针对联轴器局部非线性转子系统的动力学问题，采用理论解析为主，辅以数值模拟手段，建立考虑区间特征，以啮合和接触为核心的套齿联轴器非线性动力学模型，在此基础上分析特征参数对联轴器力学特性的影响规律。研究含有套齿联轴器局部非线性转子系统的建模方法，分析该类转子系统的共振特性、特征参数对非线性响应和稳定性的影响。开展实验研究实现建模的实验数据支持、非线性现象的实验重现、理论结果的实验验证。研究方法和结果通过实际发动机低压转子-套齿联轴器结构进行检验，从而形成针对联轴器局部非线性转子系统动力学的一套理论分析方法，该理论方法有助于指导以发动机为代表的旋转机械的设计、轴系的稳定性分析、非线性振动控制。

Dynamics of rotor system with coupling local nonlinearity is studied with main method of theory analysis combined with numerical simulation. Considering the interval characteristics, nonlinear dynamic model of coupling with cores of meshing and contact is established, and the influence of characteristic parameters on mechanical properties of the coupling is analyzed. Modeling method of rotor system with local nonlinearity is studied; resonance characteristics of the rotor system and the effect of characteristic parameters on the nonlinear response and stability are analyzed. Research on experiments is carried out to realize the supporting model with experiment data, reproducing nonlinear phenomenon with experiments, experimental validation of the theoretical results. Research methods and results are tested by low pressure rotor - gear coupling structure in actual engine; a theoretical analysis method of dynamics of rotor system with coupling local nonlinearity is formed, this method is helpful to guide the rotating machinery design with deputy of aeroplane engine, stability analysis of rotor system and nonlinear vibration control.