuates, and the difference of half period occurs.
【學位授予單位】：青島理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH117

【參考文獻】

相關期刊論文 前9條

1 申輝陽;;零位刷新實現(xiàn)往復運動控制[J];電氣自動化;1999年05期

2 郭勁;;一種實現(xiàn)高頻往復運動的新型液壓機構的理論分析與實驗研究[J];光學機械;1989年02期

3 石成霞;王靜;兼田楨宏;楊沛然;;單粗糙峰對線接觸往復運動下熱彈流潤滑特性的影響[J];煤礦機械;2010年05期

4 李傳敏;劉曉玲;;液壓系統(tǒng)中往復運動密封分析[J];煤礦機械;2010年05期

5 林子光,李修仁,劉維民,余來貴,夏延秋;往復運動機構的摩擦過渡[J];潤滑與密封;2001年03期

6 付忠學;郭峰;王學鋒;楊萍;;點接觸潤滑狀態(tài)轉化的實驗觀察[J];潤滑與密封;2006年07期

7 王龍;楊志強;王靜;;滑滾比對于線接觸往復運動工況的影響[J];潤滑與密封;2008年11期

8 張順成;邱澍;;往復運動密封機理分析[J];成都科技大學學報;1990年03期

9 徐從裕;分段往復運動的定位精度及控制方法[J];新技術新工藝;1998年06期

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