CN108168756A - A kind of test method and experimental rig of bent plate tension field - Google Patents
A kind of test method and experimental rig of bent plate tension field Download PDFInfo
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- CN108168756A CN108168756A CN201711296131.9A CN201711296131A CN108168756A CN 108168756 A CN108168756 A CN 108168756A CN 201711296131 A CN201711296131 A CN 201711296131A CN 108168756 A CN108168756 A CN 108168756A
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- bent plate
- plate tension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- General Health & Medical Sciences (AREA)
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Abstract
The present invention relates to a kind of test methods of bent plate tension field, belong to aircraft structure test technical field, it is component bent plate tension box section first that it, which includes (1), bent plate tension box section includes being set to intermediate position and two bent plate tension test parts staggered relatively and two webs for fixing two tension bent plate testpieces, the bending direction of first bent plate tension test part and the second bent plate tension test part is is located remotely from each other, left web is held on the both sides of the first bent plate tension test part and the second bent plate tension test part with right web and is fixedly connected, it is final that two bent plate testpieces is made to form torsion box structure；(2) it is that load is applied to bent plate tension box section after, one end of the non-web of bent plate tension box section is fixed in support construction, and the non-web other end applies load.The test method of bent plate tension field of the present invention uses the method that box buckles bent plate testpieces, realizes the complex loading distribution of simulation curved stiffened panel, realizes the real simulation of aircraft side walls stand under load.
Description
Technical field
The invention belongs to the test methods and experiment of aircraft structure test technical field more particularly to a kind of bent plate tension field
Device.
Background technology
The main function of airframe siding be make fuselage have streamlined, bear fuselage bending and torsion direct stress and
Shear stress, stringer bear the axial force (pulling force or pressure) generated by fuselage Moment, and in addition to this, stringer is also used for branch
Covering is supportted, increases its limit stress for being pressurized and being cut.
The important aspect of design aircaft configuration is to understand aircaft configuration to bear the typical compound load of actual motion flight environment of vehicle
Characteristic under the conditions of lotus.It is that one special device of design is used for special loading environment in the normal way of airplane industry.To the greatest extent
Certain unique loading environment may be needed by managing this convention, and still, the combined load experimental rig for having adaptability is suitble to entirely
Size and time size body housing, curved wall plate, airfoil member apply bending, shearing, torsional load simultaneously, will have to aircaft configuration circle
Important value.
Invention content
The object of the present invention is to provide a kind of test methods and experimental rig of bent plate tension field, solve at present to bent plate
Power research is temporarily without preferable test method and the problem of experimental rig.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of test method of bent plate tension field, including
Component bent plate tension box section, the bent plate tension box section include being set to intermediate position and two bent plates staggered relatively
Tension test part and two webs for fixing two tension bent plate testpieces, the bending direction of two bent plate tension test parts is mutual
It is separate；
Load is applied to bent plate tension box section, support construction is fixed in the non-web one end of bent plate tension box section, and non-web is another
One end applies load.
A preferred scheme of the invention is that the bent plate tension test part includes examination area and strengthens area, the examination area
In the middle part of the bent plate tension test part and the reinforcement area is located at bent plate tension test part both sides.
A preferred scheme of the invention is that the reinforcement area of the bent plate tension test part and the intensity of the web are higher than
The examination area of bent plate tension test part.
A preferred scheme of the invention is to include shear-type load to the load that the bent plate tension box section applies and compression carries
Lotus；
It is described application shear-type load be：The reinforcement area of the loading end side of bent plate tension box section is applied and is prolonged perpendicular to web
The load in direction is stretched, the reinforcement area of the identical loading end opposite side of bent plate tension box section is applied perpendicular to another web extension side
To opposite load；
It is described application compressive load be：The reinforcement area of the loading end of bent plate tension box section is applied simultaneously and is directed toward bent plate tension
The load in the reinforcement area of box section fixing end.
The present invention also provides a kind of experimental rig of bent plate tension field, including：
Bent plate tension box section, the bent plate tension box section is by bending direction opposite the first bent plate testpieces and the second bent plate
Testpieces is formed；
Web, the web are held on the both sides of bent plate tension test part and are fixedly connected, and make two bent plate testpieces shapes
Into torsion box.
A preferred scheme of the invention is that the bent plate tension test part includes examination area and strengthens area, the examination area
In the middle part of the bent plate tension test part and the reinforcement area is located at bent plate tension test part both sides.
The bent plate tension field test method and device of the present invention focuses on characteristic of the research aircraft body siding by combined load, to grind
Study carefully fuselage wallboard stability, in order to verify fuselage wallboard characteristic, need design that can accurately reflect fuselage wallboard loading characteristic
Testpieces.The advantages that structural simulation is accurate, scheme is simple.
