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首页> 外文期刊>Journal of Zhejiang University. Science, A >Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method
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Investigation of the dynamic characteristics of a dual rotor system and its start-up simulation based on finite element method

机译：基于有限元法的双转子系统动态特性研究及其启动仿真

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Recently, the finite element method (FEM) has been commonly applied in the engineering analysis of rotor dynamics. Gyroscopic moments, rotary inertia, transverse shear deformation and gravity can be included in computational models of rotor-bearing systems. In this paper, a finite element model and its solution method are presented for the calculation of the dynamics of dual rotor systems. A typical structure with two rotor shafts is discussed and the procedure for obtaining the coupling motion equations of the subsystems is illustrated. A computer program is developed to solve critical speeds and to simulate the transient motion. The influence of gyroscopic moments on co-rotation and counter-rotation is analyzed, and the effect of the speed ratio on critical speed is studied. The dynamic characteristics under different conditions of increasing speed during start-up are demonstrated by comparison with transient nodal displacements. The presented model provides a complete foundation for further investigation of the dynamics of dual rotor systems.
机译：最近，有限元方法（FEM）通常在转子动力学的工程分析中应用。陀螺仪矩，旋转惯量，横向剪切变形和重力可以包括在转子系统的计算模型中。本文介绍了用于计算双转子系统动态的有限元模型及其解决方法。讨论了具有两个转子轴的典型结构，并且示出了用于获得子系统的耦合运动方程的过程。开发计算机程序以解决临界速度并模拟瞬态运动。分析了陀螺仪矩对旋转和反旋转的影响，研究了速比对临界速度的影响。通过与瞬态节点位移进行比较，证明了在启动期间提高速度的不同条件下的动态特性。所提出的模型为进一步调查了双转子系统的动态提供了完整的基础。

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