CN107063852A - A kind of stringer class formation test fixture - Google Patents
A kind of stringer class formation test fixture Download PDFInfo
- Publication number
- CN107063852A CN107063852A CN201710179060.8A CN201710179060A CN107063852A CN 107063852 A CN107063852 A CN 107063852A CN 201710179060 A CN201710179060 A CN 201710179060A CN 107063852 A CN107063852 A CN 107063852A
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- CN
- China
- Prior art keywords
- clamping plate
- stringer
- test fixture
- class formation
- base board
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
This application discloses a kind of stringer class formation test fixture, belong to aircraft stringer class formation experiment field.Including first clamping plate (4), second clamping plate (5) and regulating base board (7), wherein, the stud (41 perpendicular to the mainboard face that first clamping plate (4) includes mainboard face with second clamping plate (5) and formed in side, 51), the mainboard face of two clamping plates is present and edge strip (2) thickness identical thickness difference under the stringer, when testpieces covering (3) is clamped by the larger clamping plate of mainboard face thickness and the regulating base board (7), gap is formed between the covering and another clamping plate, the gap can accommodate the lower edge strip (2) of the stringer.It is connected by middle clamp plate stud of the present invention with stringer web, preferably eliminates the influence that additional bending moment examines area's stress distribution to experiment.Drastically increase the validity and authenticity of test data.
Description
Technical field
The application belongs to aircraft stringer class formation experiment field, and in particular to a kind of stringer class formation test fixture.
Background technology
Fuselage stringer class formation is one of aircraft more important structure, and its destruction will directly affect the complete of aircraft
Property, therefore when doing stringer class formation fatigue test, therefore, to assure that examine load distribution in region basic with actual airplane in experiment
Unanimously, and to ensure that experiment clamping zone can not in test premature degradation.At present, fuselage stringer class formation test fixture, no
False additional stress caused by moment of flexure can be preferably avoided, causes experiment examination area's stress distribution and aircraft truth
It is inconsistent, and then there is the phenomenon of bare terminal end premature degradation, test data validity and authenticity are made a big impact.
The content of the invention
In order to solve the above problems, present applicant proposes a kind of stringer class formation test fixture, it can eliminate to stringer class
The untrue additional bending moment influence of structure, to improve fatigue test validity and authenticity.The stringer clamped by the fixture is main
Including web and upper and lower edge strip, wherein edge strip extends to certain side of web respectively from the two ends of web, forms " 2 " font knot
Structure, as shown in Fig. 2 in addition, the fixture is also held and mounted on the covering on lower edge strip.
The application stringer class formation test fixture mainly includes first clamping plate, second clamping plate and regulating base board, wherein, the
The stud perpendicular to the mainboard face that one clamping plate includes mainboard face with second clamping plate and formed in side, the regulation bottom
Plate is arranged on the first clamping plate and the second clamping plate deviates from the side of stud, and the mainboard face of two clamping plates is present and the length
Edge strip thickness identical thickness difference under purlin, when testpieces covering is clamped by the larger clamping plate of mainboard face thickness and the regulating base board
When, gap is formed between the covering and another clamping plate, the gap can accommodate the lower edge strip of the stringer.
Preferably, in addition to backing plate, it is arranged on remaining after the lower edge strip of the stringer is placed in the gap
In space.
In such scheme preferably, the first clamping plate and second clamping plate are set on the one side away from regulating base board
Have and be set to rounding transition at step, the step.
In such scheme preferably, on the direction that test fixture extends to the stringer center, the regulating base board
Length be less than the length of first clamping plate or second clamping plate.
In such scheme preferably, the first clamping plate is riveted with the covering, regulating base board.
In such scheme preferably, the second clamping plate is riveted with edge strip, covering and regulating base board under the stringer.
In such scheme preferably, the stud of the first clamping plate and second clamping plate is clamping the web of the stringer
Afterwards, fixed by rivet.
In such scheme preferably, the backing plate and covering, regulating base board and with the less clamping plate of mainboard face thickness
Riveting.
It is connected by the application middle clamp plate stud with stringer web, preferably eliminates additional bending moment and experiment examination area is cut
The influence of face stress distribution, makes load distribution basically identical with actual airplane；, can be with by adjusting base plate thickness in this application
Easily the load effect centre of form in experiment is adjusted, is easy to experiment to implement；Added by the multistage machine of progress to clamping plate, make to cut
Face load change is more gentle, improves clamping zone fatigue behaviour.Having for test data is drastically increased using this application
Effect property and authenticity.
Brief description of the drawings
Fig. 1 is the front view of a preferred embodiment of the application stringer class formation test fixture.
Fig. 2 is the left view of embodiment illustrated in fig. 1.
Fig. 3 is the test fixture and stringer connection diagram of the preferred embodiment of the application.
Wherein, 1 is web, and 2 be lower edge strip, and 3 be covering, and 4 be first clamping plate, and 5 be second clamping plate, and 6 be backing plate, and 7 be tune
Bottom plate is saved, 8 be rivet, and 41 be stud, and 51 be stud.
