A vertical compression test device suitable for bending large wall panels

Abstract

The invention discloses a vertical compression test device suitable for bending large wall panels, which belongs to the field of structural test mechanics. A fixed baffle is arranged above the base, and slide rails are welded on the inside of the fixed baffle. Sliding bearings are installed on the rail; the test piece is placed vertically above the base and between the fixed baffles, the wall plate of the test piece is clamped by the sliding bearing, and a loading chuck is set above the test piece; The detachable protective baffle; the invention adopts the sliding bearing support method, which reduces the friction force and balances the stress at the structural transition, limits the out-of-plane displacement of the test piece, and prevents the material from being damaged in advance due to excessive out-of-plane load at the joint. It is relatively simple and efficient to realize the loading test of bending large wall plate compression, and the present invention has simple and reliable structure, high precision and easy maintenance, and the compression test of bending large wall plate can be realized on ordinary presses, and is suitable for various environments use below.

Description

technical field [0001] The invention relates to the field of structural test mechanics, and refers to a test device for ensuring that a large wall plate bears a pure compression load during the entire loading process, in particular a vertical compression test device suitable for bending a large wall plate. Background technique [0002] Among the various engineering structures in the aerospace field, the upper wall plate butt joint structure is an important part of the wing body butt joint. Through the wall plate compression test, various forms of the butt joint structure are selected and tested, and the wall plate structure is analyzed and compared under the compressive load. The ultimate load and failure mode are important research topics in structural design. The actual wall panel structure is mostly bent large wall panel, and the ultimate load tonnage is relatively large. It is urgent to implement specific loads and specific environmental conditions on various materials i...

AI Technical Summary

Problems solved by technology

[0003] For a long time, it has been very difficult to achieve low cost for this type of material testing

A multi-point coordinated hydraulic servo loading system can be used for the compression test of large bending panels. However, due to the relatively large ultimate compressive load and the large actual size of the test piece, special fixtures need to be designed. These devices are expensive and have strict requirements on the use environment and personnel operation, and the size of the structural parts is limited by the size and tonnage of the testing machine. For large structural parts and machines that bend large panels under heavy loads There are difficulties in strength assessment

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