Reducing Brake Squeal Using DOE Approach on Complex Analysis with HyperStudy
Marco Spinelli, FIAT
Brake squeal is one of the most common problems in automobile industry. It is generically defined as a self-excited vibration noise from 1kHz to up 16 kHz. This is a complex phenomenon associated with the stiffness, friction materials, mass , speed brake pressure etc.
In this paper, an application of DOE optimization using Hyperstudy to the design of an automotive suspension assembly is investigated and a methodology is presented. The complex eigenvalues analysis method was developed to work in a Design of Experiments (DOE) analysis setup.
The parameters of interest include shape of several components and the material properties of the rotor and pad. The DOE study was used to determine the best combination of design parameters that reduce the propensity for squeal.