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Your search keyword '"Meier, Nicolas"' showing total 4 results
Start Over Author "Meier, Nicolas" Topic recurrence analysis
4 results on '"Meier, Nicolas"'

2. The influence of the radial internal clearance on the dynamic response of self-aligning ball bearings

Author

Ambrożkiewicz, Bartłomiej, Syta, Arkadiusz, Gassner, Alexander, Georgiadis, Anthimos, Litak, Grzegorz, and Meier, Nicolas

Subjects
Mechanical Engineering, Recurrence analysis, Aerospace Engineering, Mechanical vibrations, Quantitative Biology::Cell Behavior, Radial internal clearance, Computer Science Applications, Physics::Fluid Dynamics, Quantitative Biology::Subcellular Processes, Computer Science::Robotics, Sensitivity, Engineering, Self-aligning ball bearing, Control and Systems Engineering, Signal Processing, Civil and Structural Engineering
Abstract

In this work, we present a quantitative and qualitative analysis of the dynamic response of ball bearings dependent on radial internal clearance. We measured the vibrations of a rotating system based on self-aligning ball bearings for different clearances and rotating speeds. The analysis of vibration spectra was conducted considering a set of different recurrence indicators in order to describe the response of the bearing to the optimal clearance. It comes out that indicators have different sensitivity to the changes of the internal clearance. Few quantificators, i.e. entropy, trapping time, and recurrence period density entropy demonstrate the highest sensitivity to the change of radial clearance. The proposed quantificators are useful for real-time monitoring of operating clearance.

Published
2022
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3. Experimental Verification of the Impact of Radial Internal Clearance on a Bearing's Dynamics.

Author

Ambrożkiewicz, Bartłomiej, Syta, Arkadiusz, Georgiadis, Anthimos, Gassner, Alexander, and Meier, Nicolas

Subjects
ROLLER bearings, HERTZIAN contacts, BALL bearings, DEGREES of freedom, MATHEMATICAL models
Abstract

This paper focuses on the influence of radial internal clearance on the dynamics of a rolling-element bearing. In the beginning, the 2—Degree of Freedom (DOF) model was studied, in which the clearance was treated as a bifurcation parameter. The derived nonlinear mathematical model is based on Hertzian contact theory and takes into consideration shape errors of rolling surfaces and eccentricity reflecting real operating conditions. The analysis showed characteristic dynamical behavior by specific clearance range, which reflects others in a low or high amplitude and can refer to the optimal clearance. The experimental validation was conducted with the use of a double row self-aligning ball bearing (SABB) NTN 2309SK in which the acceleration response was measured by various rotational velocities. The time series obtained from the mathematical model and the experiment were analyzed with the recurrence quantification analysis. [ABSTRACT FROM AUTHOR]

Published
2022
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4. Analysis of Dynamic Response of a Two Degrees of Freedom (2-DOF) Ball Bearing Nonlinear Model.

Author

Ambrożkiewicz, Bartłomiej, Litak, Grzegorz, Georgiadis, Anthimos, Meier, Nicolas, and Gassner, Alexander

Subjects
BALL bearings, DEGREES of freedom, ROLLER bearings, HERTZIAN contacts, FAST Fourier transforms, MATHEMATICAL models
Abstract

Often the input values used in mathematical models for rolling bearings are in a wide range, i.e., very small values of deformation and damping are confronted with big values of stiffness in the governing equations, which leads to miscalculations. This paper presents a two degrees of freedom (2-DOF) dimensionless mathematical model for ball bearings describing a procedure, which helps to scale the problem and reveal the relationships between dimensionless terms and their influence on the system's response. The derived mathematical model considers nonlinear features as stiffness, damping, and radial internal clearance referring to the Hertzian contact theory. Further, important features are also taken into account including an external load, the eccentricity of the shaft-bearing system, and shape errors on the raceway investigating variable dynamics of the ball bearing. Analysis of obtained responses with Fast Fourier Transform, phase plots, orbit plots, and recurrences provide a rich source of information about the dynamics of the system and it helped to find the transition between the periodic and chaotic response and how it affects the topology of RPs and recurrence quantificators. [ABSTRACT FROM AUTHOR]

Published
2021
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