Anti-bending design method for aircraft single-lap structure test piece

Abstract

The invention relates to an anti-bending design method of an airplane single lap structure test article. The anti-bending design method comprises the steps that an integral inner side plate symmetrical structural member and an integral outer side plate symmetrical structural member are designed, and are connected together by a connecting bolt in an examination area; two anti-bending side plates are disposed in the examination area to form a single lap structure anti-bending test article. The anti-bending design method of the airplane single lap structure test article is advantageous in that one single lap structure is designed to be in a connection structure form having two single lap surfaces and two integral symmetrical test articles; a technical defect of difficulty in eliminating the outward bending of the single lap structural surface is solved; a theoretical basis is correct, an engineering concept is explicit, a force transmission route is clear, the design of the test article is simple, and execution of test is convenient; a difficulty in realizing the effective anti-bending restraining of the airplane single lap structure test article is effectively solved.

Description

Technical field [0001] The invention belongs to the field of aviation fatigue damage tolerance test, and in particular relates to a bending prevention design method for a test piece of an aircraft single-lap structure. Background technique [0002] In aircraft structure, single-lap structure is very common, such as figure 1 Shown. However, the test verification of the single-lap structure is relatively small. The main reason is that the single-lap structure test piece is not easy to design, especially the out-of-plane bending of the single-lap test piece is not easy to eliminate. In the previous design of single lap test, some used to increase the size of the test piece and realized its own bending moment balance with the help of the frame section of the body, and some used small-scale test piece-level test pieces to prevent the single lap structure from being damaged by the anti-bending fixture. Out-of-plane bending often results in test distortion due to improper design or use...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-bending design method for a single-lap structure test piece of an aircraft, so as to solve the problem that the current single-lap structure test piece is easy to bend during the test, or the test is distorted by using a clamp

Images