The study of nonlinear dynamic behavior of laminate composed of steel and rubber layers
also referred as “Shim”, used for vibro-acoustic insulation in brake system, is
investigated. The simulation of the vibro-acoustic nonlinear behavior of Shim depending on
frequency, taking into account the large deformations and various nonlinear
hyper-viscoelastic laws of rubber are considered. This paper presents a solution to
contribute in the identification of the best design of Shim in terms of damping vibration
of brake systems, using analytical and numerical method. The choice of the best structure
depends essentially on the nature of rubber, on the stacking sequence of materials, on
their thickness, on the number of layers and on volume fraction of rubber. An analytical
study, with the use of the transfer matrix method is presented. A model on the finite
element software ANSYS is constructed. The results lead to conclusions about the best
structure and design of Shim in term of vibro-acoustic insulation.