CN104924626A - Composite fiber strip, composite laminate and composite material - Google Patents
Composite fiber strip, composite laminate and composite material Download PDFInfo
- Publication number
- CN104924626A CN104924626A CN201510349198.9A CN201510349198A CN104924626A CN 104924626 A CN104924626 A CN 104924626A CN 201510349198 A CN201510349198 A CN 201510349198A CN 104924626 A CN104924626 A CN 104924626A
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- China
- Prior art keywords
- composite
- fiber
- segment
- section
- plys
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a composite fiber strip, a composite laminate and a composite material. The composite fiber strip comprises a plurality of fiber sections (1) in end-to-end connection, an included angle (2) is formed at the joint of each two adjacent fiber sections (1), and the composite fiber strip is used for forming the composite laminate. By change of included angles of the fiber sections, axial pressure stability of the composite fiber strip can be changed to obtain the composite fiber strip high in axial pressure stability, and the composite fiber strip is simple in processing and production.
Description
Technical field
The present invention relates to technical field of composite materials, particularly relate to a kind of composite fiber bar, composite plys and composite.
Background technology
In prior art, composite plys in the composite of a large amount of use both at home and abroad is at present one-way tape or the fabric of fibers straight manufacture, all the stiffness structure such as in face by the composite material laminated board structure of fibers straight Lay up design and production, its rigidity is poor, and the axial compression collapsing load of composite material laminated board is lower.
Therefore, wish a kind of technical scheme to overcome or at least alleviate at least one above-mentioned defect of prior art.
Summary of the invention
The object of the present invention is to provide a kind of composite fiber bar to overcome or at least alleviate at least one above-mentioned defect of prior art.
For achieving the above object, the invention provides a kind of composite fiber bar.Described composite fiber bar comprises multistage segment of fiber, wherein, and each section of mutual tandem array of described segment of fiber, and each section of described segment of fiber joining place has angle, described composite fiber bar is for forming described composite plys.
Preferably, between the joining place of every two segment of fiber be mutually connected, there is superposition section, for connecting the two section fibre sections be mutually connected.
Preferably, the angle number of degrees of described each section fibre section joining place are between 10 degree to 75 degree.
Preferably, described composite fiber comprises three sections of described segment of fiber.
Present invention also offers a kind of composite plys, described composite plys is formed by the braiding of a plurality of composite fiber bar order as above.
Present invention also offers a kind of composite, described composite is made up of the composite plys as above of a plurality of mutual superposition.
Preferably, described composite comprises the ultimate fibre composite plys of a plurality of mutual superposition further, wherein, is provided with composite plys described in one deck between any two-layer ultimate fibre composite plys.
Preferably, described composite plys superposes mutually, forms described composite.
Preferably, be provided with reinforcement between described composite, described reinforcement is for increasing the strength and stiffness of described composite.
Preferably, described reinforcement is two, and arranged in parallel, and the distance between two described reinforcements is b, is provided with one section of described segment of fiber and the segment of fiber that is connected with segment of fiber two ends described in this at least partially between described two described reinforcements; Being of a size of at least partially of any section fibre section in the segment of fiber be connected with segment of fiber two ends described in this: account for 10% to 15% of the distance b between described two described reinforcements.
In composite fiber bar of the present invention, composite fiber bar comprises multistage segment of fiber, wherein, and the mutual tandem array of each section fibre section, and each section fibre section joining place has angle.
Adopt this structure, changed the Axial Compression Stability of this composite fiber bar by the angle changed between each section fibre section, thus obtain higher Axial Compression Stability composite fiber bar, and composite fiber bar of the present invention processing is simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of composite plys according to an embodiment of the invention.
Fig. 2 is the schematic diagram that the elastic modelling quantity of composite of the present invention according to Fig. 1 changes with the change of width.
Reference numeral:
| 1 | Segment of fiber | 3 | Reinforcement |
| 2 | Angle |
Detailed description of the invention
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
Composite fiber bar of the present invention comprises multistage segment of fiber, wherein, and every section fibre section tandem array, and each section fibre section joining place has angle, composite fiber bar is for forming composite plys.
