CN214200947U - Test fixture for axial compression loading of simply supported wallboard - Google Patents
Test fixture for axial compression loading of simply supported wallboard Download PDFInfo
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- CN214200947U CN214200947U CN202023253936.5U CN202023253936U CN214200947U CN 214200947 U CN214200947 U CN 214200947U CN 202023253936 U CN202023253936 U CN 202023253936U CN 214200947 U CN214200947 U CN 214200947U
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- axial compression
- test
- arc surface
- simply supported
- test fixture
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Abstract
The invention belongs to the field of wallboard axial compression buckling test clamps, and provides a test clamp for simply supported wallboard axial compression loading, which comprises: the axial compression test piece (3) is clamped between the upper arc surface supporting end (1) and the lower arc surface supporting end (2). The test fixture is simple in design, convenient to achieve in engineering, easy to produce, convenient to install, capable of being used repeatedly, capable of reducing test cost and capable of guiding the design of the support fixture for the type of test.
Description
Technical Field
The invention belongs to the field of wallboard axial compression buckling test clamps, and relates to a test clamp for axial compression loading of a simply supported wallboard.
Background
The wallboard axial compression test is a very important ring in a pyramid grading test of structural strength in the design process of an airplane structure, and can help an engineer to obtain the load when the wallboard bends; obtaining the instability damage load of the wallboard; verifying a theoretical calculation result; and providing test basis for determining final design parameters of the structure. In the strength analysis, the wall plate is generally regarded as a simple supporting boundary when the wall plate is simplified, so in the wall plate axial pressure test, the supporting boundary of a test piece should simulate the simple supporting boundary condition as much as possible. The support coefficient of the traditional wallboard axial compression test fixture is generally larger than 1.8, and the deviation is larger compared with the support coefficient of a simple support boundary condition, namely single C is 1.
Disclosure of Invention
The purpose of the invention is as follows: the test fixture for simply supporting the axial compression loading of the wall plate is simple in design and convenient to achieve in engineering.
Technical scheme
A test fixture for simple support wallboard axial compression loading, comprising:
the axial compression test piece 3 is clamped between the upper arc surface supporting end 1 and the lower arc surface supporting end 2.
The contact parts of the upper arc surface supporting end 1 and the lower arc surface supporting end 2 and the axial compression test piece 3 are arc-shaped.
A lateral supporting screw rod 4 is arranged in the front-back direction, and one end of the lateral supporting screw rod 4 is horizontally supported at the upper end and the lower end of the axial compression test piece 3; the other end of the lateral support screw 4 is horizontally supported on a fixed structure.
And an adjusting nut 5 is arranged at the contact part of the lateral support screw rod 4 and the fixed structure.
The contact part of the lateral support screw rod 4 and the axial compression test piece 3 is connected through threads.
The upper arc surface supporting end 1 and the lower arc surface supporting end 2 have the same structure.
Advantageous effects
The invention designs a set of test fixture for simply supporting the axial compression loading of the wall panel, the test fixture has simple design, is convenient to realize in engineering, is easy to produce, is convenient and fast to install, can be repeatedly used, reduces the test cost, and can guide the design of the supporting fixture for the test of the type.
Drawings
FIG. 1 is a front view of the structure of the present invention.
FIG. 2 is a schematic side view of the structure of the present invention.
Fig. 3 is a partially enlarged view of fig. 2.
Detailed Description
The following describes the technical solution of the present invention in detail with reference to the accompanying drawings, please refer to fig. 1 and fig. 2.
As shown in fig. 1, 2 and 3, a test fixture for axial compression loading of a simply supported wallboard comprises two parts which are vertically symmetrical, wherein 1 is an upper arc surface supporting end; 2 is a lower arc surface supporting end; 3 is an axial compression test piece; 4 is a lateral supporting screw rod; and 5, an adjusting nut. The upper clamping end and the lower clamping end are designed into a plane at one end and an arc at the other end, and one end of the plane is contacted with a loading head of the material testing machine, so that the uniform application of a compression load is ensured; the arc-shaped clamping end keeps line contact with the end face of the test piece, the ends of the upper supporting rod, the lower supporting rod, the left supporting rod and the right supporting rod are arc-shaped, point contact between the supporting points and the test piece is guaranteed, and the test piece is finally subjected to approximate simple support constraint through the measures.
In the test process, the cambered surface supporting end is contacted with the rigid foundation of the test piece, the posture of the test piece is adjusted through 4 adjusting nuts, the test piece is ensured to be vertical to the neutral, the action line of the resultant force of the load of the material testing machine passes through the section centroid of the test piece, the compressive load is applied, and the test is completed. And (4) disassembling the test piece after the test is finished, replacing a new test piece, and repeating the steps to realize the reuse of the clamp.
Claims (6)
1. A test fixture for simply supported wallboard axial compression loading, comprising:
the axial compression test piece (3) is clamped between the upper arc surface supporting end (1) and the lower arc surface supporting end (2).
2. The test fixture for axial compression loading of simply supported panels of claim 1,
the contact parts of the upper arc surface supporting end (1) and the lower arc surface supporting end (2) and the axial compression test piece (3) are arc-shaped.
3. The test fixture for axial compression loading of simply supported panels of claim 1,
a lateral supporting lead screw (4) is arranged in the front-back direction, and one end of the lateral supporting lead screw (4) is horizontally supported at the upper end and the lower end of the axial compression test piece (3); the other end of the lateral support screw rod (4) is horizontally supported on the fixed structure.
4. The test fixture for axial compression loading of simply supported panels of claim 3,
and an adjusting nut (5) is arranged at the contact part of the lateral supporting screw rod (4) and the fixed structure.
5. The test fixture for axial compression loading of simply supported panels of claim 3,
the contact part of the lateral supporting screw rod (4) and the axial compression test piece (3) is connected through threads.
6. The test fixture for axial compression loading of simply supported panels of claim 1,
the upper arc surface supporting end (1) and the lower arc surface supporting end (2) have the same structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023253936.5U CN214200947U (en) | 2020-12-29 | 2020-12-29 | Test fixture for axial compression loading of simply supported wallboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023253936.5U CN214200947U (en) | 2020-12-29 | 2020-12-29 | Test fixture for axial compression loading of simply supported wallboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214200947U true CN214200947U (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023253936.5U Active CN214200947U (en) | 2020-12-29 | 2020-12-29 | Test fixture for axial compression loading of simply supported wallboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN214200947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166622A (en) * | 2021-12-07 | 2022-03-11 | 西北工业大学 | Shaft pressure test fixture |
-
2020
- 2020-12-29 CN CN202023253936.5U patent/CN214200947U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166622A (en) * | 2021-12-07 | 2022-03-11 | 西北工业大学 | Shaft pressure test fixture |
| CN114166622B (en) * | 2021-12-07 | 2023-07-04 | 西北工业大学 | Shaft pressure test fixture |
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