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Earlier works, coped with the problem of brake noise, described the dynamical behaviour of brake system components or excitation mechanisms, as the stick-slip effect. This work describes a pathway to simulate the dynamical behaviour of lumped mass system, excited by different mechanisms. One part of the paper focuses on the mechanical parameters of a lumped mass system, taking into account the geometry of the brake and mechanical properties of the friction material. This gives rise to the correct description of the energy dissipation into the boundary layer and the systems response resulting (e. g. pad end flutter). As a first step a FEM model of the entire brake is developed. By means of this model the sensitivity of systems eigenmodes regarding different mechanisms of excitation can be calculated. The eigenfrequencies with the highest sensibility of excitation are used for the assessment of the mechanical parameters of a simplified lumped mass system.