Description of the drawings
Attached drawing herein is incorporated into specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and be used to explain the principle of the present invention together with specification.
Fig. 1 is the bent plate tension box section structure figure of the present invention.
The bent plate tension field that Fig. 2 is the present invention tests schematic diagram.
Reference numeral：
1- the first bent plate tension test parts, 2- the second bent plate tension test parts, the left webs of 3-, the right webs of 4-, 11- stringers,
12- frame sections.
Specific embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction in the embodiment of the present invention
Attached drawing, the technical solution in the embodiment of the present invention is further described in more detail.
The object of the present invention is to provide a kind of experimental rig and method of bent plate tension field, to guarantee really to simulate
Bent plate is pressurized by cutting and compression shear combined load is distributed, and then effectively analyze the bearing capacity of bent plate.
In the present invention test method of bent plate tension field its mainly include following two aspects or step：
(1) it is component bent plate tension box section first, bent plate tension box section includes being set to intermediate position and staggered relatively
Two bent plate tension test parts and two webs for fixing two tension bent plate testpieces, with reference to shown in Fig. 1, the first bent plate testpieces
1 and second bent plate testpieces 2 be taken from the wall panel structure of actual airplane, including stringer 11 and frame section 12,11 side of setting of stringer
To vertical with the bending direction N of bent plate, and frame section 12 is then set along curved surface, and the first bent plate tension test part 1 and second is bent
For the bending direction of plate tension test part 12 to be located remotely from each other, left web 3 and right web 4 are held on the first bent plate tension test part 11
With the both sides of the second bent plate tension test part 12 and be fixedly connected, two bent plate testpieces is finally made to form torsion box structures；
(2) it is to apply load to bent plate tension box section after, one end (fixing end) of the non-web of bent plate tension box section is fixed
In in support construction 5, the non-web other end (loading end) applies load.The load of application can be applied by hydraulic actuator etc.
Add.
Bent plate tension test part includes examination area B and strengthens area A1, strengthens area A2, and examination area B is located at bent plate tension test
The middle part of part and reinforcement area A1, A2 are located at bent plate tension test part both sides.
The reinforcement area of bent plate tension test part and the intensity of web are higher than the intensity in the examination area of bent plate tension test part,
Design can eliminate the war ping effect of torsion box structure when applying load in this way, prevent on four angles of bent plate tension box section
Stress concentration is generated, influences stress and the deformation in bent plate testpieces examination area.
In the loading applied to bent plate tension box section, the type for applying load includes shear-type load and compression load
Lotus.Applying shear-type load is：The area that strengthens of the loading end side of bent plate tension box section is applied perpendicular to web extending direction
Load F1 applies perpendicular to another web extending direction load the reinforcement area of the identical loading end opposite side of bent plate tension box section
F2, load F1 and load F2 direction are opposite.Applying compressive load is：The reinforcement area of the loading end of bent plate tension box section is applied and is referred to
To the load F in the reinforcement area of bent plate tension box section fixing end.Shear-type load F1, shear-type load F2 and compressive load F apply simultaneously.
C is torsional centre in figure.
In the present invention, bent plate tension field computation core is the calculating of tension field COEFFICIENT K, and all calculating are all around this
Number carries out, and the calculation formula of K is：
In formula：R is bent plate radius of curvature；L refers to frame spacing；H is stringer spacing；T is the thickness of bent plate；L/H>When 2, take
2；τ is work shear stress；τ cr are permitting stress (being equivalent permitting stress when pressing, cut while acting on).
The chief destructive pattern of bent plate tension field has：Stringer is destroyed, bulkhead destroys, covering destroys and connector destroys.
By bent plate tension box section by turn round simulate torsion box by scissor state, and then study actual airplane airframe structure into
Enter the various characteristics and parameter of tension field, while apply axial compressive force, verify the Instability value under bent plate compression shear complex loading,
Show that bent plate tension field destroys allowable value.The studies above content can glue on the surface of bent plate tension box section or component surface
Foil gauge is pasted to acquire malformation, obtains relevant parameter.
The good effect that the test method and experimental rig of bent plate tension field of the present invention generate：
1) due to the method that the method for the present invention buckles bent plate testpieces using box, the complex loading of simulation curved stiffened panel is realized
Distribution realizes the real simulation of aircraft side walls stand under load.
2) testing program and structure design of the invention are simple, disclosure satisfy that the engineering demand of such load test.
