Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7177762 | Journal of the Mechanics and Physics of Solids | 2016 | 36 Pages |
Abstract
The prediction and control of friction-induced vibration requires a sufficiently accurate constitutive law for dynamic friction at the sliding interface: for linearised stability analysis, this requirement takes the form of a frictional frequency response function. Systematic measurements of this frictional frequency response function are presented for small samples of nylon and polycarbonate sliding against a glass disc. Previous efforts to explain such measurements from a theoretical model have failed, but an enhanced rate-and-state model is presented which is shown to match the measurements remarkably well. The tested parameter space covers a range of normal forces (10-50Â N), of sliding speeds (1-10Â mm/s) and frequencies (100-2000Â Hz). The key new ingredient in the model is the inclusion of contact stiffness to take into account elastic deformations near the interface. A systematic methodology is presented to discriminate among possible variants of the model, and then to identify the model parameter values.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
A. Cabboi, T. Putelat, J. Woodhouse,