WIT Press


Mode Lock-in And Friction Modelling

Price

Free (open access)

Paper DOI

10.2495/CON990041

Volume

24

Pages

13

Published

1999

Size

1,214 kb

Author(s)

R. Allgaier, L. Gaul, W. Keiper, K. Willner

Abstract

In this paper the phenomenon of "mode lock-in" is investigated, which occurs in structures where vibrations are excited by frictional forces. In general "mode lock-in" is defined as the process by which modes of sub-structures couple with each other. A resonant response of the assembly (mode lock-in) is the result of the latter. For studying this effect an experimental pin-disc set-up was built in collaboration with Akay [1] and a corresponding FEM model was generated. The rotational speed of the disc, beam length, and the two parameters "normal force" and "angle of attack between pin and disc" can be varied with the p

Keywords