Investigation of analytical beam and annular plate models for automotive disc brake vibration
2010-07-20T11:18:27Z (GMT) by
In this paper two analytical models of automotive disc brake vibration will be presented and compared to experimental measurements. The first model approximates the brake disc as a simple beam structure with cyclo-symmetric boundary conditions. Since the beam model is a one-dimensional approach and, therefore, the modelling of the inner boundary conditions of the brake disc is impossible, a second model based upon Kirchhoff’s plate theory is also presented. The mode shapes and natural frequencies of a static disc with different inner boundary conditions are calculated and compared to experimental vibration and sound pressure measurements of a brake disc made upon a static test rig. Additionally, a set of initial measurements made upon a spinning disc rig are also discussed.