Vertical compression test device suitable for bending large panels

Abstract

The invention discloses a vertical compression test device suitable for bending large panels, belonging to the field of structural test mechanics. Fixed baffle plates are arranged on a base; sliding rails are welded to the inner sides of the fixed baffle plates; sliding bearings are installed on the sliding rails on two sides; a test piece is vertically arranged above the base and located betweenthe fixed baffle plates; the test piece, namely the panel is clamped by the sliding bearings; a loading chuck is arrange above the test piece; and the front and rear sides of the test piece are provided with detachable protective baffle plates. The vertical compression test device adopts a sliding bearing supporting mode, the friction force is reduced and the stress at the structural transition isbalanced, the out-of-plane displacement of the test piece is limited, so that that the out-of-plane load at the joint is prevent from causing material failure ahead of time, the compression load testof the bent large panel can be realized simply and efficiently, the structure is simple and reliable, the precision is high, the maintenance is simple and convenient, the compression test of the bentlarge panel can be realized on an ordinary press, and the vertical compression test device is suitable for use in various environments.

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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