本文關(guān)鍵詞： 微型空氣箔片軸承 有限差分法 滑移流 靜動(dòng)態(tài)特性　出處：《機(jī)械工程學(xué)報(bào)》2017年17期 　論文類型：期刊論文

【摘要】：針對(duì)新型彈性支承微型箔片動(dòng)壓軸承的彈性結(jié)構(gòu),提出了剛度預(yù)測(cè)模型,并搭載靜態(tài)剛度測(cè)試試驗(yàn)臺(tái),驗(yàn)證了計(jì)算模型的正確性。通過(guò)耦合彈性結(jié)構(gòu)剛度模型和考慮一階滑移流的雷諾方程,研究了在滑移流影響下的軸承的靜、動(dòng)態(tài)特性。發(fā)現(xiàn)在定轉(zhuǎn)速下,隨著載荷的增加,滑移流對(duì)于軸承的偏心率和最小氣膜厚度的影響逐漸增大;隨著轉(zhuǎn)速的增加軸承剛度逐漸增加,阻尼則逐漸減小;在滑移流影響下軸承剛度減小,阻尼增加。彈性支承結(jié)構(gòu)的厚度和單元個(gè)數(shù)對(duì)于靜動(dòng)態(tài)結(jié)果影響明顯。
[Abstract]:In view of the elastic structure of a new type of elastic support micro foil dynamic bearing, a stiffness prediction model is proposed, and a static stiffness test rig is built. The validity of the calculation model is verified. The static and dynamic characteristics of bearing under the influence of slip flow are studied by coupling the stiffness model of elastic structure and the Reynolds equation considering the first order slip flow. With the increase of load, the influence of slip flow on the eccentricity ratio and the minimum film thickness of bearing increases gradually. With the increase of rotational speed, the stiffness of bearing increases gradually, and the damping decreases gradually. Under the influence of slip flow, the bearing stiffness decreases and the damping increases, and the thickness and the number of elements of the elastic support structure have obvious influence on the static and dynamic results.
【作者單位】： 湖南大學(xué)汽車車身先進(jìn)設(shè)計(jì)制造國(guó)家重點(diǎn)實(shí)驗(yàn)室;同濟(jì)大學(xué)汽車學(xué)院;同濟(jì)大學(xué)新能源汽車工程中心;
【基金】：國(guó)家自然科學(xué)基金(51575170) 國(guó)家科技部科技支撐計(jì)劃(2015BAG06B01)資助項(xiàng)目
【分類號(hào)】：TH133.3
【正文快照】： 0前言*近年來(lái)隨著微型飛行器的推進(jìn)系統(tǒng)、燃料電池的空氣補(bǔ)給管理系統(tǒng)、各類機(jī)器人的渦輪發(fā)電機(jī)等微型渦輪機(jī)械和微動(dòng)力機(jī)電系統(tǒng)的發(fā)展,作為這些設(shè)備核心技術(shù)的高速軸承得到了越來(lái)越多的關(guān)注[1]。由于設(shè)備尺寸和功率都較小,所以需要用于支承轉(zhuǎn)子的軸承具有超高轉(zhuǎn)速、低損耗的，

本文編號(hào)：1488830