本文關鍵詞： 微型空氣箔片軸承 有限差分法 滑移流 靜動態(tài)特性　出處：《機械工程學報》2017年17期 　論文類型：期刊論文

【摘要】：針對新型彈性支承微型箔片動壓軸承的彈性結構,提出了剛度預測模型,并搭載靜態(tài)剛度測試試驗臺,驗證了計算模型的正確性。通過耦合彈性結構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、動態(tài)特性。發(fā)現(xiàn)在定轉速下,隨著載荷的增加,滑移流對于軸承的偏心率和最小氣膜厚度的影響逐漸增大;隨著轉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。彈性支承結構的厚度和單元個數(shù)對于靜動態(tài)結果影響明顯。
[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】： 湖南大學汽車車身先進設計制造國家重點實驗室;同濟大學汽車學院;同濟大學新能源汽車工程中心;
【基金】：國家自然科學基金(51575170) 國家科技部科技支撐計劃(2015BAG06B01)資助項目
【分類號】：TH133.3
【正文快照】： 0前言*近年來隨著微型飛行器的推進系統(tǒng)、燃料電池的空氣補給管理系統(tǒng)、各類機器人的渦輪發(fā)電機等微型渦輪機械和微動力機電系統(tǒng)的發(fā)展,作為這些設備核心技術的高速軸承得到了越來越多的關注[1]。由于設備尺寸和功率都較小,所以需要用于支承轉子的軸承具有超高轉速、低損耗的，

本文編號：1488830