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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Universiti Malaysia Perlis (UniMAP)
2012
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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 |
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Rotating systems Bladed disk Internal damping |
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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 |
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1643792811532746752 |
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13.214268 |