CN114590393A - Structural damping integrated double-faced skin empennage structure - Google Patents
Structural damping integrated double-faced skin empennage structure Download PDFInfo
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- CN114590393A CN114590393A CN202210103662.6A CN202210103662A CN114590393A CN 114590393 A CN114590393 A CN 114590393A CN 202210103662 A CN202210103662 A CN 202210103662A CN 114590393 A CN114590393 A CN 114590393A
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- damping
- skin
- core body
- integrated double
- covering
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- 238000013016 damping Methods 0.000 title claims abstract description 112
- 239000000463 material Substances 0.000 claims abstract description 44
- 239000000945 filler Substances 0.000 claims abstract description 43
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 239000000805 composite resin Substances 0.000 claims abstract description 22
- 230000010354 integration Effects 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 239000002041 carbon nanotube Substances 0.000 claims description 11
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 229920005549 butyl rubber Polymers 0.000 claims description 3
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920001021 polysulfide Polymers 0.000 claims description 3
- 239000005077 polysulfide Substances 0.000 claims description 3
- 150000008117 polysulfides Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/26—Construction, shape, or attachment of separate skins, e.g. panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C2001/0054—Fuselage structures substantially made from particular materials
- B64C2001/0072—Fuselage structures substantially made from particular materials from composite materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to the technical field of aviation manufacturing, and particularly relates to a structure damping integrated double-faced skin empennage structure; two-sided covering fin structure of structural damping integration, its outer covering that includes the inner covering of fin and fin, its characterized in that: a plurality of spaces are formed between the structural reinforcing ribs and the inner skin and/or the outer skin, damping fillers are arranged in the spaces, and each damping filler comprises a core body prepared from a damping material and a damping resin composite material coated on the surface of the core body; according to the invention, the damping resin composite material for improving the rigidity of the core body is coated on the surface of the core body prepared from the damping material, so that the manufacturing of the tail wing structure of the double-faced skin with a complex structure is facilitated, the accessibility of the process is improved, the problems of complex process and high manufacturing difficulty in the prior art are solved, the manufacturing cost is reduced, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of aviation manufacturing, and particularly relates to a double-faced skin empennage structure integrating structural damping.
Background
Engineering structures are subject to not only static loads, but also to many structures which are often subjected to strong dynamic loads during use. For example, various spacecraft are often in a severe environment and are subjected to strong vibration and impact, so that the service life of a structure is shortened, instruments are out of order, a series of serious accidents are induced, and huge losses are caused to the lives and properties of the nation and people. Relevant statistics show that, in the event of a major accident in an aircraft, 40% are associated with vibrations. How to avoid the structure from generating severe vibration is an important issue to reduce the response amplitude of the structure as much as possible and improve the vibration suppression capability of the structure. Damping vibration reduction, namely, improving the damping of a structure, increasing the kinetic energy loss of the structure in vibration, improving the vibration resistance and dynamic stability of the structure in a dynamic environment, and reducing the vibration transmission capability of the structure, is widely concerned by researchers.
The existing empennage structure is made of carbon fiber materials, but the requirement of shock absorption is found in practical use, and how to add damping materials into the empennage structure of the existing carbon fiber double-faced skin becomes a problem, a plurality of cavities exist in the empennage, and after pure functional materials are filled into the cavities, a complex structure cannot be processed at one time, so that the production difficulty is increased, and the process accessibility is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention designs a structural damping integrated double-faced skin empennage structure.
The technical scheme of the invention is as follows:
two-sided covering fin structure of structural damping integration, its outer covering that includes the interior covering of fin and fin, its characterized in that: the damping composite material is characterized in that a structural reinforcing rib is arranged between the outer skin and the inner skin, a plurality of spaces are formed between the structural reinforcing rib and the inner skin and/or the outer skin, damping fillers are arranged in the spaces, and each damping filler comprises a core body prepared from a damping material and a damping resin composite material coated on the surface of the core body.
Furthermore, the damping resin composite material comprises a carbon fiber matrix damping resin prepreg, and the damping resin comprises resin and a light damping material mixed in the resin.
Furthermore, the light damping material is any one of carbon nanotube foam, graphene foam, carbon foam, functionalized carbon nanotubes, nanofluid and nano-scale glass beads.
Furthermore, the functionalized carbon nanotube is a carboxylated or hydroxylated carbon nanotube.
