542 歯車ロータ系の曲げねじり連成振動のモード合成による計算

概要

論文の詳細を見る
A calculation model applying mode synthesis method for lateral-torsional coupled vibration of two-shaft geared rotor system is proposed in this study. Comparing to uncoupled lateral and torsional analysis, coupled lateral-torsional analysis is much more time/memory-consuming as the number of elements of calculation matrices increases with DOF squared. Mode synthesis method is essential and enables to greatly reduce degrees of freedom without increasing calculation errors. The model contains bearing stiffness and non-proportional damping for lateral directions as inner elements comprising inner systems, whereas stiffness of gear tooth contact for its normal direction is handled as a boundary element as provision for further extension to more complicated tooth contact model. The results of reduced calculations of coupled lateral-torsional vibration show that reduced models properly inherit intentionally chosen vibration modes from original DOF models.
一般社団法人日本機械学会の論文
2011-09-05