Data-Driven Model for the Dynamic Characteristics of O-Rings for Gas
© 2019 EPFL
The measurement results of various Nitrile-Butadiene-Rubber (NBR) O-Ring sizes are presented and reduced order models are developed in order to predict the stiffness and damping coefficient as a function of O-Ring geometry, Shore hardness, squeeze and excitation frequency.
Assessment of the model suggests a maximum deviation of 30% in predicted stiffness compared to the measurement data. The proposed model enables the prediction of various O-Rings to a good accuracy in the frequency range of 1.5 to 3.75kHz, which corresponds to typical gas bearing supported rotor applications.
Data-Driven Model for the Dynamic Characteristics of O-Rings for Gas Bearing Supported Rotors, P. Bättig, J. Schiffmann, Journal of Applied Mechanics, 2019-08-01. DOI : 10.1115/1.4043473.