2 点吊り振子の捩り振動の基礎解析(2)

概要

論文の詳細を見る
A uniform density bar is suspended at its two ends by two strings whose two end points are attached to an upperstatic wall. The bar may make torsional oscillation in a vertical plane from its equilibrium rest state, which is called bifilarsuspension pendulum. There are three configurations of this pendulum: the distance between the two points is longer or shorterthan the bar length, and it is just the same. For the configurations, there are three oscillation modes: two swinging modes andone torsional mode. The bar keeps the attitude horizontal during the torsional oscillation of the pendulum about the verticalaxis. The torsional mode is analyzed here, in which the conservation of mechanical energy gives exact mechanisms of freeoscillations. The nonlinear oscillation is also solved with the aid of numerical computations. The results obtained are expectedto provide new education materials and to apply in Earthquake Engineering and Seismic Design.
2011-01-31