Digital twin modeling method for aero-engine turbine disc-rotor-supporting system

Abstract

The invention discloses a digital twin modeling method for an aero-engine turbine disc-rotor-supporting system. The method comprises the following steps: establishing a digital twin sub-model of the aero-engine turbine disc-rotor-supporting system according to the characteristics of the turbine disc-rotor-supporting system, initial working conditions / environmental parameters of the turbine disc-rotor-supporting system and a physical action relationship among the turbine disc, a rotating shaft and a main bearing; establishing a multi-physical-field integrated simulation platform containing a plurality of sub-models, and fusing the sub-models into a unified physical model; establishing a multi-physical-field integrated simulation platform and a unified physical model; inputting the working condition / environmental parameter of the aero-engine bearing into a unified physical model, comparing and analyzing a simulation calculation result with the actually measured signal subjected to noisereduction feature extraction processing, and optimizing the unified physical model to obtain a real-time synchronous aero-engine turbine disc-rotor-supporting system digital twin model. The defects that an existing modeling method is too single in consideration factor and insufficient in consideration of real-time change of the operation condition can be overcome.

Description

technical field [0001] The invention belongs to the technical field of mechanical diagnosis intelligence and digitalization, and in particular relates to a digital twin modeling method of an aeroengine turbine disk-rotor-support system. Background technique [0002] Aeroengine is a typical high-speed rotating machinery, and it is an important standard to measure a country's technological level, military strength and comprehensive national strength. The turbine disk-rotor-support system is composed of turbine disk, rotating shaft, main bearing and other structures. It is the core component of an aero-engine. It has been working under high-speed, high-temperature, and high-load conditions for a long time. The structure is complex and vibration failures often occur, but At present, the failure mechanism of the aeroengine turbine disk-rotor-support system is not yet clear. Therefore, how to explain the failure mechanism from the perspective of the positive problem by establishi...

AI Technical Summary

Problems solved by technology

In the actual operation process, the turbine disk-rotor-support system of the aeroengine works under the condition of multi-physics coupling, and at the same time it is affected by high temperature, high speed, and high load. Only a single physical model is considered, which will inevitably lead to inaccuracies sex

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