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Method for Optimizing Multi-Stage Components of Large-Scale High-Speed Rotary Equipment Based on Monte Carlo Bias Evaluation
Method for Optimizing Multi-Stage Components of Large-Scale High-Speed Rotary Equipment Based on Monte Carlo Bias Evaluation
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机译:基于蒙特卡洛偏差评估的大型高速旋转设备多阶段部件优化方法
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摘要
The present invention provides a method for optimizing multi-stage components of large-scale high-speed rotary equipment based on Monte Carlo bias evaluation. The method comprises: obtaining an offset of a contact surface between all stages of rotors according to a multi-stage rotor propagation relationship, and calculating coaxiality according to a coaxiality formula; calculating a cross sectional moment of inertia of the contact surface, and obtaining a bending stiffness according to a bending stiffness formula; obtaining the amount of unbalance of a rotor according to a rotor error propagation relationship; and obtaining a probability relationship between the assembly surface runout of all stages of aero-engine rotors and the final geometric concentricity, the amount of unbalance and stiffness of multi-stage rotors by using a Monte Carlo method, and optimizing the tolerance distribution and bending stiffness of the aero-engine multi-stage rotors.
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