کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7154611 1462583 2018 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of gravity-induced asymmetry on the nonlinear vibration of an overhung rotor
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Effect of gravity-induced asymmetry on the nonlinear vibration of an overhung rotor
چکیده انگلیسی
In this study a mechanical model of an overhung rotor is explored to determine the effect of gravity on the nonlinear dynamics of an aero-engine. The model is an overhung disc with rotor-stator contact. The model has two degrees of freedom with lumped parameters; friction is neglected in the contact and the equations of motion are non-dimensionalised. A parametric study of the non-dimensional gravity parameter is conducted. The bifurcation plots show that gravity plays a crucial role in the nonlinear dynamics of such systems. With zero gravity, as explored in earlier studies, the model has synchronous whirling solutions, and asynchronous partially contacting solutions that are periodic only when viewed in a rotating coordinate system. If the gravity parameter is non-zero, then the dynamics observed are much richer and show additional multi-periodic and chaotic solutions in the stationary frame and continuous contact (full annular rub).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 62, September 2018, Pages 78-89
نویسندگان
, , ,