非线性转子动力学半逆问题

Semi Inverse Problem of Nonlinear Rotor Dynamics

讨论了转子动力学的主要逆问题——不平衡响应计算系统的最主要非线性环节（油膜轴承）的动态特性参数。由于具体工程应用所遇到的一些限制条件，在求解逆问题时，需要首先求解刚性简支转子的正问题，本文所处理的是一类半逆问题。

In the present paper, an important inverse problem of rotor dynamics——the identification of dynamic coefficients of oil film bearings, which are the most important nonlinear elements in a rotor system, has been investigated from unbalance responses. Because of some constraints in practical engineering applications, the forward problem of the rotor which is assumed to be simply supported on the rigid base has to be solved first. Hence, the problem discussed in the present paper is in fact a semi inverse problem.