Embodiment
To make the purpose, technical scheme and advantage of the application implementation clearer, below in conjunction with the embodiment of the present application
Accompanying drawing, the technical scheme in the embodiment of the present application is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or the element with same or like function.Described embodiment is the application
A part of embodiment, rather than whole embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
In explaining the application, and it is not intended that limitation to the application.Based on the embodiment in the application, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of the application protection.Under
Embodiments herein is described in detail with reference to accompanying drawing for face.
In the description of the present application, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, is for only for ease of description the application and simplifies description, rather than indicate or imply signified dress
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the application is protected
The limitation of scope.
Present applicant proposes a kind of stringer class formation test fixture, its stringer clamped mainly includes web and upper and lower edge
Bar, wherein edge strip extend to certain side of web respectively from the two ends of web, form " 2 " font structure, as shown in Fig. 2 wherein,
Web 1 and lower edge strip 2 are clamped, meanwhile, fixture is also held and mounted on the covering 3 of the lower bottom of edge strip 2.
The application stringer class formation test fixture mainly includes first clamping plate 4, second clamping plate 5 and regulating base board 7, its
In, first clamping plate 4 and second clamping plate 5 include mainboard face and formed in side perpendicular to the mainboard face stud 41,
51, the regulating base board 7 is arranged on the side that two clamping plates deviate from stud, the mainboard faces of two clamping plates exist with the stringer
Edge strip thickness identical thickness difference, when testpieces covering 3 is clamped by the larger clamping plate of mainboard face thickness with the regulating base board 7
When, gap is formed between the covering 3 and another clamping plate, the gap can accommodate the lower edge strip 2 of the stringer.
With reference to Fig. 1, label 4 is first clamping plate, and 5 be second clamping plate, and two clamping plates are stretched in side (upper side in figure)
Go out stud, first clamping plate 4 includes stud 41, and second clamping plate 5 includes stud 51, two pieces of stud alignment, for clamping above-mentioned stringer
Web 1, with reference to Fig. 2 and Fig. 3.In Fig. 2 or Fig. 3,3 be covering, wherein, two clamping plates clamp the web 1 of stringer, two jointly
The mainboard face of block clamping plate clamps covering 3 and lower edge strip 2 jointly with regulating base board 7, so preferably eliminates additional bending moment to examination
The influence of examination area's stress distribution is tested, makes load distribution basically identical with actual airplane.
In the one side (bottom side in Fig. 1, Fig. 2) away from stud, first clamping plate 4 has different height from second clamping plate 5
Degree, forms thickness difference, with reference to Fig. 2, and the thickness of first clamping plate 4 is more than the thickness of second clamping plate 5, so that when the lower edge strip 2 of stringer
During positioned at the lower section of second clamping plate 5, there is identical level height with first clamping plate, afterwards, in first clamping plate 4 and lower edge strip 2
Lower section regulating base board 7 is installed and during covering 3, ensure that regulating base board 7 (actual contact is covering 3) is total to second clamping plate 5
With the lower edge strip 2 for clamping stringer.
In the present embodiment, in addition to backing plate 6, it is arranged on and is remained after the lower edge strip 2 of the stringer is placed in the gap
In remaining space.With reference to Fig. 2, the lower bolster limited width of stringer can be only filled between second clamping plate 5 and covering 3 are formed
A part for gap, and another part then needs to use the backing plate 6 of suitable thickness to fill.
In the present embodiment, the first clamping plate 4 and second clamping plate 5 are provided with platform on the one side away from regulating base board
Rounding transition is set at rank, the step.With reference to Fig. 1, transition shoulder is three layers, and one layer of the leftmost side is gripping section, is used for
Test fixture is clamped, and two sections of thickness that clamping plate extends to the right are tapered into, and uses rounding transition, many by being carried out to clamping plate
Level machine adds, and makes section load change more gentle, improves clamping zone fatigue behaviour.
In the present embodiment, on the direction that test fixture extends to the stringer center, the length of the regulating base board 7 is small
In first clamping plate 4 or the length of second clamping plate 5.With reference to Fig. 1, the length of regulating base board 7 is less than the length of second clamping plate 5, that is, schemes
Show the lower right-hand side of middle backing plate 6 without regulating base board, the design is, in order to avoid section load is mutated, to make to act at stringer section
Load change it is more gentle.
In the present embodiment, the test fixture also includes some rivets 8, and all fixed forms are to rivet, including described
First clamping plate 4 and covering 3, regulating base board 7 (are riveted to one by first clamping plate 4 and the riveting of the covering 3, regulating base board 7 jointly
Rise, similar description is equivalent below)；The second clamping plate 5 is riveted with edge strip 2, covering 3 and regulating base board 7 under the stringer；It is described
The stud of first clamping plate 4 and second clamping plate 5 is fixed after the web 1 of the stringer is clamped by rivet；And, work as institute
When stating test fixture including backing plate 6, the backing plate 6 and setting regulating base board 7 thereunder, covering 3 and it is disposed thereon
The less clamping plate of mainboard face thickness (second clamping plate 5 in Fig. 2) riveting of side.
