Method for optimized design of external support of engine

Abstract

The invention relates to a method for optimized design of an external support of an engine. The method comprises a step S1 of design input, a step S2 of scheme design, a step S3 of technical design, a step S4 of detailed design, a step S5 of intensity check and a step S6 of determination. According to the method for optimized design of the external support of the engine, through optimization, weight reduction and intensity check on the support of the engine at a design stage, the weight of the engine support is reduced as far as possible on the basis of meeting the intensity requirements, the requirements on lightweight of the engine are met, the research and development cycle of the engine is shorter, the performance of the engine is more excellent, the research and development cost is reduced, and the research and development cycle is shortened.

Description

technical field [0001] The invention belongs to the technical field of design of an external bracket of an aero-engine, and in particular relates to an optimal design method for an external bracket of an engine. Background technique [0002] From domestic and foreign aero-engine failure statistics, 50% of the failures are caused by the failure of external pipelines, wires, and brackets, ranking first among structural failures. It can be seen that the safety and reliability of external systems is very important. [0003] The external accessories of the engine and the piping all need support brackets for positioning and restraint, and the structural strength of the brackets is crucial to the realization of the support function. Especially for some brackets in high temperature areas, the harsh environment puts forward higher requirements for the design of bracket material selection. At the same time, the external bracket of the engine also needs to bear the vibration from the ...

AI Technical Summary

Problems solved by technology

[0005] 1. The strength reserve coefficient of the bracket is not enough

It affects the life of the bracket, cannot meet the requirements of the engine, and even affects the safety of the engine;

[0006] 2. The strength reserve factor of the bracket is too high

The designed bracket is too heavy, which increases the weight of the engine and affects the thrust-to-weight ratio of the engine

[0007] At present, the system optimization design method for the design of the external bracket of the aero-engine has not been proposed in China; and foreign aircraft / engine companies have no publicly published materials and patents in this regard due to technical confidentiality and other reasons

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