發(fā)布時(shí)間：2018-01-15 18:35

  本文關(guān)鍵詞：基于不同流變模型的等溫線接觸彈流潤滑分析　出處：《潤滑與密封》2017年09期 　論文類型：期刊論文

  更多相關(guān)文章： 線接觸 流變模型 彈流潤滑 油膜厚度

【摘要】：選取Ree-Eyring流體、Bair-Winer流體和Carreau流體建立非牛頓流體等溫彈流潤滑模型,研究不同流變模型對(duì)最小膜厚和中心膜厚影響,并與Newton流體進(jìn)行比較,同時(shí)討論環(huán)境黏度對(duì)油膜壓力和膜厚的影響。結(jié)果表明:基于Carreau流變模型得到的最小膜厚與實(shí)測結(jié)果最吻合;與Newton流體模型相比,Carreau流變模型和Ree-Eyring流變模型得到的油膜中心厚度較高,其中Carreau流變模型的油膜中心厚度最高,Bair-Winer流變模型得到的中心膜厚最小;與Roelands黏壓模型相比,采用Doolittle自由體積黏壓模型在中心區(qū)域產(chǎn)生較低的黏度;環(huán)境黏度高的潤滑油油膜厚度增加,第二壓力峰值也增大。
[Abstract]:The isothermal elastohydrodynamic lubrication model of non-Newtonian fluid is established by selecting Ree-Eyring fluid Bair-Winer fluid and Carreau fluid. The effects of different rheological models on the minimum and central thickness of the film were studied and compared with the Newton fluid. The effect of environmental viscosity on oil film pressure and film thickness is also discussed. The results show that the minimum film thickness based on Carreau rheological model is the most consistent with the measured results. Compared with the Newton fluid model and the Ree-Eyring rheological model, the oil film center thickness is higher than that obtained by the Carreau rheological model and the Ree-Eyring rheological model. The oil film center thickness of Carreau rheological model is the highest and the central film thickness obtained by Bair-Winer rheological model is the smallest. Compared with the Roelands visco-compression model, the Doolittle free volume visco-compression model produces lower viscosity in the center region. The film thickness of lubricating oil increases with high ambient viscosity, and the second pressure peak increases.
【作者單位】： 湖北工業(yè)大學(xué)湖北省農(nóng)業(yè)機(jī)械工程研究設(shè)計(jì)院;東風(fēng)汽車股份有限公司;
【基金】：國家自然科學(xué)基金項(xiàng)目(51405142) 湖北工業(yè)大學(xué)高層次人才基金資助項(xiàng)目
【分類號(hào)】：TH117.2
【正文快照】： 自從20世紀(jì)中期DOWSON和HIGGINSON[1]對(duì)線接觸彈流潤滑問題研究以來,國內(nèi)外學(xué)者對(duì)點(diǎn)、線接觸問題進(jìn)行了大量理論和試驗(yàn)研究。LEE和HAM-ROCK[2]采用圓流變模型研究了滑滾比、極限剪切強(qiáng)度等對(duì)等溫線接觸彈流潤滑的影響;JACOBSON和HAMMROCK[3]用理想黏塑性流變模型研究了低滑滾

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