215 Pattern Formation Phenomena in Contact Rotating System : Prevention Method of System with Two Rubber Rolls and its Experimental Verification

Abstract

Pattern formation Phenomena due to time delay often occur in contact rotating system. In previous study, we have been established a stability analysis method based on the existence condition in stable and unstable boundary not only in a single-DOF system but also in a multi-DOF system which all time delays is same. And, last year's report showed the possibility theoretically to apply to the stability analysis method for a system including difference time delay. In this report, we verify the availability experimentally to apply to the stability analysis method for a system including difference time delay and compare experimental results with theoretical ones of a system including difference time delay. In addition, we confirm the validity of dynamic absorbers for a system including difference time delay. As an example, we take 4 Rolls 3-DOF system that two viscoelasticity rolls rotate while contacting directly.