MAGNETIC PARTICLE-CONTAINING COMPOSITE VISCOELASTIC BODY, AND VARIABLE RIGIDITY TYPE DYNAMIC VIBRATION ABSORBER USING THE VISCOELASTIC BODY

摘要

PROBLEM TO BE SOLVED: To provide a magnetic particle-containing composite viscoelastic body excellent in changeability of viscoelasticity, and also to provide a variable rigidity type dynamic vibration absorber using the viscoelastic body.SOLUTION: A magnetic particle-containing composite viscoelastic body is formed by dispersing a magnetic particle having an average grain size of <50 μm in a viscoelastic material so as to become 20-70 vol% with respect to a composite elastic body, wherein after mixing the magnetic particle with the viscoelastic material, a magnetic flux having the intensity of a magnetic flux density of 50 mT or higher is applied to cure the mixture.