1120 エネルギー相互伝達によるタービン翼の振動応答

概要

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In recent year, Gas Turbine and Steam Turbine are large and high efficiency. Credibility improvement of turbine blades which is a core of a machinery is an extremely important problem. So it is important to know vibration characteristic of turbine blades. The turbine has some group of blades that connected by shroud. Therefore vibration characteristic of this turbine is more complicated than it of single blade. So it is very difficult to avoid agreement between rotational frequency of turbine and natural frequency of turbine blades. Moving blades and stationary blades are arranged with turbine in turn. The exciting force which influences moving blade is changed by the number of blades ratio(stationary blades/moving blades). We consider moving blades in resonance. We examine vibration behavior of turbine blades when the number of blades ratio and the combination number of moving blades are changed.
社団法人日本機械学会の論文