Adopt this structure, by change each section spacing between angle and change the Axial Compression Stability of this composite fiber bar, thus obtain higher Axial Compression Stability composite fiber bar, and composite fiber bar of the present invention processing is simple.
Fig. 1 is the structural representation of composite plys according to an embodiment of the invention.Fig. 2 is the schematic diagram that the elastic modelling quantity of composite of the present invention according to Fig. 1 changes with the change of width.
Composite fiber bar as shown in Figure 1 comprises three section fibre sections 1, wherein, and mutual tandem array between each section fibre section 1, and each section fibre section 1 joining place has angle 2, this composite fiber bar is for forming described composite plys.
Be understandable that, the quantity of segment of fiber can sets itself as required.Such as, four section fibre sections, five section fibre sections or more.
In the present embodiment, between the joining place of every two segment of fiber 1 be mutually connected, there is superposition section, for connecting the two section fibre sections 1 be mutually connected.Adopt this structure, can make, between above-mentioned segment of fiber, there is good annexation.
See Fig. 1, in the present embodiment, the angle number of degrees of each section fibre section 1 joining place are between 10 degree to 75 degree.Be understandable that, by the in-plane stiffness regulating these number of degrees can regulate this composite plys or composite, thus reach the object of the present invention.
Present invention also offers a kind of composite plys, described composite plys is formed by the braiding of a plurality of composite fiber bar order as above.
In the present embodiment, composite is made up of the composite plys as above of a plurality of mutual superposition.Particularly, in the present embodiment, each above-mentioned composite plys superposes mutually, forms composite.
Be understandable that, in an alternative embodiment, described composite comprises the ultimate fibre composite plys of a plurality of mutual superposition further, wherein, is provided with a plurality of composite plys between any two-layer ultimate fibre composite plys.
See Fig. 1, in the present embodiment, be provided with reinforcement 3 between described composite, reinforcement 3 is for increasing the strength and stiffness of composite.
See Fig. 1, in the present embodiment, reinforcement 3 is two, and arranged in parallel, and the distance between two reinforcements 3 is b, be provided with a section fibre section 1 between two reinforcements 3 and the segment of fiber 1 that is connected with these segment of fiber 1 two ends at least partially; Being of a size of at least partially of any section fibre section 1 in the segment of fiber 1 be connected with these segment of fiber 1 two ends: account for 10% to 15% of the distance b between two reinforcements.In this size range, test proves, its Axial Compression Stability is best.
Do further explaination to the present invention by way of example below, be understandable that, following citing does not form any limitation of the invention.
See Fig. 1 and Fig. 2, this figure be a certain simply supported on four sides flat board face in the schematic diagram that changes with the change of width of elastic modelling quantity.
It is 890mm that this four limits cylinder props up dull and stereotyped length, and wide is 200mm, bears the compressive load of 60KN.The material property of fibers straight material prepreg is: laminate longitudinal modulus E
11=117GPa, laminate transverse modulus E
22=17GPa, laminate is in length and breadth to shear modulus G
12=4.6GPa, laminate Poisson's ratio v
12=0.3, laminate thickness in monolayer t=0.25mm.According to fibers straight one-way tape according to ply stacking-sequence [θ/-θ]
8slaying forms, and its best ply stacking angle is 42.5 °, and its destabilizing factors is 0.869.Record by routine test, do not repeat them here.
According to the composite plys of three section fibre sections in embodiments of the invention, according to ply stacking-sequence [θ/-θ]
8slaying forms, and its optimal parameter is θ
1=8.6 °, θ
2=54.1 °, l=25mm, its destabilizing factors is 1.667, and under the prerequisite not increasing construction weight, the axial compression collapsing load of this laminate improves 91.8%.Fig. 2 is seen with the change of width by elastic modelling quantity in the face of the laminate of the variation rigidity composite plys laying of syllogic varied angle fiber, syllogic varied angle fibrous composite laying achieves the change of in-plane stiffness, the local elastic modelling quantity large in load is also large, thus improves the stability of total.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a composite fiber bar, it is characterized in that, described composite fiber bar comprises multistage segment of fiber (1), wherein, each section of described segment of fiber (1) tandem array mutually, and each section of described segment of fiber (1) joining place has angle (2), described composite fiber bar is for forming described composite plys.
