發(fā)布時(shí)間：2018-06-16 23:19

  本文選題：微點(diǎn)蝕坑 + 微凸起��； 參考：《青島理工大學(xué)》2011年碩士論文

【摘要】：本文針對(duì)漸開(kāi)線(xiàn)直齒圓柱齒輪，通過(guò)建立表面微點(diǎn)蝕坑和表面微凸起數(shù)學(xué)模型，應(yīng)用多重網(wǎng)格法和多重網(wǎng)格積分法，充分考慮到非牛頓流體的時(shí)變效應(yīng)、熱效應(yīng)，以及工作材料的表面磨損現(xiàn)象，重點(diǎn)求解了齒輪嚙合過(guò)程中的熱彈流潤(rùn)滑數(shù)值解。具體內(nèi)容包括四部分：表面微點(diǎn)蝕單坑對(duì)漸開(kāi)線(xiàn)直齒圓柱齒輪熱彈流潤(rùn)滑的影響；表面連續(xù)微點(diǎn)蝕坑對(duì)漸開(kāi)線(xiàn)直齒輪熱彈流潤(rùn)滑的影響；漸開(kāi)線(xiàn)直齒輪表面磨損的熱彈流潤(rùn)滑數(shù)值分析；動(dòng)載荷作用下的連續(xù)沖擊對(duì)齒輪熱彈流潤(rùn)滑的影響分析。 首先，根據(jù)漸開(kāi)線(xiàn)直齒輪的幾何和運(yùn)動(dòng)關(guān)系，在齒面上考慮有一單個(gè)微點(diǎn)蝕坑，建立了漸開(kāi)線(xiàn)直齒輪的非牛頓時(shí)變熱彈流潤(rùn)滑模型；應(yīng)用多重網(wǎng)格技術(shù)，通過(guò)改變微點(diǎn)蝕坑的弧度及坑深得到了不同形貌的凹坑，模擬微點(diǎn)蝕初期的發(fā)展過(guò)程，，得到了單個(gè)微點(diǎn)蝕坑作用下的漸開(kāi)線(xiàn)直齒圓柱齒輪嚙合全過(guò)程時(shí)變熱彈流潤(rùn)滑的完全數(shù)值解。 其次，考慮齒面上存在有連續(xù)微點(diǎn)蝕坑現(xiàn)象，求得了齒輪嚙合過(guò)程的熱解，分析了微點(diǎn)蝕坑對(duì)齒輪的潤(rùn)滑作用效果；通過(guò)改變功率大小來(lái)間接改變載荷大小，研究了載荷對(duì)表面存在連續(xù)微點(diǎn)蝕坑的漸開(kāi)線(xiàn)直齒輪的熱彈流潤(rùn)滑的影響。 然后，在以往表面粗糙度的研究基礎(chǔ)上，對(duì)兩齒面表面微凸起在不同磨損程度下的熱解進(jìn)行了數(shù)值分析，求解了兩齒面間表面微凸起磨損程度相同時(shí)的油膜壓力、膜厚、溫升以及摩擦系數(shù)等；對(duì)兩齒面磨損程度不一致時(shí)沿嚙合線(xiàn)的油膜的中心壓力和膜厚變化、幾個(gè)特殊嚙合點(diǎn)的壓力和膜厚的變化進(jìn)行了對(duì)比分析。 最后，在嚙合過(guò)程中加入了動(dòng)載荷作用下的連續(xù)脈沖沖擊，改變沖擊波的脈沖頻率和脈沖幅值，求解了嚙合過(guò)程中連續(xù)沖擊作用下的完全數(shù)值熱解。
[Abstract]:In this paper, for involute spur gears, by establishing mathematical models of surface micro-pitting pits and surface micro-protrusions, using multi-grid method and multi-grid integration method, the time-varying and thermal effects of non-Newtonian fluids are fully considered. The numerical solution of thermo-elastohydrodynamic lubrication during gear meshing is mainly solved. The specific contents include four parts: the influence of surface micropitting single pit on thermal elastohydrodynamic lubrication of involute spur gear, the effect of surface continuous micro-pitting pit on thermal elastohydrodynamic lubrication of involute spur gear, and the influence of surface micropitting pit on thermal elastohydrodynamic lubrication of involute spur gear. The surface wear of involute spur gear is numerically analyzed by thermo-elastohydrodynamic lubrication, and the influence of continuous impact on the thermo-elastohydrodynamic lubrication of involute spur gear is analyzed. Firstly, according to the geometry and motion relationship of involute spur gear, a single micro-pitting pit is considered on the tooth surface, and a non-uniform thermo-elastohydrodynamic lubrication model of involute spur gear is established. By changing the arc and depth of the micro-pitting pit, the pits with different morphologies are obtained, and the development process of the micropitting initial stage is simulated. A complete numerical solution of involute spur gear meshing with time-varying thermal elastohydrodynamic lubrication under the action of a single micro-pitting pit is obtained. Secondly, considering the existence of continuous micro-pitting on the tooth surface, the pyrolysis of gear meshing process is obtained, the lubricating effect of the micro-pitting pit on gear is analyzed, and the load size is indirectly changed by changing the power. The effect of load on thermo-elastohydrodynamic lubrication of involute spur gears with continuous micro-pitting pits on the surface was studied. Then, on the basis of the previous research on surface roughness, the pyrolysis of micro-protrusions on two tooth surfaces under different wear degrees is analyzed, and the oil film pressure and film thickness are solved when the wear degree of micro-protrusions between two tooth surfaces is the same. The variation of the central pressure and thickness of the oil film along the meshing line and the variation of the pressure and thickness of the film at several special meshing points when the wear degree of the two tooth surfaces is different is analyzed. Finally, continuous pulse shock under dynamic load is added in the meshing process, the pulse frequency and pulse amplitude of the shock wave are changed, and the complete numerical pyrolysis under the continuous impact during meshing process is solved.
【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】：2011
【分類(lèi)號(hào)】：TH132.413

