کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
290079 509712 2008 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long duration blade loss simulations including thermal growths for dual-rotor gas turbine engine
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Long duration blade loss simulations including thermal growths for dual-rotor gas turbine engine
چکیده انگلیسی

This paper presents an approach for blade loss simulation including thermal growth effects for a dual-rotor gas turbine engine supported on bearing and squeeze film damper. A nonlinear ball bearing model using the Hertzian formula predicts ball contact load and stress, while a simple thermal model estimates the thermal growths of bearing components during the blade loss event. The modal truncation augmentation method combined with a proposed staggered integration scheme is verified through simulation results as an efficient tool for analyzing a flexible dual-rotor gas turbine engine dynamics with the localized nonlinearities of the bearing and damper, with the thermal growths and with a flexible casing model. The new integration scheme with enhanced modeling capability reduces the computation time by a factor of 12, while providing a variety of solutions with acceptable accuracy for durations extending over several thermal time constants.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Sound and Vibration - Volume 316, Issues 1–5, 23 September 2008, Pages 147–163
نویسندگان
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