液体を内蔵する中空回転体の自助振動に関する研究 : 第2報, 弾性回転体の複素固有値解析

抄録

A stability analysis for a uniform elastic rotor filled with incompressible, inviscid liquid is presented. The authors consider small dynamic perturbations in the asynchronous whirling of the coupled fluid-structure system. A complex eigenvalue problem is derived for the natural whirling modes in order to discuss the rotor stability criteria. As a result, the theoretical predictions show fairly good agreements with experimental results. The effects of the length-diameter ratio of the rotor on the stability criteria are also discussed on the basis of the natural modes of the liquid.