Graphical analysis method of force transmission characteristics of airplane wing structure

Abstract

The present invention discloses a graphical analysis method of force transmission characteristics of an airplane wing structure, and belongs to the strength design field of airplane wing structures. The method comprises the steps of first performing finite element numerical simulation analysis on the airplane wing structure, and obtaining internal force characteristics of the airplane wing structure and load transmission characteristics between overall structures according to data result files; then drawing a force transmission route sketch map of the airplane wing structure in a force flow manner; and finally associating information in the drawn force transmission route sketch map with a database, and constructing a query system. Internal force transmission status between structures are expatiated simply and visually, and key bearing positions of structure strength are cleared through load transmission closed cycles formed by force transmission arrows. According to the method, the technical problems of engineering application can be solved in three aspects including bearing status description, internal force distribution reproduction and test and use guidance.

Description

technical field [0001] The invention relates to the field of aircraft wing structure strength design, in particular to a graphical analysis method for the force transmission characteristics of the aircraft wing structure. Background technique [0002] The strength design of aircraft wing surface plays a very important role in the safety of aircraft structure. At present, the external output type of strength analysis results is single, the conclusion of internal force calculation results is highly theoretical, and the concept is abstract. Make a comprehensive evaluation of the overall or local structural strength of the aircraft. Especially limited by the technical environment and conditions of use, this problem is particularly prominent in the assessment of structural strength and emergency repairs under harsh conditions. [0003] In the prior art, the aircraft wing surface strength is mainly calculated by large-scale finite element strength analysis software such as NASTR...

AI Technical Summary

Problems solved by technology

Although the finite element strength analysis software can directly display the overall stress and strain nephogram of the structure, the strength design analysis for specific situations still requires in-depth analysis based on data result files combined with engineering design methods

However, it is uneconomical and unrealistic to calculate and read the strength analysis results anytime and anywhere

Therefore, due to the limitations of time and technical conditions, designers and aircraft site maintenance personnel have very limited ability to absorb strength information, and it is difficult to efficiently handle design, modification, maintenance and other strength professional analysis and evaluation in the face of production maintenance and structural damage. Work

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