It is further to note that in the application, can be easily in experiment by adjusting the thickness of regulating base board 7
The load effect centre of form is adjusted, and is easy to experiment to implement.Test load is transmitted by frictional force between fixture and chuck.Fatigue examination
Result is tested to show：This applies for the validity and authenticity that significantly improve test data.
It is connected by the application middle clamp plate stud with stringer web, preferably eliminates additional bending moment and experiment examination area is cut
The influence of face stress distribution, makes load distribution basically identical with actual airplane；, can be with by adjusting base plate thickness in this application
Easily the load effect centre of form in experiment is adjusted, is easy to experiment to implement；Added by the multistage machine of progress to clamping plate, make to cut
Face load change is more gentle, improves clamping zone fatigue behaviour.Having for test data is drastically increased using this application
Effect property and authenticity.
It is last it is to be noted that：Above example is only to the technical scheme for illustrating the application, rather than its limitations.To the greatest extent
The application is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, the essence of appropriate technical solution is departed from the essence of each embodiment technical scheme of the application
God and scope.
Claims (8)
1. a kind of stringer class formation test fixture, it is characterised in that：Mainly include first clamping plate (4), second clamping plate (5) and adjust
Bottom plate (7) is saved, wherein, first clamping plate (4) includes mainboard face with second clamping plate (5) and in side formation perpendicular to described
The stud (41,51) in mainboard face, the regulating base board (7) is arranged on the first clamping plate and the second clamping plate away from stud
Side, the mainboard faces of two clamping plates exist with edge strip (2) thickness identical thickness difference under the stringer, when testpieces covering (3)
When being clamped by the larger clamping plate of mainboard face thickness and the regulating base board (7), formed between the covering (3) and another clamping plate
Gap, the gap can accommodate the lower edge strip (2) of the stringer.
2. stringer class formation test fixture as claimed in claim 1, it is characterised in that：Also include backing plate (6), be arranged on and work as institute
The lower edge strip (2) for stating stringer is placed in after the gap in remaining space.
3. stringer class formation test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) and the second folder
Plate (5) is provided with step, the step on the one side away from regulating base board (7) and is set to rounding transition.
4. stringer class formation test fixture as claimed in claim 1, it is characterised in that：In test fixture to the stringer center
On the direction of extension, the length of the regulating base board (7) is less than the length of first clamping plate (4) or second clamping plate (5).
5. stringer class formation test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) is covered with described
Skin (3) and regulating base board (7) riveting.
6. stringer class formation test fixture as claimed in claim 1, it is characterised in that：The second clamping plate (5) and the length
Edge strip (2), covering (3) and regulating base board (7) riveting under purlin.
7. stringer class formation test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) and the second folder
The stud of plate (5) is fixed after the web (1) of the stringer is clamped by rivet.
8. stringer class formation test fixture as claimed in claim 2, it is characterised in that：The backing plate (6) and covering (3), tune
Save bottom plate (7) and riveted with the less clamping plate of mainboard face thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179060.8A CN107063852A (en) | 2017-03-23 | 2017-03-23 | A kind of stringer class formation test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179060.8A CN107063852A (en) | 2017-03-23 | 2017-03-23 | A kind of stringer class formation test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107063852A true CN107063852A (en) | 2017-08-18 |
Family
ID=59620585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710179060.8A Pending CN107063852A (en) | 2017-03-23 | 2017-03-23 | A kind of stringer class formation test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107063852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417236Y (en) * | 2009-06-04 | 2010-03-03 | 中国航空工业集团公司西安飞机设计研究所 | Clamping fixture for fatigue test of long beam tag end |
| CN103454145A (en) * | 2013-08-31 | 2013-12-18 | 西北工业大学 | Clamping tool for testing pressure loss performance of truss section bar |
| CN204422323U (en) * | 2014-11-28 | 2015-06-24 | 振石集团恒石纤维基业有限公司 | For the fixture of composite materials property testing apparatus |
| CN205643004U (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 | Ribbed wallboard shear test anchor clamps |
-
2017
- 2017-03-23 CN CN201710179060.8A patent/CN107063852A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201417236Y (en) * | 2009-06-04 | 2010-03-03 | 中国航空工业集团公司西安飞机设计研究所 | Clamping fixture for fatigue test of long beam tag end |
| CN103454145A (en) * | 2013-08-31 | 2013-12-18 | 西北工业大学 | Clamping tool for testing pressure loss performance of truss section bar |
| CN204422323U (en) * | 2014-11-28 | 2015-06-24 | 振石集团恒石纤维基业有限公司 | For the fixture of composite materials property testing apparatus |
| CN205643004U (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 | Ribbed wallboard shear test anchor clamps |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
| CN107860649B (en) * | 2017-11-03 | 2020-06-05 | 天津科技大学 | Single-lap riveting joint bending-prevention clamp and design method thereof |
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Application publication date: 20170818 |