Furthermore, the core body is made of any one of butyl rubber, acrylate, polysulfide, butyronitrile, silicon rubber, polyurethane, polyvinyl chloride and epoxy resin.
Furthermore, the structural reinforcing ribs are corrugated reinforcing ribs connected between the outer skin and the inner skin.
Furthermore, the structure reinforcing ribs are of a square lattice type grid structure, the upper end and the lower end of the square lattice type grid structure are respectively connected with the inner skin and the outer skin, and the damping filler is arranged in the square lattice type grid structure.
Furthermore, the lattice type grid structure is coated on the surface of the damping filler, an embedding groove is formed in a surface upper structure reinforcing layer of the damping filler, which is connected with the inner skin and the outer skin, and embedding blocks matched with the embedding groove are formed on the inner skin and the outer skin.
In conclusion, the invention has the following beneficial effects:
1. according to the invention, the damping resin composite material for improving the rigidity of the core body is coated on the surface of the core body prepared from the damping material, so that the manufacturing of the empennage structure of the double-sided skin with a complex structure is facilitated, the accessibility of the process is improved, the problems of complex process and high manufacturing difficulty in the prior art are solved, the manufacturing cost is reduced, and the production efficiency is improved.
2. The invention further improves the structure of the damping filler, the surface of the damping filler is further coated with a layer of structure reinforcing layer, the structure reinforcing layer improves the connection reliability between the damping filler and the inner and outer skins, furthermore, an embedding groove is formed on the structure reinforcing layer, embedding blocks matched with the embedding groove are formed on the inner and outer skins, the shearing resistance between the damping filler and the inner and outer skins is improved by the embedding groove and the embedding block structure, and the structure stability is better.
3. According to the invention, the surface of the core body is coated with the damping resin composite material, the damping resin composite material forms the covering layer with certain rigidity and damping capacity, the gradual change of the rigidity is formed at the joint of the damping filler and the structural reinforcing ribs as well as the inner and outer skins, and the risk of debonding and cracking of the damping filler and the structural reinforcing ribs as well as the inner and outer skins can be reduced when the external force is applied.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
in the figure, 1 is an inner skin, 2 is an outer skin, 3 is a structural reinforcing rib, 30 is a space, 4 is damping filler, 40 is a core body, 41 is damping resin composite material, 31 is a caulking groove, and 32 is an insert block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Example one
Referring to fig. 1, the two-sided skin empennage structure of structural damping integration, it includes the outer skin 2 of the interior skin 1 of fin and fin, its characterized in that: the outer skin and the inner skin are provided with structural reinforcing ribs 3, a plurality of spaces 30 are formed between the structural reinforcing ribs 3 and the inner skin 1 and/or the outer skin 2, damping fillers 4 are arranged in the spaces 30, and the damping fillers 4 comprise cores 40 prepared from damping materials and damping resin composite materials 41 coated on the surfaces of the cores.
The structural reinforcing ribs 3 are corrugated reinforcing ribs connected between the outer skin and the inner skin, damping fillers are prefabricated according to the shapes of the corrugated reinforcing ribs, and finally the structural reinforcing ribs, the damping fillers, the inner skin and the outer skin are combined and molded to obtain a complete structural damping integrated double-sided skin empennage structure.
Example two
Referring to fig. 2, the two-sided skin empennage structure of structural damping integration, it includes the outer skin 2 of the interior skin 1 of fin and fin, its characterized in that: the outer skin and the inner skin are provided with structural reinforcing ribs 3, a plurality of spaces 30 are formed between the structural reinforcing ribs 3 and the inner skin 1 and/or the outer skin 2, damping fillers 4 are arranged in the spaces 30, and the damping fillers 4 comprise cores 40 prepared from damping materials and damping resin composite materials 41 coated on the surfaces of the cores.
The structural reinforcing ribs 3 in the embodiment are of a lattice type grid structure, the upper end and the lower end of the lattice type grid structure are respectively connected with the inner skin and the outer skin, and the damping filler is arranged in the lattice type grid structure.
The damping filler comprises a core body and a coated damping resin composite material, wherein the damping resin composite material has certain rigidity after being pre-cured, and can keep the shape of the core body mainly made of the damping material, so that the shape of the damping filler is stable; for the reliability of being connected of further promotion square lattice type grid structure and damping filler and interior outer covering, can adopt the physics connected mode to consolidate, for example set up the screw etc. of connecting square lattice type grid structure, damping filler and interior outer covering, the advantage of this embodiment still lies in that each spare part can be prefabricated alone, produces in step, has promoted production efficiency greatly.
