SYSTEM EXCITED BY VORTEX SHEDDING WITH A DYNAMIC ABSORBER

摘要

The paper analyzes the behavior of a basic one-mass self-excited system with a dynamic absorber. The amplitudes of absorber's mass are constrained by two soft stops situated symmetrically to the equilibrium position. The self-excitation of the basic system is due to the vortex shedding The soft stops are characterized by additional stop stiffness and by the damping that is supposed to depend on the stop deformation and on the signum of relative velocity of absorber's mass to the results of numerical simulation of the differential equations of motion The effects of varying system's parameters are investigated and the efficiency of the dynamic absorber is evaluated.