基于积木式传递矩阵法双转子系统临界转速计算

Critical Speed Calculation of Dual Rotor System Based on Building Block Transfer Matrix Method

利用积木式的传递矩阵法推导了双转子系统临界转速的计算公式,建立了航空发动机双转子系统计算模型,计算了内外转子在不同工作转速下双转子系统临界转速,绘制了系统在临界转速下工作时的振型图,研究了双转子系统的耦合作用对于临界转速的影响。

By using the building block-type transfer matrix method,the calculation formula of the critical speed of the dual rotor system is derived,and the calculation model of the dual rotor system of the aircraft engine is established,and the critical speed of the dual rotor system under different working speeds of the internal and external rotors is calculated.The mode diagram of the system when working at the critical speed is drawn,and the influence of the coupling effect of the dual rotor system on the critical speed is studied.