EXAMPLE III
Referring to fig. 3, the two-sided skin empennage structure of structural damping integration, it includes the outer skin 2 of the interior skin 1 of fin and fin, its characterized in that: the outer skin and the inner skin are provided with structural reinforcing ribs 3, a plurality of spaces 30 are formed between the structural reinforcing ribs 3 and the inner skin 1 and/or the outer skin 2, damping fillers 4 are arranged in the spaces 30, and the damping fillers 4 comprise cores 40 prepared from damping materials and damping resin composite materials 41 coated on the surfaces of the cores.
The structural reinforcing ribs 3 in the embodiment are of a square grid structure, the upper end and the lower end of the square grid structure are respectively connected with the inner skin and the outer skin, the damping filler is arranged in the square grid structure,
further, in this embodiment the cladding of square lattice type grid structure 3 be on the surface of damping filler, and the structural reinforcement layer is formed with an caulking groove 31 on the surface that damping filler is connected with interior covering and outer covering, be formed with on interior covering 1 and the outer covering 2 with caulking groove complex abaculus 32, receive the influence of shearing force easily between interior outer covering and the square lattice type grid structure, the phenomenon of layering appears easily, the caulking groove on the square lattice type grid structure, can form a cooperation in the abaculus of caulking groove at the laying process of interior outer covering, make there is a connection fulcrum that shears between square lattice type grid structure and the interior outer covering, the damping filler has been promoted, the ability that shears between square lattice type grid structure and the interior outer covering, the structural stability is better.
The damping resin composite material 41 in the above embodiment includes a prepreg of damping resin of a carbon fiber matrix, the damping resin includes resin and a light damping material mixed in the resin, the resin may be high-temperature epoxy, bismaleimide resin, or the like, further, the light damping material is any one of carbon nanotube foam, graphene foam, carbon foam, functionalized carbon nanotube, nanofluid, and nano-glass beads, the light damping material is mixed in the resin and made into a damping resin composite material with carbon fibers, and the damping resin composite material is coated on the surface of the core body, so that on one hand, the light damping material has a certain rigidity and can maintain the shape of the damping filler, and on the other hand, the light damping material also has a certain damping capacity, and the damping capacity of the core body can be better exerted.
Furthermore, the functionalized carbon nanotube is a carboxylated or hydroxylated carbon nanotube, and when the functionalized carbon nanotube is mixed into resin, functional groups on the surface of the carbon nanotube react and combine with the resin, so that the combining capacity of the light damping material and the resin is improved, and the damping resin composite material is more stable and reliable.
Furthermore, the core body is made of any one of butyl rubber, acrylate, polysulfide, butyronitrile, silicon rubber, polyurethane, polyvinyl chloride and epoxy resin.
In conclusion, the invention has the following beneficial effects:
1. according to the invention, the damping resin composite material for improving the rigidity of the core body is coated on the surface of the core body prepared from the damping material, so that the manufacturing of the empennage structure of the double-sided skin with a complex structure is facilitated, the accessibility of the process is improved, the problems of complex process and high manufacturing difficulty in the prior art are solved, the manufacturing cost is reduced, and the production efficiency is improved.
2. The invention further improves the structure of the damping filler, the surface of the damping filler is further coated with a structural reinforcing layer, the structural reinforcing layer improves the connection reliability between the damping filler and the inner skin and the outer skin, furthermore, an embedding groove is formed on the structural reinforcing layer, embedding blocks matched with the embedding groove are formed on the inner skin and the outer skin, the shearing resistance between the damping filler and the inner skin and the outer skin is improved by the embedding groove and the embedding block structure, and the structural stability is better.
3. According to the invention, the surface of the core body is coated with the damping resin composite material, the damping resin composite material forms the covering layer with certain rigidity and damping capacity, the gradual change of the rigidity is formed at the joint of the damping filler and the structural reinforcing ribs as well as the inner and outer skins, and the risk of debonding and cracking of the damping filler and the structural reinforcing ribs as well as the inner and outer skins can be reduced when the external force is applied.
