擬規準座標変換法による回転軸と基礎架台の連成振動解析 : 第2報,不つりあい応答解析(機械力学,計測,自動制御)

概要

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To estimate the vibration of rotating shafts like turbine-generator sets, the rotor vibration analysis must include the vibration characteristics of the foundation. In this paper we propose a method of analyzing the vibration of a coupled rotor-foundation system. Called a quasi-modal technique, it is based on the same concept as the well known modal synthesis method. It provides a reduced model of an actual system using a combination of eigen modes of an inner system restricted at the bearings plus deflection modes created when inputting the load at the boundary points. A rotor system and a foundation system are each reduced separately by this technique, and the reduced models are then coupled at the bearing boundary points. According to this procedure, we developed computer code for performing vibration analysis of an entire system. In our previous paper, we proved the effectiveness of complex eigen value analysis code. In this paper we propose code for the response analysis of rotor inbalance. We show calculation examples for a coupled turbine-generator-foundation system.
社団法人日本機械学会の論文
2002-12-25