论文部分内容阅读
研究模拟低压转子的动力学响应及支承优化问题。首先基于发动机模拟低压转子,建立弹性支承-两端带挤压油膜阻尼器的双盘转子动力学模型,推导其运动微分方程。对该动力学方程组,采用数值方法进行求解,得到其响应。转子系统的支承刚度对于其动力学响应影响很大,为了减小振动,采用多岛遗传算法与序列二次规划算法对转子系统的支承进行了多目标优化,得到了在工作转速下支承的最佳刚度。
The simulation of low-pressure rotor dynamic response and support optimization problems. First of all, based on the engine simulation of low pressure rotor, a two-disk rotor dynamics model of elastic support-squeeze film damper at both ends was established and its differential equation of motion was deduced. The dynamic equations, using numerical methods to solve, get its response. In order to reduce the vibration, the support stiffness of the rotor system has a great influence on its dynamic response. In order to reduce the vibration, the multi-objective optimization of the rotor system is carried out by using multi-island genetic algorithm and sequential quadratic programming algorithm. Good rigidity.