Strength testing device and testing method for fuselage wall plate under action of combined loads

Abstract

The invention belongs to a strength testing device and a testing method for a fuselage wall plate under the action of combined loads. The strength testing device for the fuselage wall plate under the action of the combined loads comprises corner boxes, airtight end plates, the fuselage wall plate, a hinge, mandrils, keels and arc-shaped rubber plates, wherein the airtight end plates are arranged at two ends of the fuselage wall plate, the corner boxes are arc-shaped components and installed at a combined part between the airtight end plates and the fuselage wall plate, the keels are arc-shaped frames, the keels are connected in a pasting mode through the arch-shaped rubber plates to form a keel group, the mandrils are installed on web plates at two ends of the keel group, and the hinge is arranged on the fuselage wall plate and the keel group and achieves hinged connection of the fuselage wall plate and the keel group. According to the strength testing device and the testing method for the fuselage wall plate under the action of the combined loads, boundary conditions of the fuselage wall plate can be effectively imitated, the combined loads are conveniently used for achieving a strength test, and due to the fact that drawing loads and compressing loads are not used at the same time, the applied combined loads are one kind of or two kinds of or three kinds of internal pressure loads, drawing loads (or compressing loads) and shear loads.

Description

technical field [0001] The invention belongs to the aircraft strength test technology, and relates to a composite load strength test device and a test method for fuselage wall panels. Background technique [0002] The fuselage panel strength test is the most important basis for aircraft fuselage design. Currently, the fuselage panel strength tests carried out in China include: fuselage panel tensile test, fuselage panel compression test, and fuselage panel shear test. Test, fuselage panel internal pressure test, fuselage panel tension + internal pressure load test, etc.; form a series of strength test devices. [0003] The fuselage panel strength test includes eleven load conditions: internal pressure condition, tension condition, compression condition, shear condition, internal pressure + tension condition, internal pressure + compression condition, internal pressure condition Compression + shear conditions, tension + shear conditions, compression + shear conditions, inter...

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Problems solved by technology

[0004] For example, the research on the allowable value of compression and shear of the fuselage panels of a certain type of aircraft is to carry out axial compression and shear tests on 36 and 50 fuselage panels respectively, aiming to obtain The determination of the allowable value provides a basis. The loading device in this study can only perform single-item compression and single-item shear load tests, which have relatively large limitations in actual use.

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