TY - JOUR
T1 - An algebraic approach for identification of rotordynamic parameters in bearings with linearized force coefficients
AU - Mendoza-Larios, José Gabriel
AU - Barredo, Eduardo
AU - Arias-Montiel, Manuel
AU - Baltazar-Tadeo, Luis Alberto
AU - Landa-Damas, Saulo Jesús
AU - Tapia-Herrera, Ricardo
AU - Colín-Ocampo, Jorge
N1 - Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - In this work, a novel methodology for the identification of stiffness and damping ro-tordynamic 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.
AB - In this work, a novel methodology for the identification of stiffness and damping ro-tordynamic 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.
KW - Algebraic identification
KW - Finite element model
KW - Rotor-bearing system
KW - Rotordynamic coefficients
UR - http://www.scopus.com/inward/record.url?scp=85118548035&partnerID=8YFLogxK
U2 - 10.3390/math9212747
DO - 10.3390/math9212747
M3 - Artículo
AN - SCOPUS:85118548035
SN - 2227-7390
VL - 9
JO - Mathematics
JF - Mathematics
IS - 21
M1 - 2747
ER -