Reagarding the inertia force of rotor as the force acting on the shaft, the effect of thermal expansion upon the natural transversal vibration frequencies of rotor system is studied by a new nonlinear asymptotic method.

• 摘要把转子的惯性力看成作用在轴上的外力，采用新的非线性渐近法研究热膨胀对转子系统固有横振频率的影响。