Despite the remarkable success achieved in modelling the rotor-disk-blade coupling system, the existing research does not adequately consider both the structural flexibility and the rotating effects in the shaft, disk, and blade components. To bridge this gap, a dynamic modelling strategy has been developed for the shaft-disk-blade coupling system using an in-house code that integrates the Timoshenko beam and Mindlin-Reissner shell elements. In addition, two critical issues concerning the couplings of the shaft-disk and disk-blade are successfully addressed by using the penalty method in conjunction with the compatibility equation of deformation. Subsequently, the improved modelling strategies for the shaft-disk coupling system, with and without blade components, are verified by comparing their static/dynamic frequencies and modal shapes with those obtained from experiments and solid models in ANSYS. The results indicate that the beam-shell hybrid model exhibits good accuracy and high efficiency in simulating the dynamic characteristics of the shaft-disk coupling system with and without blades. The modal characteristics of the entire rotor system have a series of flexible vibration modes, including bending/torsion/axial mode for the shaft, pitch diameter/umbrella-type mode for the disk, and bending mode for the blade.

尽管在转子-圆盘-叶片耦合系统建模方面取得了显着的成功，但现有研究并未充分考虑轴、圆盘和叶片组件的结构灵活性和旋转效应。为了弥补这一差距，我们使用集成了 Timoshenko 梁和 Mindlin-Reissner 壳单元的内部代码，为轴-盘-叶片耦合系统开发了动态建模策略。此外，通过使用惩罚方法结合变形相容方程，成功解决了有关轴-盘和盘-叶片耦合的两个关键问题。随后，改进了带有和不带有叶片组件的轴盘耦合系统的建模策略，通过将它们的静态/动态频率和模态形状与从实验和 ANSYS 中的实体模型获得的结果进行比较来验证。结果表明，梁壳混合模型在模拟带叶片和不带叶片的轴盘耦合系统动态特性时均表现出良好的精度和较高的效率。整个转子系统的模态特性具有一系列柔性振动模态，包括轴的弯曲/扭转/轴向模态、盘的节径/伞型模态、叶片的弯曲模态。