CN103123041A - Composite material stiffened plate with connecting joints and composite material stiffened plate connecting structure - Google Patents
Composite material stiffened plate with connecting joints and composite material stiffened plate connecting structure Download PDFInfo
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- CN103123041A CN103123041A CN2012104305194A CN201210430519A CN103123041A CN 103123041 A CN103123041 A CN 103123041A CN 2012104305194 A CN2012104305194 A CN 2012104305194A CN 201210430519 A CN201210430519 A CN 201210430519A CN 103123041 A CN103123041 A CN 103123041A
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- cover plate
- metal joint
- lower plywood
- jointing
- ladder section
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Abstract
The invention provides a composite material stiffened plate with connecting joints and a composite material stiffened plate connecting structure. The connecting joints are arranged at the end portion of the composite material stiffened plate made of a lower layer board, a rib sandwich and an upper envelope, a step section is respectively arranged on the lower layer board and the upper envelope, wherein the lower layer board and the upper envelope are arranged at the end portion of the composite material stiffened plate, the length of the step section of the lower layer board is smaller than that of the step section of the upper envelope, the end portion of the lower layer board is aligned to that of the upper envelope, connecting joint area sandwich blocks are arranged in the space between the step sections of the lower layer board and the upper envelope, and the lower layer board, the connecting joint area sandwich blocks and the upper envelope are combined into a whole. The connecting joints of two composite material stiffened plates are connected in an opposite mode, and metal connecting joint upper cover plates and metal connecting joint lower cover plates are respectively arranged at two sides of the two connected connecting joints, and the metal connecting joint upper cover plate, the connecting joints and the metal connecting joint lower cover plate are connected through bolts. The connecting area is good in matching performance, and the problem of stress concentration of the transition of the composite materials and the metal connecting joint can be solved.
Description
Technical field
What the present invention relates to is a kind of composite stiffened.The present invention also relates to a kind of be applicable to that For Composite Stiffened Structures connects and composite reinforced structure and metal construction between the linkage structure that is connected.
Background technique
Compare with the common engineering material, fibre reinforced composites performance anisotropy, interlaminar strength is low, ductility is less, connection part stress is complicated, failure mode is numerous, area of stress concentration load redistribute ability a little less than.Data shows, the majority of composite structure destroys (60%-80%) and occurs in the joint, and the jointing quality accounts for more than the 20%-30% of total quality.Therefore, it is affect one of key technology that composite material uses that joint connects, the connectivity problem of solution composite structure to alleviate architecture quality, to improve structural behaviour all significant.For Composite Stiffened Structures is one of common three kinds of structural types of composite panel (in addition for monocoque and sandwiched) extensive uses in Aeronautics and Astronautics, shipping industry, according to structure function and load state composite stiffened with the joint form that is connected docking, overlap joint, metal joint, support and connection etc. are arranged.In view of composite material join domain stress complexity and brittle failure, for guaranteeing structural integrity, metal joint is one of important joint form of primary load bearing composite stiffened always.
The metalwork joint increases outside Security except can effectively improve structural bearing capacity, but have can weld riveting, detachable and technique has the characteristics such as convenience.But metal joint is to be connected the yoke of application with the composite material of metal joint with the Rigidity Matching of composite material always, and the rigidity mismatch is the main cause of metal joint composite material Joint failure, and usually brings out the low stress inefficacy.
Summary of the invention
The object of the present invention is to provide a kind of connection area Rigidity Matching good, can improve the composite stiffened with jointing of composite material and the transitional problem of stress concentration of metal joint.The present invention also aims to provide a kind of composite stiffened linkage structure.
The object of the present invention is achieved like this:
composite stiffened with jointing of the present invention comprises by lower plywood, the composite stiffened main body that muscle sandwich and upper covering form, the end of composite stiffened main body is with jointing, constituting of described jointing: the lower plywood and the upper covering that are positioned at the end respectively have the single order bench, the length of the ladder section of lower plywood is less than the length of the ladder section of upper covering, the end part aligning of lower plywood and upper covering, be provided with connector area sandwich piece in space between the ladder section of the ladder section of lower plywood and upper covering, lower plywood, connector area sandwich piece, upper covering is combined into one.
Composite stiffened with jointing of the present invention can also comprise:
1, be provided with the transition zone laminate between the ladder section of the ladder section of lower plywood and connector area sandwich piece and upper covering.
2, inclination angle transition between the ladder section of lower plywood and lower plywood.
3, connector area sandwich piece assumes diamond in shape.
