Supachai Lakkam and Saiprasit Koetniyom

pp. 179 - 187

Abstract

An optimization study for brake squeals aims to minimize the strain energy of vibrating pads with constrained layer
damping. To achieve this, using finite element method and experiments were operated and assumed-coupling mode method
was used to solve it. The integrated global strain energy of the pad over a frequency range of interesting mode was calculated.
Parametric studies were then performed to identify those dominant parameters on the vibration response of the damped pad.
Moreover, the proposed methodology was employed to search for the optimum of the position/geometry of the constrained
layer damping patch. Optimal solutions are given and discussed for different cases where the strain energy of the pad over a
frequency range is covering the first bending mode and with the inclusion of the restriction of minimum damping material
utilization. As a result, the integrated strain energy is then performed to identify and optimize the position and geometry of the
damping shim. The optimization of the constrained layer damping for strain energy minimization of vibrating pads depend on
the position of the shape of the damping patch. These data can guide to specify the position of the constrained layer damping
patch under pressure conditions.