An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients

In this work, a novel methodology for the identification of stiffness and damping rotordynamic coefficients in a rotor-bearing system is proposed. The mathematical model for the identification process is based on the algebraic identification technique applied to a finite element (FE) model of a roto...

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Autores principales:	José Gabriel Mendoza-Larios, Eduardo Barredo, Manuel Arias-Montiel, Luis Alberto Baltazar-Tadeo, Saulo Jesús Landa-Damas, Ricardo Tapia-Herrera, Jorge Colín-Ocampo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	algebraic identification rotor-bearing system finite element model rotordynamic coefficients Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/c3436bae5ab0459c941f5acdeabfa242
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spelling	oai:doaj.org-article:c3436bae5ab0459c941f5acdeabfa2422021-11-11T18:17:43ZAn Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients10.3390/math92127472227-7390https://doaj.org/article/c3436bae5ab0459c941f5acdeabfa2422021-10-01T00:00:00Zhttps://www.mdpi.com/2227-7390/9/21/2747https://doaj.org/toc/2227-7390In this work, a novel methodology for the identification of stiffness and damping rotordynamic coefficients in a rotor-bearing system is proposed. The mathematical model for the identification process is based on the algebraic identification technique applied to a finite element (FE) model of a rotor-bearing system with multiple degree-of-freedom (DOF). This model considers the effects of rotational inertia, gyroscopic moments, shear deformations, external damping and linear forces attributable to stiffness and damping parameters of the supports. The proposed identifier only requires the system’s vibration response as input data. The performance of the proposed identifier is evaluated and analyzed for both schemes, constant and variable rotational speed of the rotor-bearing system, and numerical results are obtained. In the presented results, it can be observed that the proposed identifier accurately determines the stiffness and damping parameters of the bearings in less than 0.06 s. Moreover, the identification procedure rapidly converges to the estimated values in both tested conditions, constant and variable rotational speed.José Gabriel Mendoza-LariosEduardo BarredoManuel Arias-MontielLuis Alberto Baltazar-TadeoSaulo Jesús Landa-DamasRicardo Tapia-HerreraJorge Colín-OcampoMDPI AGarticlealgebraic identificationrotor-bearing systemfinite element modelrotordynamic coefficientsMathematicsQA1-939ENMathematics, Vol 9, Iss 2747, p 2747 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	algebraic identification rotor-bearing system finite element model rotordynamic coefficients Mathematics QA1-939
spellingShingle	algebraic identification rotor-bearing system finite element model rotordynamic coefficients Mathematics QA1-939 José Gabriel Mendoza-Larios Eduardo Barredo Manuel Arias-Montiel Luis Alberto Baltazar-Tadeo Saulo Jesús Landa-Damas Ricardo Tapia-Herrera Jorge Colín-Ocampo An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
description	In this work, a novel methodology for the identification of stiffness and damping rotordynamic coefficients in a rotor-bearing system is proposed. The mathematical model for the identification process is based on the algebraic identification technique applied to a finite element (FE) model of a rotor-bearing system with multiple degree-of-freedom (DOF). This model considers the effects of rotational inertia, gyroscopic moments, shear deformations, external damping and linear forces attributable to stiffness and damping parameters of the supports. The proposed identifier only requires the system’s vibration response as input data. The performance of the proposed identifier is evaluated and analyzed for both schemes, constant and variable rotational speed of the rotor-bearing system, and numerical results are obtained. In the presented results, it can be observed that the proposed identifier accurately determines the stiffness and damping parameters of the bearings in less than 0.06 s. Moreover, the identification procedure rapidly converges to the estimated values in both tested conditions, constant and variable rotational speed.
format	article
author	José Gabriel Mendoza-Larios Eduardo Barredo Manuel Arias-Montiel Luis Alberto Baltazar-Tadeo Saulo Jesús Landa-Damas Ricardo Tapia-Herrera Jorge Colín-Ocampo
author_facet	José Gabriel Mendoza-Larios Eduardo Barredo Manuel Arias-Montiel Luis Alberto Baltazar-Tadeo Saulo Jesús Landa-Damas Ricardo Tapia-Herrera Jorge Colín-Ocampo
author_sort	José Gabriel Mendoza-Larios
title	An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
title_short	An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
title_full	An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
title_fullStr	An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
title_full_unstemmed	An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients
title_sort	algebraic approach for identification of rotordynamic parameters in bearings with linearized force coefficients
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/c3436bae5ab0459c941f5acdeabfa242
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An Algebraic Approach for Identification of Rotordynamic Parameters in Bearings with Linearized Force Coefficients

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