CN104807703B - A kind of bent plate is airtight, compressive load experimental rig - Google Patents
A kind of bent plate is airtight, compressive load experimental rig Download PDFInfo
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- CN104807703B CN104807703B CN201510240070.9A CN201510240070A CN104807703B CN 104807703 B CN104807703 B CN 104807703B CN 201510240070 A CN201510240070 A CN 201510240070A CN 104807703 B CN104807703 B CN 104807703B
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Abstract
A kind of bent plate is airtight, compressive load experimental rig, including upper holder (1), bent plate test specimen (2), test fixture sub-assembly (3), bottom platen (4), wherein test fixture sub-assembly (3) is symmetrical structure, test fixture sub-assembly (3), bent plate test specimen (2) are arranged between bottom platen (4) and upper holder (1) and test fixture sub-assembly (3) is bolted to connection bottom platen (4), and bent plate test specimen (2) overlaps with the center line of upper holder (1), bottom platen (4).Bent plate of the invention is airtight, the boundary condition of the airtight lower side of bent plate test specimen (2) bent plate two of load effect of compressive load experimental rig energy accurate simulation, load trans path is clear, stand under load is accurate, the apparatus structure is simple, quick for installation and without the support extra to bent plate test specimen (2) and test fixture sub-assembly (3) progress, the test period is shortened, improves test efficiency.
Description
Technical field
The present invention relates to stryctyrak test technical field, in particular to a kind of bent plate is airtight, compressive load is tested
Device, for static(al) of the bent plate structure under the effect of airtight, compressive load, fatigue test.
Background technology
In the structure design of aerospace flight vehicle, in order to improve the stability of structure, frequently with stringer plus covering
Form, therefore, curved stiffened panel are the typical structures in aerospace structure.Aircraft in the flight course of atmosphere, due to
Pressure difference inside and outside wallboard be present so that wallboard bears the airtight load of normal direction.The compressive stability of the airtight lower curved stiffened panel of load effect
It is very important research topic in Research for Structural Strength with intensity.In order to verify the accurate of the reasonability of structure design and analysis
Property is, it is necessary to carry out the experiment of Material Stiffened Panel.And in the experiment of this class formation, the laterally supporting of the straight flange of bent plate two is key, directly
Connecing influences buckling load, breaking load and the failure mode of structure.
Generally use is simplifying in conventional this kind of experiment, conservative processing method, and bent plate is simplified into flat board (with straight generation
It is bent), the boundary condition imitation of two sides is constrained using the edge of a knife, limits the Normal Displacement of side.Tested for bent plate, in order to more preferable
Simulation real structure stress, displacement constraint should make to force constraint into, and restraint forces should be equal in real structure
Ring load suffered by the airtight lower bent plate of load effect.
Compression test due to above there is crossbeam, can according to the height of test specimen adjust seaming chuck position, under have precision high
Platform, therefore compression test is the ideal platform for being compressed experiment.But usual testing machine is nearby without track, it is difficult to is testing
Machine is outer to be supported to test specimen；In addition, there is column testing machine both sides, space is limited, it is necessary to which the gripping clamping apparatus of test specimen are succinct, simple
It is single, to avoid test specimen, fixture and testing machine during installation process and experiment from interfering.
The content of the invention
It is an object of the invention to solve above-mentioned deficiency of the prior art, there is provided it is a kind of simple in construction, quick for installation and
Bent plate without carrying out extra support to test specimen and test fixture sub-assembly is airtight, compressive load experimental rig.
The purpose of the present invention is achieved through the following technical solutions：A kind of bent plate is airtight, compressive load experimental rig, including upper
Present a theatrical performance as the last item on a programme, bent plate test specimen, test fixture sub-assembly, bottom platen, wherein, test fixture sub-assembly is symmetrical structure, test fixture group
Component, bent plate test specimen are arranged between bottom platen and upper holder, and test fixture sub-assembly is placed in the both sides of bent plate test specimen and with
Present a theatrical performance as the last item on a programme and be bolted to connection, bent plate test specimen overlaps with the center line of upper holder, bottom platen.
Preferably, the height of the test fixture sub-assembly is less than the height of the bent plate test specimen, the bent plate test specimen
Space is left between the upper holder.
