本文選題：圓柱齒輪　切入點(diǎn)：有限長線接觸　出處：《南京航空航天大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：圓柱齒輪具有傳動效率高、結(jié)構(gòu)緊湊、承載能力大等優(yōu)點(diǎn),因此被廣泛應(yīng)用于船舶、汽車、航空等領(lǐng)域。潤滑失效是圓柱齒輪傳動失效的主要方式之一,而油膜破裂導(dǎo)致金屬固體直接接觸,產(chǎn)生局部高溫,容易形成齒面磨損、膠合等失效形式。目前,齒輪的摩擦、磨損及潤滑問題的研究已成為新的熱點(diǎn)研究區(qū)域。本文以圓柱齒輪副為研究對象,基于有限長線接觸模型,開展其非牛頓流體熱彈流潤滑研究,為齒輪參數(shù)設(shè)計提供摩擦學(xué)理論依據(jù),具有一定的理論意義和工程應(yīng)用價值。本文主要從以下五方面開展工作:1)圓錐滾子接觸副的彈流潤滑數(shù)值研究。以圓錐滾子與無限大剛性平面接觸模型為研究對象,研究其壓力、膜厚和溫度的分布情況,分析不同工況下摩擦系數(shù)的變化規(guī)律,為斜齒輪傳動的潤滑分析提供理論基礎(chǔ)。2)直齒輪副非牛頓流體熱彈流潤滑數(shù)值研究。針對直齒輪副彈流潤滑模型,考慮流體的非牛頓特性、時變效應(yīng)以及熱效應(yīng),研究工況參數(shù)對其摩擦特性的影響。3)斜齒輪副牛頓流體等溫彈流潤滑數(shù)值研究。將斜齒輪嚙合等效為兩個反向圓錐接觸的潤滑模型,結(jié)合嚙合過程中曲率半徑、卷吸速度、滑滾比以及載荷分配的變化規(guī)律,研究斜齒輪在不同接觸位置及嚙合位置的潤滑特性,分析工況參數(shù)對斜齒輪副潤滑性能的影響。4)斜齒輪副非牛頓流體熱彈流潤滑數(shù)值研究。在斜齒輪副牛頓流體潤滑研究基礎(chǔ)上,考慮流體的非牛頓特性以及熱效應(yīng)對其斜齒輪副潤滑性能的影響,應(yīng)用多重網(wǎng)格法進(jìn)行求解,獲得其潤滑特性參數(shù),分析工況參數(shù)對摩擦系數(shù)的影響規(guī)律。5)有限長線接觸彈流潤滑試驗研究。利用摩擦磨損試驗機(jī)測量圓錐滾子與圓盤接觸潤滑的摩擦系數(shù),且與理論結(jié)果對比分析,以驗證前文有限長線接觸理論研究的正確性。
[Abstract]:Cylindrical gears have the advantages of high transmission efficiency, compact structure and large bearing capacity, so they are widely used in ship, automobile, aviation and other fields. Lubrication failure is one of the main methods of cylindrical gear transmission failure. However, oil film rupture leads to direct contact of metal solids, resulting in local high temperature. It is easy to form tooth surface wear, adhesion and other failure forms. At present, the friction of gears, The study of wear and lubrication has become a new hot research area. In this paper, the non-Newtonian fluid thermo-elastohydrodynamic lubrication is studied on the basis of finite length linear contact model. It provides the tribological theory basis for gear parameter design. This paper mainly studies the elastohydrodynamic lubrication of cone roller contact pair in the following five aspects. The contact model between cone roller and infinite rigid plane is taken as the object of study. The distribution of pressure, film thickness and temperature is studied, and the variation law of friction coefficient under different working conditions is analyzed. This paper provides a theoretical basis for lubrication analysis of helical gear transmission. (2) numerical study of non-Newtonian fluid thermo-elastohydrodynamic lubrication of spur gear pair. The non-Newtonian characteristic, time-varying effect and thermal effect of fluid are considered for the elastohydrodynamic lubrication model of spur gear pair. Study on the influence of working condition parameters on the friction characteristics of helical gear pair numerical study of Newtonian fluid isothermal elastohydrodynamic lubrication. The meshing of helical gear is equivalent to that of two reverse cone contact lubrication models combined with curvature radius and entrainment speed during meshing. The lubricating characteristics of helical gears at different contact positions and meshing positions are studied according to the variation of slip roll ratio and load distribution. Analysis of the influence of working condition parameters on the Lubrication performance of Helical Gear pair. (4) numerical study on Non-Newtonian fluid Thermal Elastohydrodynamic Lubrication of Helical Gear pair. Based on the study of Helical Gear pair Newtonian fluid Lubrication, Considering the non-Newtonian characteristics of the fluid and the influence of thermal effect on the lubrication performance of the helical gear pair, the multiple mesh method is used to solve the problem, and the lubrication characteristic parameters are obtained. The friction coefficient of contact lubrication between taper roller and disc is measured by friction and wear test machine, and the results are compared with the theoretical results. In order to verify the correctness of the previous finite line contact theory.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TH132.41

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