タービン・発電機軸系の軸形状と動吸振器の同時最適設計に関する研究 : 力学的エネルギ最小化に基づく動吸振器の設計式を用いた方法の提案

概要

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Simplified dynamic damper design expression based on minimization of mechanical energy is proposed in order to reduce the computational complexity of the simultaneous optimum design of rotor shaft configuration and damper parameters. Assuming that the dynamic interaction among multiple dynamic dampers is neglected, each dynamic damper can be designed independently. Under the above assumption, the ratio of the natural frequency and the damping ratio of the dynamic damper for each torsional vibration mode are given by simple expressions of the function of mass ratio. The expressions are derived under the stationary condition of the mechanical energy of each torsional vibration mode. Vector objective function for the simultaneous optimum design is constructed from several measures of the optimality of rotor shaft design and dynamic damper design. Mini-max method are used for converting the vector objective function into the scalar objective function. The effect of the proposed design expression will be shown by the numerical simulation results. Not only rotor shaft configuration but also parameters of multiple dynamic dampers are successfully optimized.
一般社団法人日本機械学会の論文
1999-05-25