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Supporting Data and Code for "The Influence of Rotor-Stator Contact on the Nonlinear Vibration of an Asymmetrical Rotor"

Version 1.0

Fasihi, Ali, 2025, "Supporting Data and Code for "The Influence of Rotor-Stator Contact on the Nonlinear Vibration of an Asymmetrical Rotor"", https://doi.org/10.18150/D9ENWT, RepOD, V1

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Description

This dataset includes all supporting files for the manuscript "The Influence of Rotor-Stator Contact on the Nonlinear Vibration of an Asymmetrical Rotor". The study investigates the complex nonlinear dynamics of a rotating, asymmetric shaft under rotor-stator contact using a combination of analytical modeling and numerical simulation.

The repository is organized to reflect the structure of the manuscript, with folders corresponding to its main subsections:

📁 1. Analytic verification

Related to Subsection 4.1 — Verification

Includes symmetric and asymmetric case studies using both analytical (Maple) and numerical (MATLAB) methods. Also contains:

  • Figures comparing analytical and numerical solutions
  • Scripts for bifurcation diagrams and parameter studies
  • Error analysis routines

📁 2. Rotational speed

Related to Subsection 4.2 — The effect of the rotating speed

Contains MATLAB code and result files for bifurcation and Lyapunov exponent analysis over varying rotational speeds.

📁 3. Asymmetricity effect

Related to Subsection 4.3 — The effect of asymmetricity

Includes two parts:

  • Non-impact figure analysis: Influence of asymmetric inertia and stiffness in the absence of contact.
  • Bifurcation and Lyapunov analysis: Behavior under contact with increasing asymmetry.

📁 4. Contact stiffness

Related to Subsection 4.4 — The effect of impact stiffness

Provides scripts and plots for studying dynamic transitions under varying contact stiffness levels, including chaotic regimes and bifurcation diagrams.

📁 5. Damping coefficient

Related to Subsection 4.5 — The effect of damping coefficient

Demonstrates how damping influences transitions between periodic, quasi-periodic, and chaotic motions, with bifurcation and Lyapunov plots.

📁 6. Slenderness ratio

Additional Parametric Study (Appendix C)

Analyzes the effect of slenderness ratio on rotor dynamics in the absence of contact. Includes comparisons for different geometries (e.g., cross-section ratios).

📁 7. Position of Disk

Additional Parametric Study (Appendix C)

Explores how the location of the added disk along the shaft affects dynamic response characteristics.

Usage Notes:

  • Scripts are primarily written in MATLAB (R2020a or newer recommended).
  • Analytical models are implemented in Maple (.mw files).
  • .fig files can be viewed in MATLAB's Figure Viewer for further inspection or editing.

Citation:

If you use this dataset or code, please cite the corresponding paper:

Fasihi, A., Shahgholi, M., Kudra, G., Ghandchi Tehrani, M., & Awrejcewicz, J.

The Influence of Rotor-Stator Contact on the Nonlinear Vibration of an Asymmetrical Rotor, Nonlinear Dynamics, 2025.

Contact:

Ali Fasihi — aliefasihi@gmail.com

Subject
Engineering
Keyword

Rotor-stator contact, Asymmetric rotor, Bifurcation, Period-n motion

CC0 Creative Commons Zero 1.0 CC0 Creative Commons Zero 1.0

1 File
Rotor_stator_contact_in_asymmetric_rotor.zip
ZIP Archive - 74.2 MB - Jun 23, 2025 - 2 Downloads
MD5: a863ef3d7607b6e3332aa636f82d2786
License: CC0 Creative Commons Zero 1.0
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