301 ゴム振り子を用いた建物模型の割振(動吸振器2)

概要

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It is important to reduce vibration for resonant vibration phenomena of vibration systems such as structure, building, and machine equipment. This paper presents a detailed analyses of a inverted rubber pendulum (IRP) for a simple vibration control method. The inverted rubber pendulum consists of a mass and a rubber element with visco-elasticity material. A modulus of longitudinal elasticity of the rubber element are assumed to be rubber which have complex modulus of longitudinal elasticity E^* = E_R(1 + j_ε). When the primary system have only spring, the fixed point theory can be used and the optimum tuning condition and loss factor are obtained. Vibration transmissibilities of a single-layered building model and a three-layered building model are measured experimentally without IRP and with IRP, respectively. The results show good agreement with calculated ones by means of a single-layered building model with IRP. It is concluded that the complex modulus of longitudinal elasticity models can be applied for calculatating vibration response of IRP type dynamic absorber.
一般社団法人日本機械学会の論文
2002-01-11