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本文为带频率禁区的发动机转子动力优化设计。以转子的重量最轻为目标函数,约束条件为转子的各阶自振频率皆不落入转子工作频率的禁区并带边界约束,优化设计变量为转子的内外径、转子各轴段的长度及支承刚度等,一般可有20—30个设计变量。本文结合应用摄动逆求法和数学规则法进行转子的动力优化。一般其重分析次数不超过6—10次。
In this paper, the power optimization design of the engine rotor with frequency exclusion zone is presented. Taking the lightest weight of the rotor as the objective function, the constraint condition is that the natural frequency of the rotor does not fall into the prohibited area of the rotor operating frequency and has the boundary constraint. The optimal design variables are the inner and outer diameters of the rotor, the lengths of the rotor shafts, Support stiffness, etc., can generally have 20-30 design variables. In this paper, the dynamic optimization of the rotor is combined with the inverse perturbation method and the mathematical rule method. The general analysis of the number of no more than 6-10 times.