Composite stiffened linkage structure of the present invention is: the end in the composite stiffened that is comprised of lower plywood, muscle sandwich and upper covering arranges jointing, constituting of described jointing: the lower plywood and the upper covering that are positioned at the end respectively have the single order bench, the length of the ladder section of lower plywood is less than the length of the ladder section of upper covering, the end part aligning of lower plywood and upper covering, be provided with connector area sandwich piece in space between the ladder section of the ladder section of lower plywood and upper covering, lower plywood, connector area sandwich piece, upper covering are combined into one; The docking of the jointing of two composite stiffened arranges respectively metal joint upper cover plate, metal joint lower cover plate in the both sides of the jointing of two docking, connects with bolt between metal joint upper cover plate, jointing and metal joint lower cover plate.
Composite stiffened linkage structure of the present invention can also comprise:
1, the length of metal joint upper cover plate and metal joint lower cover plate is unequal, and the length of metal joint upper cover plate equals two times of length of the ladder section of lower plywood, and the length of metal joint lower cover plate equals two times of length of the ladder section of covering.
2, the thickness of metal joint upper cover plate equates with the thickness of connector area sandwich piece.
3, inclination angle, the two ends transition of metal joint lower cover plate, metal joint upper cover plate.
4, the length of metal joint lower cover plate is metal joint upper cover plate and connector area sandwich block length sum.
The present invention can overcome existing rigidity mismatch with the metal joint connection, the defective that structure efficiency is not high.
Main feature of the present invention is:
1, the non-isometric degree of metal joint upper and lower cover plates, the upper and lower cover plates length difference is connector area sandwich block length;
2, sandwich piece and upper metal cover board equal thickness guarantee the smooth transition of connector area.
3, the joint arranges the transition zone laminate, controlling under covering thickness, guarantees connector area intensity.
4, Stiffened is filled with rigid foam, adopts vacuum assisted resin infusion (VARI) technological forming.
5, inclination angle, metal cover board two ends transition.
6, connector area sandwich piece assumes diamond in shape, and its inclination angle is consistent with inclination angle, metal cover board two ends, the integrated liquid molding of sandwich piece and composite stiffened.
7, metal joint lower cover plate length is metal joint upper cover plate, connector area sandwich block length sum.
8, connected piece mixes and is connected with two of up and down metal joint cover plate glue-bolt, adopts first mechanical bolt to connect, the process program of the auxiliary injecting glue of final vacuum.
Numerous advantage of the present invention has overcome the deficiency that existing metal connects.At first, the non-isometric degree layout of metal joint cover plate, over 10cm, Joint Bending Stiffness promotes 30% when length difference (being connector area sandwich block length), and resistance to flexure promotes 10%, has better improved the connection area Rigidity Matching; Secondly, by rhombus connector area sandwich piece is set, realized the smooth transition of connector area and structure, improved the transitional stress of composite material/metal joint and concentrated.Again, adopt the composite joint of composite material/metal to have structure toughness preferably, experiment shows that structural failure has obvious plastic behavior.
Description of drawings
Fig. 1 composite stiffened metal joint connection diagram.
Fig. 2 composite material metal joint assembling schematic diagram.
Fig. 3 jointing forms structural representation.
Embodiment
For example the present invention is done more detailed description below in conjunction with accompanying drawing:
in conjunction with Fig. 3, composite stiffened with jointing comprises by lower plywood 5, the composite stiffened main body that muscle sandwich 8 and upper covering 6 form, the end of composite stiffened main body is with jointing, constituting of described jointing: the lower plywood and the upper covering that are positioned at the end respectively have the single order bench, the length of the ladder section of lower plywood is less than the length of the ladder section of upper covering, the end part aligning of lower plywood and upper covering, be provided with connector area sandwich piece 7 in space between the ladder section of the ladder section of lower plywood and upper covering, lower plywood, connector area sandwich piece, upper covering is combined into one.Be provided with transition zone laminate 9 between the ladder section of the ladder section of lower plywood and connector area sandwich piece and upper covering.Inclination angle transition between the ladder section of lower plywood and lower plywood.Connector area sandwich piece assumes diamond in shape.
In conjunction with Fig. 1 and Fig. 2, the jointing docking of two composite stiffened 3, both sides at the jointing of two docking arrange respectively metal joint upper cover plate 1, metal joint lower cover plate 2, connect with bolt 4 between metal joint upper cover plate, jointing and metal joint lower cover plate.The length of metal joint upper cover plate and metal joint lower cover plate is unequal, and the length of metal joint upper cover plate equals two times of length of the ladder section of lower plywood, and the length of metal joint lower cover plate equals two times of length of the ladder section of covering.The thickness of metal joint upper cover plate equates with the thickness of connector area sandwich piece.Inclination angle, the two ends transition of metal joint lower cover plate, metal joint upper cover plate.The length of metal joint lower cover plate is metal joint upper cover plate and connector area sandwich block length sum.
