Prediction and validation of the energy dissipation of a friction damper
2009 (English)In: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 328, no 4-5, 396-410 p.Article in journal (Refereed) Published
Friction dampers can be a cheap and efficient way to reduce the vibration levels of a wide range of mechanical systems. In the present work it is shown that the maximum energy dissipation and corresponding optimum friction force of friction dampers with stiff localized contacts and large relative displacements within the contact, can be determined with sufficient accuracy using a dry (Coulomb) friction model. Both the numerical calculations with more complex friction models and the experimental results in a laboratory test set-up show that these two quantities are relatively robust properties of a system with friction. The numerical calculations are performed with several friction models currently used in the literature. For the stick phase smooth approximations like viscous damping or the arctan function are considered but also the non-smooth switch friction model is used. For the slip phase several models of the Stribeck effect are used. The test set-up for the laboratory experiments consists of a mass sliding on parallel ball-bearings, where additional friction is created by a sledge attached to the mass, which is pre-stressed against a friction plate. The measured energy dissipation is in good agreement with the theoretical results for Coulomb friction.
Place, publisher, year, edition, pages
2009. Vol. 328, no 4-5, 396-410 p.
Additional friction, Coulomb frictions, Friction damper, Friction force, Friction models, Friction plate, Laboratory experiments, Laboratory test, Localized contacts, Mechanical systems, Non-smooth, Numerical calculation, Pre-stressed, Relative displacement, Smooth approximation, Stribeck effect, Test sets, Theoretical result, Vibration level, Viscous damping, Ball bearings, Damping, Electron energy loss spectroscopy, Energy dissipation, Energy dissipators, Roller bearings, Set theory, Tribology, Vibrations (mechanical), Friction
IdentifiersURN: urn:nbn:se:kth:diva-66755DOI: 10.1016/j.jsv.2009.08.022ISI: 000271676000003OAI: oai:DiVA.org:kth-66755DiVA: diva2:498962
QC 201202192012-02-122012-01-272012-02-19Bibliographically approved