CN212021913U - Wave-shaped lattice web reinforced composite material sandwich structure - Google Patents
Wave-shaped lattice web reinforced composite material sandwich structure Download PDFInfo
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- CN212021913U CN212021913U CN202020285277.4U CN202020285277U CN212021913U CN 212021913 U CN212021913 U CN 212021913U CN 202020285277 U CN202020285277 U CN 202020285277U CN 212021913 U CN212021913 U CN 212021913U
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- wave
- sandwich structure
- lattice web
- fiber cloth
- core material
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- 239000011208 reinforced composite material Substances 0.000 title description 11
- 239000011162 core material Substances 0.000 claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 47
- 239000004744 fabric Substances 0.000 claims abstract description 33
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000006260 foam Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 241000264877 Hippospongia communis Species 0.000 description 3
- 240000007182 Ochroma pyramidale Species 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 229920006305 unsaturated polyester Polymers 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- 244000055346 Paulownia Species 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000009755 vacuum infusion Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001061260 Emmelichthys struhsakeri Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a wave-shaped lattice web reinforced composite sandwich structure, which is vertically cut along the thickness direction of a core material according to a wave shape, the cut core material is wrapped with fiber cloth, and the fiber cloth and resin are solidified to form a wave-shaped lattice web; and laying fiber cloth on the core material up and down, and curing the fiber cloth and resin to form the fiber panel. The utility model discloses the great structure of bearing capacity is generally applied to, if: bridge panels, building panels, road panels, impact panels, and the like. The utility model discloses wave mode lattice web reinforcing composite sandwich structure compares with other products, and its biggest characteristics are wave mode lattice web can obviously reduce the elasticity sudden change of sandwich structure bearing capacity, make composite sandwich structure's whole atress performance obtain obvious improvement.
Description
Technical Field
The utility model relates to a wave mode lattice web reinforcing combined material sandwich structure roof beam, board, shell structure, it is the great structure of field load such as building, bridge, anticollision of generally being applied to, if: bridge deck, road deck, wall deck, floor deck, impact panel, and the like.
Background
The composite sandwich structure consists of three parts including outermost panel, middle core and lattice web connecting the core and the panel. The outermost panel mainly bears the positive stress caused by bending deformation and is made of high-strength and high-modulus materials such as laminated carbon fiber or glass fiber cloth; the core material of the middle layer provides enough section inertia moment for the sandwich structure, mainly bears shear stress, and is made of materials such as honeycomb, foam, balsa wood and the like. Between the face sheet and the core material is a lattice web, and the two are bonded together by a resin, and an unsaturated polyester, a vinyl resin, an epoxy resin, a phenol resin, or the like is generally used.
The composite material sandwich structure not only fully utilizes the advantages of high strength and light weight of fiber materials, but also skillfully utilizes the section inertia moment obtained by the light core material to achieve ideal structural performance (such as strength, rigidity, energy absorption performance and the like), and has the incomparable characteristics of other materials such as high specific strength, high specific rigidity, strong designability and the like and the development trend of being suitable for the characteristics of light weight, high speed, safety, fatigue resistance, corrosion resistance, invisibility and the like, the application field of the composite material sandwich structure is more and more extensive, and the composite material sandwich structure can relate to the fields of military facilities, national defense engineering, vehicles, ships, buildings, bridges and the like; for example, composite sandwich structures are adopted in developed countries to manufacture ship components, carriages, containers, material-carrying tank cars, chemical storage tanks and the like of trains and large buses, and the composite sandwich structures are even used for lunar landing vehicles of the U.S. space navigation bureau rover; in the field of bridge construction, the composite material can be used for roof boards, building templates, wall partition boards, bridge decks, airport temporary backing boards, portable boat bridges and the like. Therefore, the composite material sandwich structure is a material and a structural form with wide development prospect.
In China, most of composite sandwich structures take honeycombs as core materials, but the contact area between a panel and the core materials of the honeycomb sandwich structures is small, so that the bonding performance of the sandwich structures is relatively weak. In addition, China also has a composite sandwich structure taking polyurethane and other foams as core materials, but because the compression resistance and the shear resistance of the foam are lower, the tensile resistance of the fiber panel cannot be fully utilized, so that the sandwich structure cannot be widely applied.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the elastic bearing capacity of present lattice web reinforcing composite sandwich component descends suddenly, and the short not enough of elasticity compression stroke, provides a novel wave mode lattice web reinforcing composite sandwich structure, can show the destruction mode that improves composite sandwich structure, reduces the elasticity sudden change of sandwich structure bearing capacity, increases elasticity compression stroke, reduces sandwich structure's fragility.