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張俊華,王丹,皮亞南;閉式齒輪傳動(dòng)齒面疲勞點(diǎn)蝕和剝落的分析[J];江西科學(xué);2003年01期

2 趙菊初;漸開(kāi)線(xiàn)齒輪點(diǎn)蝕成因新釋[J];機(jī)械設(shè)計(jì);2002年07期

3 姚熊亮;孫士麗;陳玉;;高頻動(dòng)載軸承內(nèi)油膜壓力特性[J];機(jī)械工程學(xué)報(bào);2010年17期

4 梅雪松，陶濤;載荷對(duì)凹陷表面的動(dòng)態(tài)微彈流潤(rùn)滑特征的影響[J];機(jī)械工程學(xué)報(bào);1997年03期

5 楊卓娟,韓志武,任露泉;激光處理凹坑形仿生非光滑表面試件的高溫摩擦磨損特性研究[J];摩擦學(xué)學(xué)報(bào);2005年04期

6 郭峰,楊沛然,常秋英;等溫線(xiàn)接觸彈流潤(rùn)滑求解的多重網(wǎng)格技術(shù)[J];青島建筑工程學(xué)院學(xué)報(bào);1998年03期

7 賀治成;楊萍;王優(yōu)強(qiáng);;粗糙峰和粗糙谷對(duì)直齒圓柱齒輪熱彈流潤(rùn)滑的影響[J];潤(rùn)滑與密封;2007年07期

8 歷建全;朱華;;表面織構(gòu)及其對(duì)摩擦學(xué)性能的影響[J];潤(rùn)滑與密封;2009年02期

9 卞榮;王優(yōu)強(qiáng);;單粗糙峰對(duì)直齒圓柱齒輪熱彈流潤(rùn)滑的影響[J];潤(rùn)滑與密封;2009年05期

10 盧立新,張和豪;基于動(dòng)載荷的齒輪傳動(dòng)系統(tǒng)瞬態(tài)彈流潤(rùn)滑分析[J];無(wú)錫輕工大學(xué)學(xué)報(bào);2000年04期

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