Concrete making method of the present invention is as follows:
The metal joint upper cover plate 1 of making is placed in mould, apply releasing agent, dry 20min, lay the fibre cloth of reinforcement lower plywood 5, connector area sandwich piece 7 is set, lay transition zone laminate 9, place foam core rib 8, covering 6 on outer laying stiffened panel, fibre cloth and flow-guiding screen are set at last, make vacuum bag, injected rubber hose is set, complete injecting glue, the demoulding according to the VARI technological forming, make connected piece 3.
Connected piece 3, joint upper cover plate 1 and joint lower cover plate are connected bolt to be connected, the laid flow-guiding screen in the connection area, make vacuum bag, complete between connected piece and the vacuum-assisted injecting glue in bolt gap, realize that the glue of composite stiffened, metal joint-bolt mixes and connects.
Claims (10)
1. composite stiffened with jointing, comprise by lower plywood, the composite stiffened main body that muscle sandwich and upper covering form, it is characterized in that: the end of composite stiffened main body is with jointing, constituting of described jointing: the lower plywood and the upper covering that are positioned at the end respectively have the single order bench, the length of the ladder section of lower plywood is less than the length of the ladder section of upper covering, the end part aligning of lower plywood and upper covering, be provided with connector area sandwich piece in space between the ladder section of the ladder section of lower plywood and upper covering, lower plywood, connector area sandwich piece, upper covering is combined into one.
2. the composite stiffened with jointing according to claim 1 is characterized in that: be provided with the transition zone laminate between the ladder section of the ladder section of lower plywood and connector area sandwich piece and upper covering.
3. the composite stiffened with jointing according to claim 1 and 2, is characterized in that: inclination angle transition between the ladder section of lower plywood and lower plywood.
4. the composite stiffened with jointing according to claim 1 and 2, it is characterized in that: connector area sandwich piece assumes diamond in shape.
5. the composite stiffened with jointing according to claim 3, it is characterized in that: connector area sandwich piece assumes diamond in shape.
6. composite stiffened linkage structure, it is characterized in that in the end of the composite stiffened that is formed by lower plywood, muscle sandwich and upper covering, jointing being set, constituting of described jointing: the lower plywood and the upper covering that are positioned at the end respectively have the single order bench, the length of the ladder section of lower plywood is less than the length of the ladder section of upper covering, the end part aligning of lower plywood and upper covering, be provided with connector area sandwich piece in space between the ladder section of the ladder section of lower plywood and upper covering, lower plywood, connector area sandwich piece, upper covering are combined into one; The docking of the jointing of two composite stiffened arranges respectively metal joint upper cover plate, metal joint lower cover plate in the both sides of the jointing of two docking, connects with bolt between metal joint upper cover plate, jointing and metal joint lower cover plate.
7. composite stiffened linkage structure according to claim 6, it is characterized in that: the length of metal joint upper cover plate and metal joint lower cover plate is unequal, the length of metal joint upper cover plate equals two times of length of the ladder section of lower plywood, and the length of metal joint lower cover plate equals two times of length of the ladder section of covering.
8. composite stiffened linkage structure according to claim 7, it is characterized in that: the thickness of metal joint upper cover plate equates with the thickness of connector area sandwich piece.
9. composite stiffened linkage structure according to claim 8, is characterized in that: inclination angle, the two ends transition of metal joint lower cover plate, metal joint upper cover plate.