In any of the above-described scheme preferably, the test fixture sub-assembly includes air bag box, side gripping clamping apparatus combine
Part, the bent plate test specimen are bolted to connection with side gripping clamping apparatus sub-assembly, and air inlet is provided with air bag box and is gone out
Gas port, air bag box combines to form a cavity and be built-in with air bag with the bent plate test specimen applies airtight load to the bent plate test specimen
Lotus.
In any of the above-described scheme preferably, the side gripping clamping apparatus sub-assembly includes support, crossbeam, arm-tie, column,
Wherein, air bag box is connected by support with crossbeam, and the bent plate test specimen connects column by arm-tie, and column is connected with crossbeam with bolt
Fixation is connect, crossbeam connects column between being arranged at two identical columns.
In any of the above-described scheme preferably, the column is provided with wide riser, narrow riser, and wide riser, narrow riser are fixed
It is connected on the base that column is connected with bottom platen, narrow riser is connected by the arm-tie with the bent plate test specimen, wide perpendicular
Plate is connected with the crossbeam.
In any of the above-described scheme preferably, the base of the column is provided with the pressure heart for adjusting the bent plate test specimen
The strip hole of position, the column through the bolt of strip hole by being fixedly connected with the bottom platen.
Bent plate provided by the present invention is airtight, the beneficial effect of compressive load experimental rig is, simple in construction, installation is soon
Victory and support that need not be extra to test specimen and the progress of test fixture sub-assembly, shorten the test period, improve test efficiency.Both
Suitable for slow test, fatigue test is also applied for；Bent plate is not only suitable for, is also applied for curved stiffened panel；Bent plate is not only suitable for exist
The experiment of airtight and compressive load effect, is also applied for the experiment in the effect of airtight and tensile load.
Brief description of the drawings
Fig. 1 is the structural representation of airtight, compressive load experimental rig the preferred embodiment of bent plate of the present invention；
Fig. 2 be according to the present invention bent plate is airtight, the combination of embodiment illustrated in fig. 1 test fixture of compressive load experimental rig
The structural representation of part；
Fig. 3 be according to the present invention bent plate is airtight, the laterally supporting fixture of the embodiment illustrated in fig. 1 of compressive load experimental rig
The structural representation of sub-assembly；
Fig. 4 is shown according to the structure of airtight, compressive load experimental rig the embodiment illustrated in fig. 1 column of bent plate of the present invention
It is intended to.
Reference：
1- upper holders, 2- test specimens, 3- test fixtures sub-assembly, 4- bottom platens, 301- air bags box, 302- bolts, 303- sides
Side gripping clamping apparatus sub-assembly, 303a- supports, 303b- crossbeams, 303c- arm-ties, 303d- columns, the wide risers of 303d1-, 303d2-
Narrow riser, 303d3- bases, 303d4- strip holes, 304- air inlets, 305- gas outlets.
Embodiment
In order to more fully understand that bent plate according to the present invention program is airtight, compressive load experimental rig, below in conjunction with the accompanying drawings
Airtight to bent plate of the invention, compressive load experimental rig a preferred embodiment is further elaborated explanation.
Reference picture 1- Fig. 4, bent plate provided by the invention is airtight, a preferred embodiment of compressive load experimental rig, upper pressure
Platform 1, bent plate test specimen 2, test fixture sub-assembly 3, bottom platen 4, wherein, test fixture sub-assembly 3 is symmetrical structure, test fixture
Sub-assembly 3, bent plate test specimen 2 are arranged between bottom platen 4 and upper holder 1, and test fixture sub-assembly 3 is placed in the two of bent plate test specimen 2
Side is simultaneously bolted to connection with bottom platen 4, and bent plate test specimen 2 overlaps with the center line of upper holder 1, bottom platen 4.The experiment
The height of fixture assembly 3 is less than the height of the bent plate test specimen 2, and sky is left between the bent plate test specimen 2 and the upper holder 1
Gap.The test fixture sub-assembly 3 includes air bag box 301, side gripping clamping apparatus sub-assembly 303, the bent plate test specimen 2 and side
Gripping clamping apparatus sub-assembly 303 is fixedly connected by bolt 302, and air inlet 304 and gas outlet 305, gas are provided with air bag box 301
Pocket 301 combines to form a cavity and be built-in with air bag with the bent plate test specimen 2 applies airtight load to the bent plate test specimen 2.
