Nonlinear Numerical Simulation of Rotor Dynamics
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摘要: 将Euler(欧拉)角表示引入转子动力学系统,用以描述转子的非线性旋转运动,并与时间有限元相结合,进而提出了包含非线性因素的转子动力学保辛数值求解方法.以此方法为基础,分析了悬臂梁-圆盘转子系统的涡动行为.数值结果证明该数值解法的有效性与正确性,可用于各种转子系统涡动行为分析.Abstract: A symplectic numerical method using the finite element algorithm in time scheme was proposed for rotor dynamics involving nonlinear factors, in which the Euler angle representation was introduced into the dynamic rotor system for the description of the nonlinear motion of rotation. The swirling motion of the rotor system including the beam-disc combination was analyzed. The numerical results demonstrate the validity and correctness of the proposed method, which can be used for the analysis of swirling motion of rotor systems in various situations.
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Key words:
- rotor dynamics /
- nonlinear /
- swirling motion /
- gyro /
- Euler angle
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