Damping Effect of Particle Damper in the Free Vibration of a Cantilever Beam

• 1、Department of Civil Engineering, Dongguan University of Technology, GuangDong Dongguan 523808
• 2、Department of Mechanics, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, 730000, China

Abstract：The first vibration mode of the structure composed of cantilever beam and particle damper is simulated by the system of spring and mass. In simulation, both the inherent damp of cantilever beam and the damp generated by particle damper are considered as the linear homogeneous functions of vibration velocity. Based on a set of test data, we use the proposed simulation to study the dependence of the damping ratio adapted from particle damper on the filling ratio of particle damper, and find that the damping ratio increases at first then decreases in the growth process of the filling ratio. So we define the optimal filling ratio corresponding to the maximum value of the damping ratio, which can provide the key designing parameter for the commercial production of particle dampers.

Keywords： particle damper cantilever beam damping effect damping ratio filling ratio