An efficient approach to estimate critical value of friction coefficient and sensitivity analysis for brake squeal
by Jinchun Huang, Charles M. Krousgrill, Anil K. Bajaj
International Journal of Vehicle Design (IJVD), Vol. 51, No. 1/2, 2009

Abstract: Automotive brake noise has been a major concern in automotive industry and structural modification is a practical and effective way to reduce it. Here, a new method to estimate the critical friction coefficient is summarised, and then a sensitivity analysis is developed. The key is a reduced-order characteristic equation for computing the elastically coupled system's eigenvalues and their derivatives. Based on this reduced-order equation, a sensitivity analysis of the steady-sliding stability with respect to lining stiffness and lining geometry is presented for a drum brake system. This analysis eliminates need for new system models or a full complex eigenvalue analysis.

Online publication date: Wed, 15-Jul-2009

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