Claims (8)
1. Two-sided covering fin structure of structural damping integration, its outer covering that includes the inner covering of fin and fin, its characterized in that: the damping composite material is characterized in that a structural reinforcing rib is arranged between the outer skin and the inner skin, a plurality of spaces are formed between the structural reinforcing rib and the inner skin and/or the outer skin, damping fillers are arranged in the spaces, and each damping filler comprises a core body prepared from a damping material and a damping resin composite material coated on the surface of the core body.
2. The structurally damped integrated double-skin empennage structure of claim 1, wherein: the damping resin composite material comprises a prepreg of damping resin of a carbon fiber matrix, and the damping resin comprises resin and a light damping material mixed in the resin.
3. The structurally damped integrated double-skin empennage structure of claim 2, wherein: the light damping material is any one of carbon nanotube foam, graphene foam, carbon foam, functionalized carbon nanotubes, nanofluid and nano-scale glass beads.
4. The structurally damped integrated double skin empennage structure of claim 3, wherein: the functionalized carbon nano tube is a carboxylated or hydroxylated carbon nano tube.
5. The structurally damped integrated double-sided skin tail structure of claim 1, wherein: the core body is made of any one of butyl rubber, acrylate, polysulfide, butyronitrile, silicon rubber, polyurethane, polyvinyl chloride and epoxy resin.
6. The structurally damped integrated double-skin empennage structure of claim 1, wherein: the structural reinforcing ribs are corrugated reinforcing ribs connected between the outer skin and the inner skin.
7. The structurally damped integrated double-skin empennage structure of claim 1, wherein: the structure strengthening rib be square lattice type grid structure, square lattice type grid structure's upper and lower both ends are connected in interior covering and outer covering respectively, damping filler set up in square lattice type grid structure.
8. The structurally damped integrated double-sided skin tail structure of claim 7, wherein: the lattice type grid structure is coated on the surface of the damping filler, an embedding groove is formed in a surface upper structure reinforcing layer of the damping filler, which is connected with the inner skin and the outer skin, and embedding blocks matched with the embedding groove are formed on the inner skin and the outer skin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210103662.6A CN114590393B (en) | 2022-01-28 | Structure damping integrated double-sided skin tail wing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210103662.6A CN114590393B (en) | 2022-01-28 | Structure damping integrated double-sided skin tail wing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114590393A true CN114590393A (en) | 2022-06-07 |
| CN114590393B CN114590393B (en) | 2024-07-02 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314935A (en) * | 2008-07-17 | 2008-12-03 | 南京工业大学 | Composite material bridge deck |
| CN102416713A (en) * | 2011-08-16 | 2012-04-18 | 西安交通大学 | Lattice-gradient foamed aluminum composite material and preparation method thereof |
| CN104015377A (en) * | 2014-06-11 | 2014-09-03 | 青岛理工大学 | Making process of multilayer sandwiched precision instrument board of high-damping and high-rigidity composite material |
| US20150151524A1 (en) * | 2012-12-19 | 2015-06-04 | Embraer S.A. | Methods for fabricating stabilized honeycomb core composite laminate structures |
| CN110481059A (en) * | 2019-09-24 | 2019-11-22 | 航天特种材料及工艺技术研究所 | A kind of composite material foam sandwich construction and its forming method |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101314935A (en) * | 2008-07-17 | 2008-12-03 | 南京工业大学 | Composite material bridge deck |
| CN102416713A (en) * | 2011-08-16 | 2012-04-18 | 西安交通大学 | Lattice-gradient foamed aluminum composite material and preparation method thereof |
| US20150151524A1 (en) * | 2012-12-19 | 2015-06-04 | Embraer S.A. | Methods for fabricating stabilized honeycomb core composite laminate structures |
| CN104015377A (en) * | 2014-06-11 | 2014-09-03 | 青岛理工大学 | Making process of multilayer sandwiched precision instrument board of high-damping and high-rigidity composite material |
| CN110481059A (en) * | 2019-09-24 | 2019-11-22 | 航天特种材料及工艺技术研究所 | A kind of composite material foam sandwich construction and its forming method |
Non-Patent Citations (1)
| Title |
|---|
| 赵云峰: "结构/阻尼一体化复合材料技术及其应用研究进展", 《材料工程》, vol. 2012, no. 11, 31 December 2012 (2012-12-31), pages 86 - 91 * |
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