Calculation of the performance of a coulomb friction damper of a crown bevel gear wheel for different forms of resonant oscillations

Abstract


Different designs of a Coulomb friction damper used to decrease the amplitude of bevel gear resonance oscillations and existing approaches to the modeling of variable-structure dry-friction systems are discussed in the paper. A parametric 3-d finite-element model of contact “bevel gear - plate damper” interaction has been developed. Natural frequencies of the system have been determined for different contact parameters. A set of amplitude-frequency curves of the “damper-wheel” system under consideration has been constructed for different values of damper pre-pressure. The work of the constraining force for the oscillation period has been calculated. By estimating the period-average number of sliding elements basic operating in the relative slip mode the principal modes of a Coulomb friction damper operation – with continuous and instant relative stops – are studied. The influence of the damper pre-pressure value on the relative amplitude of different forms of resonance oscillations is analyzed. A conclusion has been made on the basis of the calculation results that applying a Coulomb friction damper is an efficient way of reducing the amplitude of resonance oscillations of the bevel gear.


About the authors

E. V. Kozharinov

Central Institute of Aviation Motors named after P.I. Baranov, Moscow

Author for correspondence.
Email: egor@ciam.ru

Russian Federation

Engineer

J. M. Temis

Central Institute of Aviation Motors named after P.I. Baranov, Moscow

Email: tejoum@ciam.ru

Russian Federation

Doctor of Science (Engineering), Professor

Head of Mathematical Modelling Department 

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