The aim of this study is to find a way to reduce noise and vibration energy thought the "particle damping" method in brake applications. An experimental and theoretical study on brake pad prototypes has been developed is a collaboration between the Dept. of Mechanics of the University of Genova and ITT Motion Technology. The first step was to perform a series of impact measurements on pads adopting the particle damping technology in order to find which kind of configuration gives the best results in terms of damping. The compared prototypes were filled with different materials like brass, zinc and bronze dust or small steel spheres (different numbers of sphere into the cavity). In parallel to the experimental activity, was created a simulation brake pad model using the LMS Virtual.Lab Motion multibody software to deepen further aspects related to particle damping; using the model it was possible to evaluate he kinematic parameters and the forces among the various elements in the system and so to obtain an information about particle damping energy dissipation capability. The research results show that the presented particle damping technique is effective and a reasonable correlation was obtained between simulation and test. The application is covered by international patent "WIPO WO/2010/146047".
Theoretical and experimental investigation on techniques for controlling brake pads damping through the particle damping technology
LUCIFREDI, ALERAMO;SILVESTRI, PAOLO;
2012-01-01
Abstract
The aim of this study is to find a way to reduce noise and vibration energy thought the "particle damping" method in brake applications. An experimental and theoretical study on brake pad prototypes has been developed is a collaboration between the Dept. of Mechanics of the University of Genova and ITT Motion Technology. The first step was to perform a series of impact measurements on pads adopting the particle damping technology in order to find which kind of configuration gives the best results in terms of damping. The compared prototypes were filled with different materials like brass, zinc and bronze dust or small steel spheres (different numbers of sphere into the cavity). In parallel to the experimental activity, was created a simulation brake pad model using the LMS Virtual.Lab Motion multibody software to deepen further aspects related to particle damping; using the model it was possible to evaluate he kinematic parameters and the forces among the various elements in the system and so to obtain an information about particle damping energy dissipation capability. The research results show that the presented particle damping technique is effective and a reasonable correlation was obtained between simulation and test. The application is covered by international patent "WIPO WO/2010/146047".
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