階梯型形貌潤(rùn)滑機(jī)理的研究
發(fā)布時(shí)間：2018-10-12 14:56
【摘要】：本學(xué)位論文主要對(duì)滑塊軸承表面的階梯幾何形貌產(chǎn)生的潤(rùn)滑效應(yīng)進(jìn)行了實(shí)驗(yàn)和理論研究，，并對(duì)亞微米膜厚時(shí)階梯軸承承載機(jī)理進(jìn)行了探索。使用FST-I型面接觸潤(rùn)滑油膜測(cè)量系統(tǒng)研究對(duì)不同階梯形貌下滑塊軸承的油膜厚度進(jìn)行了測(cè)量，同時(shí)利用Fluent流體分析軟件對(duì)接觸區(qū)流體運(yùn)動(dòng)進(jìn)行了模擬，對(duì)試驗(yàn)結(jié)果進(jìn)行了理論分析。完成的工作包括： （1）學(xué)習(xí)了FST-I型面接觸潤(rùn)滑油膜測(cè)量系統(tǒng)的工作原理和測(cè)量技術(shù)。對(duì)光源系統(tǒng)進(jìn)行了更新，并且探索了階梯型滑塊平行油膜的實(shí)驗(yàn)測(cè)量技術(shù)。 （2）通過(guò)油膜厚度的測(cè)量，分別研究了階梯寬度、深度、傾角、位置和數(shù)量對(duì)軸承特性的影響。結(jié)果表明，階梯最優(yōu)寬度比例約為0.75；階梯結(jié)構(gòu)的深度與油膜的厚度有直接的關(guān)系，當(dāng)膜厚很低時(shí)，階梯的深度對(duì)承載力的影響較大；平行條件下階梯傾角為0°時(shí)的具有最優(yōu)的承載力；并不是說(shuō)階梯的數(shù)量越多越好，也存在一個(gè)最優(yōu)的情況，其中Step-Groove的潤(rùn)滑特性最好；階梯結(jié)構(gòu)在中間時(shí)不具有承載力。 （3）在大膜厚范圍內(nèi)對(duì)階梯軸承的承載機(jī)理進(jìn)行了研究，得到的速度膜厚曲線分為三個(gè)區(qū)域。低速下的第I區(qū)油膜厚度對(duì)速度無(wú)明顯依賴(lài)性，此時(shí)表面微觀形貌產(chǎn)生的局部流體動(dòng)壓效應(yīng)起主要作用；高速下的第II區(qū)油膜厚度與速度在對(duì)數(shù)坐標(biāo)下呈線性關(guān)系，此時(shí)階梯軸承的宏觀流體動(dòng)壓效應(yīng)起主要作用。中間的過(guò)渡區(qū)油膜厚度發(fā)生跳躍性增長(zhǎng)。 （4）利用Fluent對(duì)階梯滑塊的承載進(jìn)行了數(shù)值模擬計(jì)算，得到了與試驗(yàn)結(jié)果相一致的結(jié)論。通過(guò)用正弦曲線模擬表面微觀相貌，進(jìn)行數(shù)值模擬計(jì)算，得到的模擬結(jié)果與理論值基本一致，從而證實(shí)了我們對(duì)試驗(yàn)結(jié)論的推測(cè)。
[Abstract]:In this dissertation, the lubrication effect of stepped geometry on the surface of sliding block bearing is studied experimentally and theoretically, and the bearing mechanism of stepped bearing with submicron film thickness is explored. The oil film thickness of sliding block bearing was measured with FST-I contact lubricant film measurement system, and the fluid movement in contact area was simulated by Fluent fluid analysis software. The experimental results are theoretically analyzed. The main contents are as follows: (1) the working principle and measuring technology of FST-I surface contact lubricant film measuring system are studied. The light source system is updated, and the experimental measurement technology of the parallel oil film of the ladder slider is explored. (2) by measuring the thickness of the oil film, the width, depth and inclination of the ladder are studied, respectively. The effect of position and quantity on bearing characteristics. The results show that the optimum ratio of ladder width is about 0.75, the depth of ladder structure is directly related to the thickness of oil film, and when the film thickness is very low, the depth of step has a great influence on the bearing capacity. The optimum bearing capacity is obtained when the gradient angle is 0 擄in parallel condition, and it is not said that the more steps are the better, there is an optimal condition, in which the lubricating property of Step-Groove is the best. Step structure does not have bearing capacity in the middle. (3) the bearing mechanism of stepped bearing is studied in the large film thickness range, and the velocity film thickness curve is divided into three regions. The oil film thickness of the first region at low speed has no obvious dependence on the velocity, and the local hydrodynamic pressure effect caused by the surface microscopic morphology plays a major role, and the thickness of the oil film in the II region at high speed has a linear relationship with the velocity in logarithmic coordinates. At this point, the macro hydrodynamic pressure effect of step bearing plays a major role. The thickness of oil film in the intermediate transition zone increases by leaps and bounds. (4) the numerical simulation of the bearing capacity of the stepped slider is carried out by using Fluent, and the results are in agreement with the experimental results. By using sinusoidal curve to simulate the microcosmic appearance of the surface, the numerical simulation results are in good agreement with the theoretical values, which confirms our prediction of the experimental results.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH117.2
