Method for analyzing strength load of combined blade of aero-engine

Abstract

The invention belongs to the technical field of aero-engine design, and particularly relates to an aero-engine linked blade strength load analysis method which comprises the following steps: S1, establishing a single blade grid model, and establishing a linked load data import model; s2, based on finite element analysis software, applying a load to the single blade sub-net model to obtain a load finite element analysis model of the single blade; s3, through the connection loading load data import model, setting connection loading parameters; s4, generating a linked blade finite element model and a linked load according to the linked parameters and the load finite element analysis model of the unit blade; and S5, reading the joint load, judging whether the temperature load at the connection position of the inner ring and the outer ring is continuous or not, if not, resetting the node tolerance, repeating the step S4 until the temperature load is continuous, and storing the joint blade finite element model. The method can effectively shorten the finite element pretreatment time and improve the calculation precision, and is suitable for the pretreatment of the finite element analysis of the combined blade of the aero-engine.

Description

technical field [0001] The invention belongs to the technical field of aero-engine design, and in particular relates to a method for analyzing the strength load of an aero-engine coupled blade. Background technique [0002] As the heart of the aircraft, the aero engine is known as the jewel in the crown of modern industry, and it is a high-speed rotating thermomechanical device. For the engine stator blades, especially the engine turbine guide vanes, which are located behind the combustion chamber and before the tail nozzle, they are in a harsh environment of high temperature, high pressure, and high speed. They must not only withstand high-speed airflow, but also bear thermal and mechanical loads. etc., the loading environment is very harsh, so in the structural design of the turbine guide vane, under the premise of ensuring the performance, structural safety and reliability are important factors to be considered in the design. In order to ensure the safe and reliable oper...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of low load processing efficiency and poor accuracy in the pre-processing of the finite element strength analysis of the existing aero-engine-mounted blades, a strength-load analysis method for the aero-engine-mounted blades is proposed to effectively save the finite element pre-processing time and improve the accuracy of the joint. Efficiency and accuracy of blade strength simulation analysis

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