A physics-based friction model and integration to a simple dynamical system

M. Eriten, A. A. Polycarpou, Lawrence Bergman

Research output: Contribution to journalArticlepeer-review

Abstract

Dynamical modeling and simulation of mechanical structures containing jointed interfaces require reduced-order fretting models for efficiency. The reduced-order models in the literature compromise both accuracy and the physical basis of the modeling procedure, especially with regard to interface contact and friction modeling. Recently, physics-based fretting models for nominally flat-on-flat contacts, including roughness effects, have been developed and validated on individual (isolated) mechanical lap joints (Eriten, 2011, Physics-Based Modeling for Fretting Behavior of Nominally Flat Rough Surfaces, Int. J. Solids Struct., 48(10), pp. 14361450). These models follow a bottom up modeling approach; utilizing the micromechanics of sphere-on-flat fretting contact (asperity scale), and statistical summation to model flat-on-flat contacts at the macroscale. Since these models are physical, the effects of surface roughness, contact conditions, and material properties on fretting and dynamical response of the jointed interfaces can be studied. The present work illustrates an example of how the physics-based models can be incorporated into studies of the dynamics of jointed structures. A comparison with friction models existing in the literature is also provided.

Original languageEnglish (US)
Article number051012
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume134
Issue number5
DOIs
StatePublished - Oct 16 2012

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

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