CN103342164B - The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry - Google Patents
The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry Download PDFInfo
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- CN103342164B CN103342164B CN201310274347.0A CN201310274347A CN103342164B CN 103342164 B CN103342164 B CN 103342164B CN 201310274347 A CN201310274347 A CN 201310274347A CN 103342164 B CN103342164 B CN 103342164B
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- covering
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- fibre reinforcement
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Abstract
The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry, comprise flexible covering matrix, not and also comprise fibre reinforcement, fibre reinforcement becomes snakelike arrangement in parallel in flexible covering matrix, and the arcuation rotating part of its snakelike arrangement in parallel and two terminations lay respectively at flexible covering matrix outer.Pretension is carried out in the direction that this covering is being parallel to fiber, then can improve the load-carrying properties of this covering; Fibre reinforcement forms grid, then the breach of collective can be restricted to and the large area of covering can not be caused in grid to lose efficacy; Be easy to be connected with body, improve comfort feature and the reliability of covering installation.
Description
Technical field
The present invention relates to the deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry.
Background technology
In order to make aircraft adapt to different aerial missions, propose in the world by changing the area of lifting body and shape to optimize the morphing aircraft concept of airworthiness for different state of flights.Its covering needs to have flexibility with applicable variant, and possesses load-carrying capacity to keep the stable of aircraft profile under aerodynamic loading.Existing flexible covering often meets the demand of variant, but load-carrying capacity is poor.
For fiber reinforced composite flexible covering, in order to improve its load-carrying properties, the direction being parallel to fibre reinforcement is needed to carry out pretension, its load-carrying properties and predetermincd tension positive correlation.Therefore, the connection of covering and body is very important.And existing covering often needs to be connected by modes such as press strips, its complex process, structural weight are large.
In addition, the breach of flexible covering matrix is very easily expanded, and the appearance of place's breach may cause the inefficacy of whole covering.
Summary of the invention
The object of the invention is to the load-carrying properties improving flexible covering, the deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry is provided.
The technology used in the present invention is as follows:
The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry, comprise flexible covering matrix, be characterized in: also comprise fibre reinforcement, fibre reinforcement becomes serpentine arrangement in flexible covering matrix, and the arcuation rotating part of its serpentine arrangement and two terminations lay respectively at flexible covering matrix outer.
The present invention also has following feature:
When above-described fibre reinforcement is multiple, adjacent fibre reinforcement becomes the orthogonal arrangement between two of upper and lower layered laminate, forms cellular structure.
Tool of the present invention has the following advantages:
1, carry out pretension in the direction being parallel to fiber, then can improve the load-carrying properties of this covering;
2, fibre reinforcement forms grid, then the breach of collective can be restricted to and the large area of covering can not be caused in grid to lose efficacy;
3, be easy to be connected with body, improve comfort feature and the reliability of covering installation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Detailed description of the invention
Embodiment 1
The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry, comprise flexible covering matrix 2, this covering also comprises fibre reinforcement 1, fibre reinforcement 1 becomes serpentine arrangement in flexible covering matrix 2, and arcuation rotating part 3 and two terminations 4 of its serpentine arrangement lay respectively at flexible covering matrix outer.
Embodiment 2
According to one embodiment of present invention, adopt one group of Kafra fiber reinforcement, when carrying out the pretension perpendicular to machine direction, after stretching covering, its edge press strip is fixed on body, when carrying out the pretension being parallel to machine direction, cyclic structure to be articulated on the pre-tightening apparatus with hook and to load to realize pretension to pre-tightening apparatus.This covering can carry out shear and the unilateral stretching variant perpendicular to fibre reinforcement;
Embodiment 3
According to one embodiment of present invention, adopt one group of Kafra fiber reinforcement, when carrying out the pretension being parallel to machine direction, body two side skin is covered relevant position simultaneously, to the end of a thread of some tension be kept repeatedly alternately through the cyclic structure of two side skins afterwards, carry out the connection of suture type, the predetermincd tension of covering can be controlled by the tension force controlling the end of a thread.This covering can carry out shear and the unilateral stretching variant perpendicular to fibre reinforcement;
Embodiment 4
According to one embodiment of present invention, fibre reinforcement is one group of snakelike arrangement and is paved with the carbon fiber bundle of whole covering area, does not carry out other pretensions, loose cover edges is sticked with glue agent and is fixed on body after carrying out being parallel to the pretension of machine direction.This covering can carry out shear and the unilateral stretching variant perpendicular to fibre reinforcement;
Embodiment 5
According to one embodiment of present invention, fibre reinforcement is two groups of orthogonal rigid fibers of the part in covering, during installation, covering is parallel to the pretension of two groups of fibers.This covering can carry out shear;
Embodiment 6
According to one embodiment of present invention, adopt one group of rigid fiber reinforcement and one group of elastic fibre reinforcement, the part of two groups of fibre reinforcements in covering is mutually vertical, and keeps good interface cohesion with covering matrix, during installation, covering is parallel to the pretension of two groups of fibers.This covering can carry out shear and the unilateral stretching variant perpendicular to rigid fiber reinforcement, and the breach of matrix is restricted in two groups of fibrous minimum grids and not easily causes covering large area to lose efficacy.