The utility model adopts the technical scheme as follows: a sandwich structure of a wave-shaped lattice web reinforced composite material comprises a core material, a wave-shaped lattice web and a fiber panel layer;
the sandwich structure is a multilayer structure formed by stacking a plurality of core materials, each core material is subjected to wave-shaped cutting in the thickness direction, fiber cloth is filled in the cutting position, resin is introduced to form a wave-shaped lattice web, the upper surface and the lower surface of each core material are wrapped with the fiber cloth and are cured with the resin to form a fiber panel layer, and the fiber cloth is one or more layers;
and adjacent core materials of the sandwich structure are vertically cut along the chord in the same direction or reversely along the chord, and the formed wave-shaped lattice web plates are arranged in a unidirectional or bidirectional manner in the plane direction of the core materials.
The amplitude, the period and the arrangement mode of the wave-shaped lattice web plate are arbitrary, the thicknesses of the upper surface and the lower surface of the core material of the fiber panel can be consistent or inconsistent, and the laying direction and the number of the layers of the fiber cloth layer can be flexibly adjusted according to requirements.
Preferably, the core material is foam, balsa wood or any other material, and comprises: polyurethane foam, polyvinyl chloride foam, carbon foam, Balsa wood, paulownia wood, fir wood, oak, or plywood.
Preferably, the fiber panel layer is made of fiber material, and comprises: carbon, glass, aramid or hybrid fiber cloth, either monoaxial or biaxial or multiaxial.
Preferably, the resin comprises: unsaturated polyester, vinyl, epoxy or phenolic resins.
The preparation method of the wave-shaped lattice web reinforced composite material sandwich structure comprises the following steps:
a. cutting the core material along the thickness direction of the core material according to a waveform, wherein the cutting positions, the sizes and the number can be arranged according to the stress requirement;
b. the cut core material can be processed into the shapes of beams, plates, shells and the like according to the requirement of a sandwich structure;
c. one or more layers of fiber cloth are filled in the cut positions, and then the one or more layers of fiber cloth are laid on the upper and lower surfaces of the core material.
d. Resin is filled into a vacuum bag or a mould through the processes of a vacuum bag forming process, a vacuum infusion forming process and the like;
e. and after the resin is cured and molded, taking out the fiber cloth, filling the cut positions of the fiber cloth and the resin, curing the fiber cloth and the resin to form the corrugated lattice web, and curing the fiber cloth and the resin to form the fiber panel layer. The sandwich structure of the wave-shaped lattice web reinforced composite material, which has the advantages of obviously improved structural bearing capacity, obviously reduced sudden change of elastic bearing capacity and obviously improved failure mode, can be obtained by the method.
Has the advantages that: the utility model discloses wave mode lattice web reinforcing combined material sandwich structure compares with other products, and its biggest characteristics are that the wave mode lattice web along core thickness direction not only can obviously improve sandwich structure's bearing capacity, the anti ability of peeling off of panel and core, can effectively reduce the elasticity sudden change of sandwich structure bearing capacity moreover, improve its failure mode, reduce sandwich structure's fragility.
Drawings
Fig. 1 is a first schematic view of an embodiment 1 of a corrugated lattice web reinforced composite material.
Fig. 2 is a schematic view of a second embodiment 1 of the corrugated lattice web reinforced composite material.
Fig. 3 is a schematic view of an embodiment 2 of a corrugated lattice web reinforced composite material.
In the drawings: 1 is a core material; 2 is a spatial lattice web; 3 is a fiber panel layer, t1Is the thickness of the foam core, t2The thickness of the upper and lower panels.
The wave lattice adopts sine function
l is the length of the wave-shaped lattice, which is composed of n wave-shaped bodies, l ═ nl1，t3Is the thickness of the corrugated lattice.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments:
example 1
As shown in fig. 1 and fig. 2, a sandwich structure of a wave-shaped lattice web reinforced composite material comprises a core material 1, wave-shaped lattice webs 2 and fiber panel layers 3;
the sandwich structure is a double-layer structure formed by overlapping two core materials 1, wherein each core material 1 is subjected to wave-shaped cutting in the thickness direction, the adjacent core materials 1 are vertically cut along the chord in the same direction, fiber cloth is filled in the cut positions, resin is introduced to form a wave-shaped lattice web 2, the upper surface and the lower surface of each core material 1 are wrapped with the fiber cloth and are cured with the resin to form a fiber panel layer 3, and the fiber cloth is a layer.