10. composite stiffened linkage structure according to claim 9, it is characterized in that: the length of metal joint lower cover plate is metal joint upper cover plate and connector area sandwich block length sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210430519.4A CN103123041B (en) | 2012-11-01 | 2012-11-01 | Composite material stiffened plate with connecting joints and composite material stiffened plate connecting structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210430519.4A CN103123041B (en) | 2012-11-01 | 2012-11-01 | Composite material stiffened plate with connecting joints and composite material stiffened plate connecting structure |
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| CN103123041A true CN103123041A (en) | 2013-05-29 |
| CN103123041B CN103123041B (en) | 2015-07-22 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568400A (en) * | 2013-11-04 | 2014-02-12 | 新誉集团有限公司 | Connecting structure of flexible flaky material with fiber layer and rigid connecting element |
| CN104454855A (en) * | 2014-12-04 | 2015-03-25 | 中国科学院工程热物理研究所 | Composite material/metal trapezoidal tooth mixing and connecting structure and preparation method thereof |
| CN107718592A (en) * | 2017-10-09 | 2018-02-23 | 华东交通大学 | Steel connection method based on vacuum assisted resin infusion |
| CN109109328A (en) * | 2018-10-23 | 2019-01-01 | 哈尔滨工程大学 | A kind of splicing connection structure of composite sandwich plate and preparation method thereof of the surface without protrusion |
| CN110410388A (en) * | 2019-07-12 | 2019-11-05 | 中国船舶重工集团公司第七二五研究所 | A kind of mating connection structure of reinforced composite material and metal material |
| CN112659579A (en) * | 2020-11-16 | 2021-04-16 | 中材科技风电叶片股份有限公司 | Web forming method, web assembly and forming method thereof, blade and wind generating set |
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| US20070175573A1 (en) * | 2006-02-02 | 2007-08-02 | The Boeing Company | Thermoplastic composite parts having integrated metal fittings and method of making the same |
| CN101639155A (en) * | 2008-07-30 | 2010-02-03 | 森钜科技材料股份有限公司 | Composite plate assembly |
| CN202040165U (en) * | 2011-04-12 | 2011-11-16 | 哈尔滨工程大学 | T-shaped connecting structure of composite material coreboard |
| CN202391880U (en) * | 2011-12-25 | 2012-08-22 | 浙江师范大学 | Detachable seamless type plate connection device |
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2012
- 2012-11-01 CN CN201210430519.4A patent/CN103123041B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070175573A1 (en) * | 2006-02-02 | 2007-08-02 | The Boeing Company | Thermoplastic composite parts having integrated metal fittings and method of making the same |
| CN101639155A (en) * | 2008-07-30 | 2010-02-03 | 森钜科技材料股份有限公司 | Composite plate assembly |
| CN202040165U (en) * | 2011-04-12 | 2011-11-16 | 哈尔滨工程大学 | T-shaped connecting structure of composite material coreboard |
| CN202391880U (en) * | 2011-12-25 | 2012-08-22 | 浙江师范大学 | Detachable seamless type plate connection device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568400A (en) * | 2013-11-04 | 2014-02-12 | 新誉集团有限公司 | Connecting structure of flexible flaky material with fiber layer and rigid connecting element |
| CN103568400B (en) * | 2013-11-04 | 2015-07-29 | 新誉集团有限公司 | With the syndeton of fibrolaminar flexible sheet material and rigid connection part |
| CN104454855A (en) * | 2014-12-04 | 2015-03-25 | 中国科学院工程热物理研究所 | Composite material/metal trapezoidal tooth mixing and connecting structure and preparation method thereof |
| CN107718592A (en) * | 2017-10-09 | 2018-02-23 | 华东交通大学 | Steel connection method based on vacuum assisted resin infusion |
| CN109109328A (en) * | 2018-10-23 | 2019-01-01 | 哈尔滨工程大学 | A kind of splicing connection structure of composite sandwich plate and preparation method thereof of the surface without protrusion |
| CN109109328B (en) * | 2018-10-23 | 2020-09-25 | 哈尔滨工程大学 | Glue joint structure of composite material sandwich plate without bulges on surface and preparation method thereof |
| CN110410388A (en) * | 2019-07-12 | 2019-11-05 | 中国船舶重工集团公司第七二五研究所 | A kind of mating connection structure of reinforced composite material and metal material |
| CN110410388B (en) * | 2019-07-12 | 2024-03-08 | 中国船舶重工集团公司第七二五研究所 | Matching and connecting structure of reinforced composite material and metal material |
| CN112659579A (en) * | 2020-11-16 | 2021-04-16 | 中材科技风电叶片股份有限公司 | Web forming method, web assembly and forming method thereof, blade and wind generating set |
| CN112659579B (en) * | 2020-11-16 | 2022-11-08 | 中材科技风电叶片股份有限公司 | Forming method of web, web assembly and forming method thereof, blade and wind generating set |
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|---|---|
| CN103123041B (en) | 2015-07-22 |
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Effective date of registration: 20201201 Address after: Area A129, 4th floor, building 4, Baitai Industrial Park, Yazhou Bay science and Technology City, Yazhou District, Sanya City, Hainan Province, 572024 Patentee after: Nanhai innovation and development base of Sanya Harbin Engineering University Address before: 150001 Heilongjiang, Nangang District, Nantong street,, Harbin Engineering University, Department of Intellectual Property Office Patentee before: HARBIN ENGINEERING University |
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