We used Poincare map and bifurcation map to analyze the nonlinear dynamic response of a eight-degree-of-freedom rotor system with two disks supported on a squeeze film damper(SFD) as shown in Fig.1.

• 对双盘悬臂柔性转子-非同心型挤压油膜阻尼器(SFD)系统进行了非线性动力学分析。计算结果表明：双盘转子-非同心型SFD系统具有丰富的非协调响应，系统响应中存在大量的亚谐、超谐、非协调(正，反进动)甚至轨道不规则的响应。