The core material 1 is polyurethane foam, the fiber panel layer 3 is uniaxial carbon fiber cloth, and the resin is unsaturated polyester.
The preparation method of the wave-shaped lattice web reinforced composite material sandwich structure comprises the following steps:
a. cutting the core material along the thickness direction of the core material according to a waveform, wherein the cutting positions, the sizes and the number can be arranged according to the stress requirement;
b. the cut core material can be processed into the shapes of beams, plates, shells and the like according to the requirement of a sandwich structure;
c. one or more layers of fiber cloth are filled in the cut positions, and then the one or more layers of fiber cloth are laid on the upper and lower surfaces of the core material.
d. Resin is filled into a vacuum bag or a mould through the processes of a vacuum bag forming process, a vacuum infusion forming process and the like;
e. and after the resin is cured and molded, taking out the fiber cloth, filling the cut positions of the fiber cloth and the resin, curing the fiber cloth and the resin to form the corrugated lattice web, and curing the fiber cloth and the resin to form the fiber panel layer. The sandwich structure of the wave-shaped lattice web reinforced composite material, which has the advantages of obviously improved structural bearing capacity, obviously reduced sudden change of elastic bearing capacity and obviously improved failure mode, can be obtained by the method.
Example 2
As shown in fig. 3, a wave-shaped lattice web reinforced composite sandwich structure comprises a core material 1, wave-shaped lattice webs 2 and a fiber panel layer 3;
the sandwich structure is a three-layer structure formed by stacking three core materials 1, wherein each core material 1 is subjected to wave-shaped cutting in the thickness direction, adjacent core materials 1 are vertically cut along the chord direction, fiber cloth is filled in the cut positions and resin is introduced to form a wave-shaped lattice web 2, the upper surface and the lower surface of each core material 1 are wrapped with the fiber cloth and are cured with the resin to form a fiber panel layer 3, and the fiber cloth is multi-layer.
The core material 1 is paulownia wood, the fiber panel layer 3 is glass fiber cloth, and the resin comprises vinyl resin.
The embodiments of the present invention are described in detail with reference to the drawings, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art and are intended to be within the scope of the present principles and the spirit of the invention.
Claims (1)
1. A wave mode lattice web reinforcing composite material sandwich structure which characterized in that: comprises a core material, a wave-shaped lattice web and a fiber panel layer;
the sandwich structure is a multilayer structure formed by stacking a plurality of core materials, each core material is subjected to wave-shaped cutting in the thickness direction, fiber cloth is filled in the cutting position, resin is introduced to form a wave-shaped lattice web, the upper surface and the lower surface of each core material are wrapped with the fiber cloth and are cured with the resin to form a fiber panel layer, and the fiber cloth is one or more layers;
and adjacent core materials of the sandwich structure are vertically cut along the chord in the same direction or reversely along the chord, and the formed wave-shaped lattice web plates are arranged in a unidirectional or bidirectional manner in the plane direction of the core materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285277.4U CN212021913U (en) | 2020-03-10 | 2020-03-10 | Wave-shaped lattice web reinforced composite material sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285277.4U CN212021913U (en) | 2020-03-10 | 2020-03-10 | Wave-shaped lattice web reinforced composite material sandwich structure |
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| Publication Number | Publication Date |
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| CN212021913U true CN212021913U (en) | 2020-11-27 |
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| CN202020285277.4U Active CN212021913U (en) | 2020-03-10 | 2020-03-10 | Wave-shaped lattice web reinforced composite material sandwich structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204103A (en) * | 2020-03-10 | 2020-05-29 | 南京工业大学 | Wave-shaped lattice web reinforced composite material sandwich structure and preparation method thereof |
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2020
- 2020-03-10 CN CN202020285277.4U patent/CN212021913U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111204103A (en) * | 2020-03-10 | 2020-05-29 | 南京工业大学 | Wave-shaped lattice web reinforced composite material sandwich structure and preparation method thereof |
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