The side gripping clamping apparatus sub-assembly 303 includes support 303a, crossbeam 303b, arm-tie 303c, column 303d, its
In, air bag box 301 is connected by support 303a with crossbeam 303b, the bent plate test specimen 2 by arm-tie 303c connection column 303d,
Column 303d is joined with bolts with crossbeam 303b, and crossbeam 303b connects column between being arranged at two identical column 303d
303d.Column 303d is provided with wide riser 303d1, narrow riser 303d2, and wide riser 303d1, narrow riser 303d2 are fixedly connected and set
It is placed on the base 303d3 that column 303d is connected with bottom platen 4, narrow riser 303d2 passes through the arm-tie 303c and the bent plate
Test specimen 2 is connected, and wide riser 303d1 is connected with the crossbeam 303b.The base 303d3 of the column 303d is provided with for adjusting
The strip hole 303d4 of the pressure heart position of the bent plate test specimen 2, the column 303d through strip hole 303d4 bolt by consolidating
Surely the bottom platen 4 is connected.
As shown in figure 1, under the effect of airtight and compressive load, bent plate test specimen 2, experiment test fixture sub-assembly 3 are placed on down
Present a theatrical performance as the last item on a programme 4 top, experiment test fixture sub-assembly 3 is secured by bolts in bottom platen 4, and upper holder 1 is located at the upper of bent plate test specimen 2
Side.
Fig. 2 is illustrated that the structure of test fixture sub-assembly 3, and test fixture sub-assembly 3 includes air bag box 301 and side branch
Fixture assembly 303 is held, bent plate test specimen 2 is connected with side gripping clamping apparatus sub-assembly 303 by bolt 302, air bag box 301 and song
Plate test specimen 2 forms a cavity, a built-in air vesicle, to apply airtight load, each face in the inner side of air bag box 301 to test specimen
Uniform stand under load.Air bag box 301 has two holes：Air inlet 304, gas outlet 305.
As shown in figure 3, side gripping clamping apparatus sub-assembly 303 includes support 303a, crossbeam 303b, arm-tie 303c and column
303d.Support 303a is used to connect air bag box 301 and crossbeam 303b, and the load transmission of the side of air bag box 301 gives crossbeam 303b；Draw
Plate 303c is used to connect test specimen and column 303d；Column 303d is joined with bolts with crossbeam 303b.Arm-tie 303c and column
Each one of 303d or so, and it is symmetrical on 2 longitudinally asymmetric line of bent plate test specimen, crossbeam 303b is used to connect two column 303d of left and right.
It is respectively wide perpendicular that the column 303d that side gripping clamping apparatus sub-assembly 303 is connected with bottom platen 4, which is provided with two risers,
Plate 303d1 and narrow riser 303d2, two risers connect as one structure vertical and are arranged on base 303d3, set on base 303d3
Strip hole 303d4 is equipped with, base is fixedly connected with state's inner bolt through strip hole 303d4 with bottom platen 4, by adjusting strip hole
303d4 can adjust the pressure heart position of bent plate test specimen 2.
Bent plate provided by the invention is airtight, compressive load experimental rig bent plate test specimen 2 is formed certainly with test fixture sub-assembly 3
Balance system, according to airtight magnitude of load, using the relevant knowledge of the mechanics of materials, it can accurately calculate two side arm-tie 303c
Tensile load, so as to check the rigidity and intensity of each part in fixture, excessive change does not occur with fixture during guarantee test
Shape is even destroyed.
Above in association with the present invention bent plate is airtight, compressive load experimental rig preferred embodiment is described in detail, but simultaneously
Non- is limitation of the present invention, for example, bent plate provided by the invention is airtight, compressive load experimental rig air inlet 304, gas outlet
305 position etc., every technical spirit according to the present invention belong to this hair to any simple modification made for any of the above embodiments
Bright technical scope, it is also necessary to explanation, according to the present invention bent plate is airtight, the model of compressive load experimental rig technical scheme
Farmland includes any combination between each part mentioned above.
