Abstract
A passive-type dynamic absorber is usually effective for pre-determined narrow frequency range.Design of the damper following well-known optimal tuning theory could extend the effective range,whereas the damping performance remains at a certain amount and yet the vibration caused by transient disturbances could not be sufficiently reduced.A frequency-tunable dynamic absorber with variable stiffness property can be a measure for placing adaptability to the structure against non-stationary disturbances.In this paper,the stiffness controllable elastomer known as MRE is applied to the dynamic absorber whose natural frequency is tunable by magnetic field.Investigations show that the vibration of the structure can be reduced by the proposed absorber with variable stiffness functionality.