Embodiment 7
The preparation method of the deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry:
1) prepare
First pouring into a mould one deck silaatic, the consistency and elasticity modulus of covering matrix can be controlled by changing silaatic proportioning;
By the silastic surface that a branch of Kafra fiber is being poured into a mould with snakelike continuous laying, make adjacent fiber Shu Pinghang and equidistant, and form some loop configuration and two terminations at two ends;
One deck silaatic poured into a mould again by the material of oneself laying fiber;
By a branch of elastic fibre along the direction perpendicular to Kafra fiber, be laid on the silastic surface poured into a mould in the mode identical with Kafra fiber;
One deck silaatic poured into a mould again by the material laying fiber;
Described composite material skin is formed after silaatic solidification.
2) installation and pretension
During installation, Kafra fiber is made to be in the direction not having normal strain in variant process.
The pretension carrying out being parallel to Kafra fiber direction can improve the load-carrying properties of covering.Pretension has following 2 kinds of modes:
2.1) loop configuration is fixed on the dependency structure of body, if cladding hook; The relevant apparatus on body is adopted to carry out pretension afterwards;
2.2) termination of body one side skin is replaced the cyclic structure through offside and this side skin, be fixed and pretension with suture way, predetermincd tension can be controlled by the tension force of termination.
For the covering carrying out shear variant, need to carry out the pretension being parallel to elastic fibre direction.Increase its pretension deformation quantity or improve the gauffer of skin thickness covering when variant deflection can be prevented larger.
Claims (1)
1. be convenient to the deformation skin of installing and the compound material flexible of pretension can carry for one kind, comprise flexible covering matrix and fibre reinforcement, it is characterized in that, fibre reinforcement becomes snakelike arrangement in parallel in flexible covering matrix, and the arcuation rotating part of its snakelike arrangement in parallel and two terminations lay respectively at flexible covering matrix outer; When described fibre reinforcement is multiple, adjacent fibre reinforcement becomes the orthogonal arrangement between two of upper and lower layered laminate, forms cellular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274347.0A CN103342164B (en) | 2013-06-25 | 2013-06-25 | The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274347.0A CN103342164B (en) | 2013-06-25 | 2013-06-25 | The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103342164A CN103342164A (en) | 2013-10-09 |
| CN103342164B true CN103342164B (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310274347.0A Active CN103342164B (en) | 2013-06-25 | 2013-06-25 | The deformation skin that a kind of compound material flexible being convenient to installation and pretension can carry |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401497A (en) * | 2014-11-19 | 2015-03-11 | 中国航空工业集团公司沈阳飞机设计研究所 | Flexible envelope for self-adaption swell air inlet channel |
| CN105864332B (en) * | 2016-05-16 | 2018-05-08 | 南京航空航天大学 | A kind of metal spring for flexible covering |
| CN111674541B (en) * | 2020-05-25 | 2023-04-18 | 哈尔滨工业大学 | Flexible composite skin, manufacturing method thereof and tool structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950200A (en) * | 2004-02-10 | 2007-04-18 | 波音公司 | Aluminum-fiber laminate |
| CN101879941A (en) * | 2010-07-27 | 2010-11-10 | 哈尔滨工业大学 | Variable-rate wing covering |
| CN102615868A (en) * | 2012-03-29 | 2012-08-01 | 哈尔滨工业大学 | Network cable skin strength-bearing material |
| CN102642611A (en) * | 2012-04-24 | 2012-08-22 | 哈尔滨工业大学 | Actively deformed stressed-skin structure based on pneumatic muscles |
| US20130266765A1 (en) * | 2010-10-07 | 2013-10-10 | Airbus Operations Gmbh | Structural component, aircraft or spacecraft, and method |
-
2013
- 2013-06-25 CN CN201310274347.0A patent/CN103342164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950200A (en) * | 2004-02-10 | 2007-04-18 | 波音公司 | Aluminum-fiber laminate |
| CN101879941A (en) * | 2010-07-27 | 2010-11-10 | 哈尔滨工业大学 | Variable-rate wing covering |
| US20130266765A1 (en) * | 2010-10-07 | 2013-10-10 | Airbus Operations Gmbh | Structural component, aircraft or spacecraft, and method |
| CN102615868A (en) * | 2012-03-29 | 2012-08-01 | 哈尔滨工业大学 | Network cable skin strength-bearing material |
| CN102642611A (en) * | 2012-04-24 | 2012-08-22 | 哈尔滨工业大学 | Actively deformed stressed-skin structure based on pneumatic muscles |
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| Publication number | Publication date |
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| CN103342164A (en) | 2013-10-09 |
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