Claims (1)
1. a kind of bent plate is airtight, compressive load experimental rig, it is characterised in that：Including upper holder (1), bent plate test specimen (2), experiment
Fixture assembly (3), bottom platen (4), wherein, test fixture sub-assembly (3) is symmetrical structure, test fixture sub-assembly (3), bent
Plate test specimen (2) is arranged between bottom platen (4) and upper holder (1), and test fixture sub-assembly (3) is placed in the two of bent plate test specimen (2)
Side is simultaneously bolted to connection with bottom platen (4), and bent plate test specimen (2) overlaps with the center line of upper holder (1), bottom platen (4)；
The height of the test fixture sub-assembly (3) is less than the height of the bent plate test specimen (2), the bent plate test specimen (2) and institute
State and leave space between upper holder (1)；
The test fixture sub-assembly (3) includes air bag box (301), side gripping clamping apparatus sub-assembly (303), the bent plate test specimen
(2) it is fixedly connected with side gripping clamping apparatus sub-assembly (303) by bolt (302), air bag box is provided with air inlet on (301)
(304) one cavity of formation is combined with the bent plate test specimen (2) and is built-in with air bag to institute with gas outlet (305), air bag box (301)
State bent plate test specimen (2) and apply airtight load；
The side gripping clamping apparatus sub-assembly (303) includes support (303a), crossbeam (303b), arm-tie (303c), column
(303d), wherein, air bag box (301) is connected by support (303a) with crossbeam (303b), and the bent plate test specimen (2) passes through arm-tie
(303c) connection column (303d), column (303d) are joined with bolts with crossbeam (303b), and crossbeam (303b) is arranged at two
Column (303d) is connected between identical column (303d)；
The column (303d) is provided with wide riser (303d1), narrow riser (303d2), wide riser (303d1), narrow riser
(303d2), which is fixedly connected, to be arranged on the base (303d3) that column (303d) is connected with bottom platen (4), and narrow riser (303d2) is logical
Cross the arm-tie (303c) to be connected with the bent plate test specimen (2), wide riser (303d1) is connected with the crossbeam (303b)；
The base (303d3) of the column (303d) is provided with the strip of the pressure heart position for adjusting the bent plate test specimen (2)
Hole (303d4), the column (303d) through the bolt of strip hole (303d4) by being fixedly connected with the bottom platen (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510240070.9A CN104807703B (en) | 2015-05-12 | 2015-05-12 | A kind of bent plate is airtight, compressive load experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510240070.9A CN104807703B (en) | 2015-05-12 | 2015-05-12 | A kind of bent plate is airtight, compressive load experimental rig |
Publications (2)
| Publication Number | Publication Date |
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| CN104807703A CN104807703A (en) | 2015-07-29 |
| CN104807703B true CN104807703B (en) | 2017-11-21 |
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| CN201510240070.9A Active CN104807703B (en) | 2015-05-12 | 2015-05-12 | A kind of bent plate is airtight, compressive load experimental rig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168756A (en) * | 2017-12-08 | 2018-06-15 | 中国航空工业集团公司西安飞机设计研究所 | A kind of test method and experimental rig of bent plate tension field |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366026B (en) * | 2015-11-24 | 2018-07-13 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of axis pressure Material Stiffened Panel post-buckling carrying design method |
| CN112857762B (en) * | 2020-12-29 | 2023-05-23 | 中国航空工业集团公司西安飞机设计研究所 | Transition section for semi-ellipsoidal structural strength test |
| CN114199691B (en) * | 2022-01-20 | 2023-11-28 | 中国商用飞机有限责任公司 | Aircraft fuselage panel strength test device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7246527B2 (en) * | 2004-11-12 | 2007-07-24 | The Boeing Company | E-fixture |
| CN202013310U (en) * | 2010-11-15 | 2011-10-19 | 中国航空工业集团公司北京航空材料研究院 | Testing device used for realizing sheet pulling/pressing fatigue crack growth in corrosive environment |
| CN102288481B (en) * | 2011-07-08 | 2014-03-19 | 中国飞机强度研究所 | Vacuumizing loading equipment and test method thereof |
| CN103149075B (en) * | 2012-12-10 | 2015-01-28 | 中国飞机强度研究所 | Strength testing device and testing method for fuselage wall plate under action of combined loads |
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2015
- 2015-05-12 CN CN201510240070.9A patent/CN104807703B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168756A (en) * | 2017-12-08 | 2018-06-15 | 中国航空工业集团公司西安飞机设计研究所 | A kind of test method and experimental rig of bent plate tension field |
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| CN104807703A (en) | 2015-07-29 |
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