Experimental investigation of beam-tip mass and pendoulum system under random excitation

摘要

The experimental investigation of the response of nonlinear systems under random excitation is very vlauable both to verify the analytical results and to provide a physical insight into complex response characteristics. In this paper, the response of a flexible beam-tip mass-pendulum system to the wide-band random excitation is observed and analyzed experimentally. The pendulum is attached to the tip mass used as an autoparametric vibration absorber. The concept of the experiment is to determine the energy transfer between the beam and the pendulum due to the nonlinear interaction of the modes of the system.