The above, only optimal specific embodiment of the invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (6)
1. a kind of test method of bent plate tension field, which is characterized in that including
Component bent plate tension box section, the bent plate tension box section include being set to intermediate position and two bent plate tension staggered relatively
Testpieces and two webs for fixing two tension bent plate testpieces, the bending direction of two bent plate tension test parts is mutually remote
From；
Load is applied to bent plate tension box section, support construction, the non-web other end are fixed in the non-web one end of bent plate tension box section
Apply load.
2. the test method of bent plate tension field according to claim 1, which is characterized in that the bent plate tension test part packet
It includes examination area and strengthens area, the examination area is located in the middle part of the bent plate tension test part and the reinforcement area is positioned at bent plate
Power testpieces both sides.
3. the test method of bent plate tension field according to claim 2, which is characterized in that the bent plate tension test part
The intensity of reinforcement area and the web is higher than the examination area of bent plate tension test part.
4. the test method of bent plate tension field according to claim 1, which is characterized in that applied to the bent plate tension box section
The load added includes shear-type load and compressive load；
It is described application shear-type load be：The reinforcement area of the loading end side of bent plate tension box section is applied perpendicular to web extension side
To load, the reinforcement area of the identical loading end opposite side of bent plate tension box section is applied perpendicular to another web extending direction phase
Anti- load；
It is described application compressive load be：The reinforcement area of the loading end of bent plate tension box section is applied simultaneously and is directed toward bent plate tension box section
The load in the reinforcement area of fixing end.
5. a kind of experimental rig of bent plate tension field, which is characterized in that including：
Bent plate tension box section, the bent plate tension box section are tested by the first opposite bent plate testpieces of bending direction and the second bent plate
Part is formed；
Web, the web are held on the both sides of bent plate tension test part and are fixedly connected, and form two bent plate testpieces and turn round
Power box.
6. according to power 5 bent plate tension field experimental rig, which is characterized in that the bent plate tension test part include examination area and
Strengthen area, the examination area is located in the middle part of the bent plate tension test part and the reinforcement area is located at bent plate tension test part two
Side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296131.9A CN108168756A (en) | 2017-12-08 | 2017-12-08 | A kind of test method and experimental rig of bent plate tension field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711296131.9A CN108168756A (en) | 2017-12-08 | 2017-12-08 | A kind of test method and experimental rig of bent plate tension field |
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| Publication Number | Publication Date |
|---|---|
| CN108168756A true CN108168756A (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711296131.9A Pending CN108168756A (en) | 2017-12-08 | 2017-12-08 | A kind of test method and experimental rig of bent plate tension field |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112052520A (en) * | 2020-09-02 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Composite loading method for curved plate |
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| CN202783773U (en) * | 2012-05-29 | 2013-03-13 | 中国航空工业集团公司西安飞机设计研究所 | Lightning stroke-proof composite material wing box for airplane |
| CN104807703A (en) * | 2015-05-12 | 2015-07-29 | 中国飞机强度研究所 | Airtight and compression loading test device of bent plate |
| CN205203352U (en) * | 2015-12-11 | 2016-05-04 | 中国航空工业集团公司西安飞机设计研究所 | Close frame wallboard of longeron |
| CN205633010U (en) * | 2016-05-16 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Wing adds muscle box section testpieces |
| CN106240840A (en) * | 2016-07-05 | 2016-12-21 | 中国飞机强度研究所 | A kind of wing-box assay device of bending loading |
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2017
- 2017-12-08 CN CN201711296131.9A patent/CN108168756A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202783773U (en) * | 2012-05-29 | 2013-03-13 | 中国航空工业集团公司西安飞机设计研究所 | Lightning stroke-proof composite material wing box for airplane |
| CN104807703A (en) * | 2015-05-12 | 2015-07-29 | 中国飞机强度研究所 | Airtight and compression loading test device of bent plate |
| CN104807703B (en) * | 2015-05-12 | 2017-11-21 | 中国飞机强度研究所 | A kind of bent plate is airtight, compressive load experimental rig |
| CN205203352U (en) * | 2015-12-11 | 2016-05-04 | 中国航空工业集团公司西安飞机设计研究所 | Close frame wallboard of longeron |
| CN205633010U (en) * | 2016-05-16 | 2016-10-12 | 中国航空工业集团公司西安飞机设计研究所 | Wing adds muscle box section testpieces |
| CN106240840A (en) * | 2016-07-05 | 2016-12-21 | 中国飞机强度研究所 | A kind of wing-box assay device of bending loading |
Non-Patent Citations (2)
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| 孙为民 等: "民用大型加筋曲板在剪切载荷下失效破坏试验", 《南京航空航天大学学报》 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112052520A (en) * | 2020-09-02 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Composite loading method for curved plate |
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Application publication date: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |