Effect of Friction on Transmisibility in Coulombian Damper

Authors

  • A. Tudor Politehnica University of Bucharest, Romania
  • M. Vlase Technical University of Civil Engineering of Bucharest, Romania
  • N. Cerbu Politehnica University of Bucharest, Romania
  • H.S. Wahad Politehnica University of Bucharest, Romania
  • K.A.S. Ahmed Politehnica University of Bucharest, Romania

Keywords:

Friction damper, Striebeck curve, Transmissibility by friction, Dynamic model

Abstract

The friction modifies the all properties of the Coulombian damper (dry and mixed friction). The theoretical dynamic model of the gasket movement in the tube of the washing machine damper is proposed. The friction is analyzed that a function of the sliding velocity (Striebeck curve continuum and derivable curve). The force transmissibility and the displacement transmissibility of the damper are modified by the static friction coefficient and the gradient of the kinetic friction with the sliding velocity. The Coulombian damper can be excitatory when the friction decreases with the sliding velocity.

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Published

2017-02-01

Issue

Vol. 9(58) No. 2 Special Issue (2016)

Section

Articles