Abstract

This survey provides an insight into the modeling and testing of uniaxial friction dampers. The focus is on attenuating the linear relative movement along planar surfaces for frequencies between 10 Hz and 1 kHz. An overview of the different approaches seen in the literature concerning friction damping is provided. Examples and evaluation of such dampers excited over a wide range of frequencies are presented. The information required to develop models of friction dampers is covered. To that end, different modeling approaches are presented for dry friction. Dynamic friction models with an internal state are covered, and their advantages are described. Other modeling approaches are reported for complete systems with friction dampers. Both numerical and analytical models are covered. Experimental configurations from a selection of authors are also included. Finally, a series of suggestions for the numerical modeling and experimental testing of a friction damper are given.

Highlights

  • Friction dampers are devices that use dry friction to dissipate energy of a system in order to limit its vibratory response

  • A series of simulations and experimental approaches are presented in this document. They evaluate the response of systems to either friction alone or friction damping

  • The following proposed methodology is given as a starting point for numerical simulation and experimental testing of sliding friction dampers for continuously vibrating systems

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Summary

Introduction

Friction dampers are devices that use dry friction to dissipate energy of a system in order to limit its vibratory response. Combination with other damping technologies such as eddy currents, viscous dampers, and tuned mass dampers is common In such cases, the damper is often said to be semi-active. Macroslip dampers dissipate energy only by Coulomb friction They exhibit a fully sliding displacement between two surfaces. Microslip dampers dissipate energy by the sole presliding displacement of the contacting surfaces This survey concentrates on passive devices which can be installed on a given system; have a low weight; use minimal space; and are efficient at damping frequencies ranging from 10 Hz to 1 kHz. Most attention is given to uniaxial dampers undergoing continuous linear relative movement along planar surfaces.

Considerations for modeling and testing
Modeling approaches
Analytical methods
Numerical methods
Friction
Damping
Characterizing friction models
Discussion and conclusion
The friction model
Characterization and parameters
Experiments
Dynamic modeling
Further reading
Full Text
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