A vertical compression test device suitable for bending large wall panels

A compression test and siding technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of large ultimate compression load, difficult mechanical strength assessment, high price, etc., to reduce the impact of friction, convenient Precise vertical loading, the effect of preventing buckling failure

Active Publication Date: 2021-09-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A vertical compression test device suitable for bending large wall panels
  • A vertical compression test device suitable for bending large wall panels
  • A vertical compression test device suitable for bending large wall panels

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Embodiment Construction

[0022] In order to make the object, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be pointed out that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0023] Such as Figure 1~4 As shown, the present invention is a test device suitable for bending large wall board compression, including base 1, reinforcing rib 2, fixed baffle 3, detachable protective baffle 4, slide rail 5, anti-buckling simply supported knife edge 6, loading Chuck 7, simply supported knife edge 8 at the loading end, test piece wall plate 9, sliding bearing 10, simply supported knife edge 11 at the fixed support end, inclined pad 12-, test piece 13. The left-right symmetrical fixed baffle 3 is welded on the base 1, and the base 1 and the fixed baffle 3 are reinforced wit...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/12
CPCG01N3/12
Inventor 汪浩文白树伟闫冰姜楠李文博彭益州张俊华童明波倪彦朝王家军李壮姜炳强张收运
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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