球面スパイラル溝軸受によって支持された縦形軸系の動解析

抄録

The dynamic characteristics of a rotor system supported by an oil-lubricated spherical spiral groove bearing (SSGB) were analyzed. In the analysis, the characteristics of SSGB were calculated by means of the finite-element method (FEM), and the rotor system had six degrees of freedom. The dynamic stability of the rotor system was analyzed by means of a nonlinear orbit method using the Runge-Kutta-Gill method. The dynamic imbalance response was analyzed and the limiting imbalance was also calculated. Moreover, the effects of sudden elimination of the upper bearing upon stable rotation were also considered. The validity of this analysis was examined by several experiments.