این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
Journal of Applied Fluid Mechanics، جلد ۱۱، شماره ۴، صفحات ۱۱۱۵-۱۱۲۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Micro-Vibration Analysis and Optimization of Aerostatic Bearing with Pocketed Orifice-Type Restrictor
چکیده انگلیسی مقاله For an aerostatic circular thrust bearing with a single pocketed orifice-type restrictor, the flow field in the bearing clearance is analyzed numerically, and the formation mechanism of the bearing micro-vibration is investigated. Through flow field analysis, the flow structures in the bearing clearance are discussed and classified. The formed vortex flow in flow field is analyzed, and the influence of the vortex flow on bearing dynamic stability related to micro-vibration is discussed. For each flow structure, the vortex flow always exists and induces the bearing micro-vibration. The Reynolds number is used to represent the degree of bearing micro-vibration and the rationality is verified. Based on the flow analysis results, the maximum Reynolds number in the bearing clearance flow field is taken as the optimization objective to reduce the micro-vibration amplitude, the approximate model for design optimization is established by using the radial basis functions method and the optimization methodology is illustrated. Several cases of optimization are carried out with different given bearing loads. Through optimization, the maximum Reynolds number is reduced greatly, which means the enhancement of the bearing dynamic stability. The optimization results show that in order to suppress the micro-vibration, the air supply pressure should be kept as small as possible, the small air pocket diameter and orifice diameter are also needed.
کلیدواژه‌های انگلیسی مقاله Aerostatic bearing, Gas lubrication, CFD simulation, Dynamic stability, Micro, Vibration, Design optimization
نویسندگان مقاله Y. F. Li |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, 621900, China

Y. H. Yin |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, 621900, China

H. Yang |
Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, 621900, China

X. E. Liu |
Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang, 621900, China

H. L. Cui |
Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, 621900, China

H. L. Cui |
Institute of Mechanical Manufacturing Technology, China Academy of Engineering Physics, Mianyang, 621900, China

نشانی اینترنتی https://www.jafmonline.net/article_647_1e20046538f069285fe945b57e86e384.pdf
فایل مقاله فایلی برای مقاله ذخیره نشده است
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات