Gas foil bearings offer several advantages over traditionalbearing typ的繁体中文翻译

Gas foil bearings offer several adv

Gas foil bearings offer several advantages over traditionalbearing types that make them attractive for use in high-speedturbomachinery. They can operate at very high temperatures,require no lubrication supply (oil pumps, seals, etc.), exhibitvery long life with no maintenance, and once operatingairborne, have very low power loss. The use of gas foil bearingsin high-speed turbomachinery has been accelerating in recentyears, although the pace has been slow. One of the contributingfactors to the slow growth has been a lack of analysis tools,benchmarked to measurements, to predict gas foil bearingbehavior in rotating machinery. To address this shortcoming,NASA Glenn Research Center (GRC) has supported thedevelopment of analytical tools to predict gas foil bearingperformance. One of the codes has the capability to predictrotordynamic coefficients, power loss, film thickness, structuraldeformation, and more. The current paper presents anassessment of the predictive capability of the code, namedXLGFBTH (Texas A&M University). A test rig at GRC is usedas a simulated case study to compare rotordynamic analysisusing output from the code to actual rotor response as measuredin the test rig. The test rig rotor is supported on two gas foiljournal bearings manufactured at GRC, with all pertinentgeometry disclosed. The resulting comparison shows that therotordynamic coefficients calculated using XLGFBTH representthe dynamics of the system reasonably well, especially as theypertain to predicting critical speeds.
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结果 (繁体中文) 1: [复制]
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氣箔軸承與傳統<br>軸承類型相比具有幾個優點,這使其在高速<br>渦輪機械中具有吸引力。它們可以在非常高的溫度下運行,<br>無需潤滑(油泵,密封件等),<br>使用壽命長,無需維護,並且在<br>機載運行時,功率損耗非常低。<br>近年來<br>,儘管速度緩慢,但在高速渦輪機械中氣體箔軸承的使用一直在加速。導致<br>緩慢增長的因素之一是缺乏<br>以測量為基準的分析工具來預測<br>旋轉機械中的氣箔軸承行為。為了解決這個缺點,<br>NASA格倫研究中心(GRC)支持<br>開發分析工具來預測氣箔軸承的<br>性能。其中一種代碼具有預測<br>轉子動力係數,功率損耗,膜厚,結構<br>變形等的能力。當前的論文<br>對名為<br>XLGFBTH(德克薩斯農工大學)的代碼的預測能力進行了評估。GRC的測試台被用作<br>模擬案例研究,<br>使用代碼輸出將轉子動力分析<br>與測試台中測得的實際轉子響應進行比較。試驗台轉子支撐<br>在GRC生產的兩個氣箔軸頸軸承上,並<br>公開了所有相關幾何形狀。結果比較表明<br>使用XLGFBTH計算出的轉子動力學係數可以很好地表示<br>系統的動力學特性,尤其是<br>在預測臨界轉速方面。
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结果 (繁体中文) 2:[复制]
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Gas foil bearings offer several advantages over traditional<br>bearing types that make them attractive for use in high-speed<br>turbomachinery. They can operate at very high temperatures,<br>require no lubrication supply (oil pumps, seals, etc.), exhibit<br>very long life with no maintenance, and once operating<br>airborne, have very low power loss. The use of gas foil bearings<br>in high-speed turbomachinery has been accelerating in recent<br>years, although the pace has been slow. One of the contributing<br>factors to the slow growth has been a lack of analysis tools,<br>benchmarked to measurements, to predict gas foil bearing<br>behavior in rotating machinery. To address this shortcoming,<br>NASA Glenn Research Center (GRC) has supported the<br>development of analytical tools to predict gas foil bearing<br>performance. One of the codes has the capability to predict<br>rotordynamic coefficients, power loss, film thickness, structural<br>deformation, and more. The current paper presents an<br>assessment of the predictive capability of the code, named<br>XLGFBTH (Texas A&M University). A test rig at GRC is used<br>as a simulated case study to compare rotordynamic analysis<br>using output from the code to actual rotor response as measured<br>in the test rig. The test rig rotor is supported on two gas foil<br>journal bearings manufactured at GRC, with all pertinent<br>geometry disclosed. The resulting comparison shows that the<br>rotordynamic coefficients calculated using XLGFBTH represent<br>the dynamics of the system reasonably well, especially as they<br>pertain to predicting critical speeds.
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结果 (繁体中文) 3:[复制]
复制成功!
气膜轴承比传统轴承有几个优点<br>使其具有高速使用吸引力的轴承类型<br>涡轮机械。它们可以在很高的温度下工作,<br>不需要润滑油供应(油泵、密封件等),附件<br>使用寿命长,无需维护,一次运行<br>机载,具有很低的功率损耗。气膜轴承的使用<br>在高速涡轮机械中<br>多年来,尽管步伐缓慢。贡献者之一<br>导致增长缓慢的因素是缺乏分析工具,<br>以测量为基准,预测气体箔轴承<br>在旋转机械中的行为。为了解决这个缺点,<br>美国宇航局格伦研究中心(GRC)支持<br>气膜轴承预测分析工具的开发<br>表演。其中一个代码能够预测<br>转子动力系数、功率损耗、膜厚、结构<br>变形等等。当前的论文提出了<br>代码预测能力的评估,命名为<br>XLGFBTH(德州农工大学)。使用GRC的试验台<br>作为比较转子动力学分析的模拟案例<br>使用从代码输出到实际测量的转子响应<br>在试验台上。试验台转子由两个铝箔支撑<br>GRC制造的轴颈轴承<br>几何披露。结果比较表明<br>用XLGFBTH表示计算的转子动力系数<br>系统的动力学相当好,特别是<br>与预测临界速度有关。<br>
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