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The effect of row of blades on self-excited instability of rotating systems

International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) organized by School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 27th - 28th Februari 2012 at Bayview Beach Resort, Penang, Malaysia.

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Bibliographic Details
Main Authors: Mohammad-Reza, Ghazavi, Asghar, Najafi
Other Authors: ghazavim@modares.ac.ir
Format: Working Paper
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2012
Subjects:
Rotating systems
Bladed disk
Internal damping
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/19487
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spelling my.unimap-194872012-05-31T13:32:51Z The effect of row of blades on self-excited instability of rotating systems Mohammad-Reza, Ghazavi Asghar, Najafi ghazavim@modares.ac.ir asghar.najafi@modares.ac.ir Rotating systems Bladed disk Internal damping International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) organized by School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 27th - 28th Februari 2012 at Bayview Beach Resort, Penang, Malaysia. The self-excited instability, which is common in rotating systems, is investigated in a bladed disk system. The instability happens due to internal damping and causes asynchronous vibrations. A bladed disk model of the rotor is suggested to study of such instability and related bifurcation around the critical speed. The blades are modeled by inverted pendulum and Duffing’s type nonlinearity is considered for the stiffness of the supports. The equation of motions is derived using Lagrangian formulation and normal form of the equations is obtained by center manifold reduction method. Analytical formulations are derived and validated by numerical simulation. The analysis shows that the blades motions can deteriorate the asynchronous vibrations and even widen the instability region. 2012-05-31T08:31:48Z 2012-05-31T08:31:48Z 2012-02-27 Working Paper http://hdl.handle.net/123456789/19487 en Proceedings of the International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) Universiti Malaysia Perlis (UniMAP) Pusat Pengajian Kejuruteraan Mekatronik
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Rotating systems
Bladed disk
Internal damping
spellingShingle Rotating systems
Bladed disk
Internal damping
Mohammad-Reza, Ghazavi
Asghar, Najafi
The effect of row of blades on self-excited instability of rotating systems
description International Conference on Applications and Design in Mechanical Engineering 2012 (ICADME 2012) organized by School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), 27th - 28th Februari 2012 at Bayview Beach Resort, Penang, Malaysia.
author2 ghazavim@modares.ac.ir
author_facet ghazavim@modares.ac.ir
Mohammad-Reza, Ghazavi
Asghar, Najafi
format Working Paper
author Mohammad-Reza, Ghazavi
Asghar, Najafi
author_sort Mohammad-Reza, Ghazavi
title The effect of row of blades on self-excited instability of rotating systems
title_short The effect of row of blades on self-excited instability of rotating systems
title_full The effect of row of blades on self-excited instability of rotating systems
title_fullStr The effect of row of blades on self-excited instability of rotating systems
title_full_unstemmed The effect of row of blades on self-excited instability of rotating systems
title_sort effect of row of blades on self-excited instability of rotating systems
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2012
url http://dspace.unimap.edu.my/xmlui/handle/123456789/19487
_version_ 1643792811532746752
score 13.211869

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