کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
615778 881460 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved identification of squeeze-film damper models for aeroengine vibration analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Improved identification of squeeze-film damper models for aeroengine vibration analysis
چکیده انگلیسی

Numerical solution of the Reynolds equation imposes a prohibitive computational cost on the dynamic analysis of practical squeeze film damped turbomachinery. To surmount this problem, the present paper develops the use of Chebyshev polynomial fits to identify finite difference (FD) solution of the incompressible Reynolds equation. The proposed method manipulates the Reynolds equation to allow efficient and accurate identification in the presence of cavitation, the feed-groove, feed-ports, end-plate seals and supply pressure. The ability of Chebyshev polynomials to rapidly reproduce FD routines is demonstrated. The bearing models developed are experimentally proven to give more accurate results than alternative analytical bearing models.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 43, Issue 9, September 2010, Pages 1639–1649
نویسندگان
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