2. composite fiber bar as claimed in claim 1, is characterized in that, has superposition section between the joining place of every two segment of fiber (1) be mutually connected, for connecting the two section fibre sections (1) be mutually connected.
3. composite fiber bar as claimed in claim 1, it is characterized in that, the angle number of degrees of described each section fibre section (1) joining place are between 10 degree to 75 degree.
4. as in claims 1 to 3 as described in any one as described in composite fiber bar, it is characterized in that, described composite fiber comprises three sections of described segment of fiber (1).
5. a composite plys, is characterized in that, described composite plys is formed as the composite fiber bar order in Claims 1-4 as described in any one weaves by a plurality of.
6. a composite, is characterized in that, described composite is made up of the composite plys as claimed in claim 5 of a plurality of mutual superposition.
7. composite as claimed in claim 6, it is characterized in that, described composite comprises the ultimate fibre composite plys of a plurality of mutual superposition further, wherein, is provided with composite plys described in one deck between any two-layer ultimate fibre composite plys.
8. composite as claimed in claim 6, it is characterized in that, described composite plys superposes mutually, forms described composite.
9. as the composite in claim 6 to 8 as described in any one, it is characterized in that, be provided with reinforcement (3) between described composite, described reinforcement (3) is for increasing the strength and stiffness of described composite.
10. composite as claimed in claim 9, it is characterized in that, described reinforcement (3) is two, and it is arranged in parallel, article two, the distance between described reinforcement (3) is b, is provided with one section of described segment of fiber (1) and the segment of fiber (1) that is connected with segment of fiber described in this (1) two ends at least partially between described two described reinforcements (3);
Being of a size of at least partially of any one section fibre section (1) in the segment of fiber (1) be connected with segment of fiber described in this (1) two ends: account for 10% to 15% of the distance b between described two described reinforcements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349198.9A CN104924626B (en) | 2015-06-23 | 2015-06-23 | A kind of composite fiber bar, composite plys and composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349198.9A CN104924626B (en) | 2015-06-23 | 2015-06-23 | A kind of composite fiber bar, composite plys and composite |
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| Publication Number | Publication Date |
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| CN104924626A true CN104924626A (en) | 2015-09-23 |
| CN104924626B CN104924626B (en) | 2018-03-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514754A (en) * | 2018-12-04 | 2019-03-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of variation rigidity composite plys of continuous fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020053400A1 (en) * | 2000-10-13 | 2002-05-09 | Torsten Lorenz | Method for producing preforms from fiber composites as well as preform produced with this method |
| CN202480462U (en) * | 2011-12-12 | 2012-10-10 | 中国科学院宁波材料技术与工程研究所 | Fabric with high bending resistance |
| CN204773653U (en) * | 2015-06-23 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Combined material ribbon, combined material spread layer and combined material |
-
2015
- 2015-06-23 CN CN201510349198.9A patent/CN104924626B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020053400A1 (en) * | 2000-10-13 | 2002-05-09 | Torsten Lorenz | Method for producing preforms from fiber composites as well as preform produced with this method |
| CN202480462U (en) * | 2011-12-12 | 2012-10-10 | 中国科学院宁波材料技术与工程研究所 | Fabric with high bending resistance |
| CN204773653U (en) * | 2015-06-23 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Combined material ribbon, combined material spread layer and combined material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109514754A (en) * | 2018-12-04 | 2019-03-26 | 中国航空工业集团公司西安飞机设计研究所 | A kind of variation rigidity composite plys of continuous fiber |
| CN109514754B (en) * | 2018-12-04 | 2020-12-29 | 中国航空工业集团公司西安飞机设计研究所 | Continuous fiber's variable rigidity composite material layer |
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| Publication number | Publication date |
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| CN104924626B (en) | 2018-03-02 |
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