Testing device for applying bidirectional compression load

Abstract

The invention discloses a test device for applying a bidirectional compression load, which comprises a test device frame, an axial compression and force measurement assembly, a transverse compression assembly, a test piece assembly and an upper platform and leveling assembly; the test device frame provides mounting positions for the axial compression and force measurement assembly and the upper platform and leveling assembly; thetest device frame, the axial compression and force measurement assembly and the upper platform and leveling assembly form a self-balancing device; the axial compression and force measurement assembly and the transverse compression assembly are respectively arranged in two directions of the test piece assembly to provide a bidirectional compression load; the upper platform and leveling assembly is arranged above the test piece assembly and at the top of the test device frame and is used as an upper compression platform capable of being leveled; during a test, bidirectional load application is realized through expansion and contraction of actuating cylinders in the axial compression and force measurement assembly and the transverse compression assembly. The test device provided by the invention can be used for carrying out a one-way compression or two-way compression load test on a structural member level test piece, and a test basis is provided for research on two-way compression of the structural member.

Description

technical field [0001] The invention relates to the field of aircraft strength tests, in particular to a test device for applying bidirectional compressive loads. Background technique [0002] Straight panels or stiffened panels are typical stressed members in structures such as aircraft and surface ships, some of which are in a state of bidirectional compression. It is a very important research topic, especially for the reinforced thin-walled structures that are mostly used in modern aircraft, the research on the stability and strength under compressive loads is particularly important, so it is necessary to realize the application of this bidirectional compressive load in the laboratory, so that Verifying the stability and strength of the designed structural parts can also provide a basis for structural optimization and improvement. [0003] At present, the commonly used method in foreign countries is to use the pressure table to directly compress on the standard testing m...

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Problems solved by technology

[0003] At present, the commonly used method in foreign countries is to use the pressure table to directly compress on the standard testing machine. The test pieces selected for the bidirectional compression test in foreign countries are all component and sample level test pieces. No report; no bidirectional compressive loading test or similar test for this type of structural member has been carried out in China at this stage

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