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Volume 19
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10.3390/ma19030490
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Article

Viscosity Characterization of PDMS and Its Influence on the Performance of a Torsional Vibration Viscous Damper Under Forced Hydrodynamic Loading

by
Andrzej Chmielowiec
1,
Adam Michajłyszyn
1,
Justyna Gumieniak
1,
Sławomir Woś
2,
Wojciech Homik
2 and
Katarzyna Antosz
2,*
1
The Faculty of Mechanics and Technology, Rzeszow University of Technology, Kwiatkowskiego 4, 37-450 Stalowa Wola, Poland
2
The Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Powstańców Warszawy 12, 35-029 Rzeszów, Poland
*
Author to whom correspondence should be addressed.
Materials 2026, 19(3), 490; https://doi.org/10.3390/ma19030490
Submission received: 23 December 2025 / Revised: 18 January 2026 / Accepted: 21 January 2026 / Published: 26 January 2026
(This article belongs to the Special Issue Manufacturing, Characterization and Modeling of Advanced Materials (Second Edition))
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Abstract

This study presents the experimental and model-based characterization of polydimethylsiloxane (PDMS) as a damping medium in a torsional vibration viscous damper. Particular emphasis is placed on the influence of the PDMS viscosity on the dynamic response of the damper under variable hydrodynamic loading generated by torsional vibrations of the system and the mass of the inertia ring. Investigations were conducted over a wide range of kinematic viscosities, enabling the identification of damper operating regimes and the assessment of lubricating film stability. The developed mathematical model, based on hydrodynamic lubrication theory, describes the relationships between the PDMS viscosity, the relative angular velocity, and the eccentricity of the inertia ring. Experimental results confirm the model’s ability to predict transitions between stable, unstable, and boundary operating modes of the damper. The proposed approach enables the functional, system-level characterization of PDMS under hydrodynamic loading conditions within a torsional vibration damper. In this framework, the rheological properties of PDMS are directly linked to the dynamic response and operational stability of the mechanical system.
Keywords: polydimethylsiloxane (PDMS); dynamic viscosity; hydrodynamic loading; torsional vibration viscous damper; hydrodynamic lubrication theory polydimethylsiloxane (PDMS); dynamic viscosity; hydrodynamic loading; torsional vibration viscous damper; hydrodynamic lubrication theory

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MDPI and ACS Style

Chmielowiec, A.; Michajłyszyn, A.; Gumieniak, J.; Woś, S.; Homik, W.; Antosz, K. Viscosity Characterization of PDMS and Its Influence on the Performance of a Torsional Vibration Viscous Damper Under Forced Hydrodynamic Loading. Materials 2026, 19, 490. https://doi.org/10.3390/ma19030490

AMA Style

Chmielowiec A, Michajłyszyn A, Gumieniak J, Woś S, Homik W, Antosz K. Viscosity Characterization of PDMS and Its Influence on the Performance of a Torsional Vibration Viscous Damper Under Forced Hydrodynamic Loading. Materials. 2026; 19(3):490. https://doi.org/10.3390/ma19030490

Chicago/Turabian Style

Chmielowiec, Andrzej, Adam Michajłyszyn, Justyna Gumieniak, Sławomir Woś, Wojciech Homik, and Katarzyna Antosz. 2026. "Viscosity Characterization of PDMS and Its Influence on the Performance of a Torsional Vibration Viscous Damper Under Forced Hydrodynamic Loading" Materials 19, no. 3: 490. https://doi.org/10.3390/ma19030490

APA Style

Chmielowiec, A., Michajłyszyn, A., Gumieniak, J., Woś, S., Homik, W., & Antosz, K. (2026). Viscosity Characterization of PDMS and Its Influence on the Performance of a Torsional Vibration Viscous Damper Under Forced Hydrodynamic Loading. Materials, 19(3), 490. https://doi.org/10.3390/ma19030490

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