基于地板结构的机身双层双向加载技术

doi:10.7527/S1000-6893.2017.21712

Abstract

Abstract: The vertical loading method for the structural test of the civil aircraft is investigated. A comparison of three loading schemes (based on the skin tension pads, the monolayer cabin floor structure and the double-deck cabin floor structure) shows that the loading scheme based on the double-deck cabin floor structure is more applicable as it can provide better stress simulation for the frame structure. A double-deck bi-directional loading technology based on the airliner cabin floor structure is then proposed. By developing a loading strategy and related loading device design technique, effective fuselage loading under different test cases with fixed lever ratio loading system is realized. The loading device design is proved to be capable of engineering application as it performed a load error of less than 1% in the full-scale verification test. The technology has successfully improved the quality and efficiency of the airworthiness verification test of a certain aircraft, providing technical references for similar tests.

Key words: civil aircraft, strength test, static test, load treatment, loading technique, cabin floor beam

CLC Number:

V216.1

LIU Wei, TENG Qing, LIU Bing. Double-deck bi-directional loading technology based on airliner cabin floor structure[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(5): 221712-221712.

References

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Double-deck bi-directional loading technology based on airliner cabin floor structure

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