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To study the behavior of the braking system in noise and vibration analysis, due to its complexity, numerical models based on finite element analysis are used. The dynamic structural characteristics of the braking system components are strongly coupled to the modal behavior. The modal analysis may provide predictions about the vibration modes of some system components. The modal frequencies and vibration modes are crucial in the design phase, because they provide information on the behavior of the components in dynamic conditions. The modal analysis can be successfully used to validate the design of complex and costly mechanical structures that with high risk for vehicle operation. The current paper concerns the modal behavior of the braking system. The aim of the paper is to perform finite elements analysis of modal behavior for a brake disk. Validation of modal analysis is performed by experimental investigation. Taking into account the similarity of frequencies obtained, the model is partially validated by experimental approach.

automotive brakes; vibrations; modal analysis; finite element; experimental analysis