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本文研究了某航空发动机模拟低压转子的动力学响应随系统参数的变化。首先基于实际的发动机模拟低压转子,建立了弹性支承-两端带挤压油膜阻尼器的双盘转子动力学模型,推导了其运动微分方程。对于这个12维的动力学方程组,采用数值方法进行了求解。主要研究了不同两盘质量比下系统响应的影响。并在多个条件下发现了非线性的拟周期响应。
In this paper, the dynamic response of an aero-engine simulated low-pressure rotor with the change of system parameters is studied. First, based on the actual engine simulation of low-pressure rotors, a two-disk rotor dynamics model with elastic support and squeeze film damper at both ends was established, and its differential equation of motion was deduced. For this 12-dimensional kinetic equations, the numerical method was used to solve the problem. Mainly studied the impact of the system response under different two-plate mass ratio. And in a number of conditions found a non-linear quasi-periodic response.