超磁わいアクチュエータを用いた配管用耐震装置の開発

概要

論文の詳細を見る
The mechanical snubber is an earthquakeproof device for a piping system under high temperature. It follows a slow displacement of the piping due to thermal expansion, but restrains the piping by a strong resistance force during an earthquake. This strong force can cause elastic failure of grooves on a brake disk, where steel balls are placed. In this report, a new semiactive snubber using giant magnetostrictive actuators and a ball screw is proposed in order to obtain an earthquakeproof device which has less resistance force in comparison with the mechanical snubber. Earthquake responses of a simple beam supported by the semiactive snubber are simulated using a continuous system simulation language, and the restraint effect and the effective controlling condition of the snubber are discussed. The semiactive snubber is built using Terfenol-D (Tb_<0.3> Dy_<0.7> Fe_<1.92-1.95>) rods, and its resistance force characteristic is investigated by means of a vibration table.
一般社団法人日本機械学会の論文
1992-02-25