圧電ダンパーの基本的特性と建築構造物への適用に関する基礎的研究

概要

論文の詳細を見る
The characteristics of piezoelectric dampers built with piezoelectric materials are investigated for the basic study of smart structural system for building structures. Piezoelectric materials can be applied not only to the sensors and the actuators, but also to the dampers. The damping mechanism and the stiffness derived from the piezoelectric equation are presented in this paper. In order to verify a damping characteristics of these devices under low frequency vibration, free vibration tests and calculations are carried out with a steel cantilever (119x65x6mm, f_1=3.7Hz). The damping system attached to the bar consists of a resistor, an inductor and 8 pieces of piezoceramics(60x60x1.5mm) at the end of the bar. The conclusion remarks the followings, 1)The analytical calculations for the piezoelectric damper under low frequency vibration correspond with experimental results, 2)The damping behavior of piezoelectric materials can be obtained by considering the shunted circuit, and 3)The damping factor of a structure with a piezoelectric damper can be calculated taking into consideration all the structural energy dissipation ratio, including the contribution of the piezoelectric materials.
社団法人日本建築学会の論文
2003-02-28