本文編號(hào)：2266560
[Abstract]:In this dissertation, the lubrication effect of stepped geometry on the surface of sliding block bearing is studied experimentally and theoretically, and the bearing mechanism of stepped bearing with submicron film thickness is explored. The oil film thickness of sliding block bearing was measured with FST-I contact lubricant film measurement system, and the fluid movement in contact area was simulated by Fluent fluid analysis software. The experimental results are theoretically analyzed. The main contents are as follows: (1) the working principle and measuring technology of FST-I surface contact lubricant film measuring system are studied. The light source system is updated, and the experimental measurement technology of the parallel oil film of the ladder slider is explored. (2) by measuring the thickness of the oil film, the width, depth and inclination of the ladder are studied, respectively. The effect of position and quantity on bearing characteristics. The results show that the optimum ratio of ladder width is about 0.75, the depth of ladder structure is directly related to the thickness of oil film, and when the film thickness is very low, the depth of step has a great influence on the bearing capacity. The optimum bearing capacity is obtained when the gradient angle is 0 擄in parallel condition, and it is not said that the more steps are the better, there is an optimal condition, in which the lubricating property of Step-Groove is the best. Step structure does not have bearing capacity in the middle. (3) the bearing mechanism of stepped bearing is studied in the large film thickness range, and the velocity film thickness curve is divided into three regions. The oil film thickness of the first region at low speed has no obvious dependence on the velocity, and the local hydrodynamic pressure effect caused by the surface microscopic morphology plays a major role, and the thickness of the oil film in the II region at high speed has a linear relationship with the velocity in logarithmic coordinates. At this point, the macro hydrodynamic pressure effect of step bearing plays a major role. The thickness of oil film in the intermediate transition zone increases by leaps and bounds. (4) the numerical simulation of the bearing capacity of the stepped slider is carried out by using Fluent, and the results are in agreement with the experimental results. By using sinusoidal curve to simulate the microcosmic appearance of the surface, the numerical simulation results are in good agreement with the theoretical values, which confirms our prediction of the experimental results.
【學(xué)位授予單位】：青島理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH117.2
【參考文獻(xiàn)】
相關(guān)期刊論文 前5條
1 薛群基;張俊彥;;潤(rùn)滑材料摩擦化學(xué)[J];化學(xué)進(jìn)展;2009年11期
2 姚華平;黃平;;平行運(yùn)動(dòng)的粗糙表面潤(rùn)滑承載性能研究[J];摩擦學(xué)學(xué)報(bào);2008年02期
3 楊沛然;;滾子間非定常潤(rùn)滑油膜狀態(tài)的研究[J];潤(rùn)滑與密封;1985年03期
4 秦穎;張小棟;;基于光纖位移傳感器的軸承最小油膜厚度的測(cè)量方法[J];潤(rùn)滑與密封;2006年04期
5 盧黎明;;基于超聲波的液體滑動(dòng)軸承潤(rùn)滑油厚度的測(cè)定[J];潤(rùn)滑與密封;2007年05期
相關(guān)碩士學(xué)位論文 前3條
1 馬沖;固定傾角滑塊軸承的潤(rùn)滑油膜厚度測(cè)量[D];青島理工大學(xué);2010年
2 袁思?xì)g;溝槽型表面織構(gòu)的摩擦特性研究[D];南京航空航天大學(xué);2011年
3 沈萬(wàn)輝;軟接觸及人工滑液的薄膜潤(rùn)滑特性研究[D];青島理工大學(xué);2010年
本文編號(hào)：2266560
本文鏈接：http://sikaile.net/kejilunwen/jixiegongcheng/2266560.html
最近更新
教材專(zhuān)著
