Abstract:
The distribution of system damp could be described by the internal friction and structure damped coefficient. It was important for design of reducing vibration of the damping structure. The damping coefficient of cantilever thin plate was identified by the frequency response function matrix method in this paper. The principle and test process were introduced. The test system was built to identify the damping coefficient. The thin plate was analyzed by the system. The data of the plate root were all bigger than that of freedom end no matter the damping matrix was inherent friction or the structural damping coefficient. The inner friction coefficient of low frequency band was bigger, while the structural damping coefficient of high frequency band was bigger.