Digital Library of the European Council for Modelling and Simulation

Title:	Torsional Model And Analytical Simulation For Complex Rotating Machines
Authors:	Amin Almasi
Published in:	(2009).ECMS 2009 Proceedings edited by J. Otamendi, A. Bargiela, J. L. Montes, L. M. Doncel Pedrera. European Council for Modeling and Simulation. doi:10.7148/2009 ISBN: 978-0-9553018-8-9 23^rd European Conference on Modelling and Simulation, Madrid, June 9-12, 2009
Citation format:	Almasi, A. (2009). Torsional Model And Analytical Simulation For Complex Rotating Machines. ECMS 2009 Proceedings edited by J. Otamendi, A. Bargiela, J. L. Montes, L. M. Doncel Pedrera (pp. 303-309). European Council for Modeling and Simulation. doi:10.7148/2009-0303-0309
DOI:	http://dx.doi.org/10.7148/2009-0303-0309
Abstract:	Complex rotating machine trains especially trains including electric machines are subject to the most varied and often most severe torsional disturbances. If shaft or rotating component failures occur as a result of torsional oscillations, the consequences can be catastrophic. In this paper a comprehensive model and simulation method using analytical formulations are developed to study both steady state and transient response of complex rotating machine trains including several machines. Analytical results are presented and recommendations for torsional reliable trains are addressed. Couplings being the more accessible components within the train are often modified to tune the overall system. Recommendations for coupling are: High torsional stiffness coupling (best and optimum option, if torsional simulation confirmed frequency separation and transient torques) or flexible coupling (more elasticity and damping and more maintenance) or integral rigid forged flange connection (more rigidity, high natural frequencies and much less damping).
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