CN108298109A - A kind of multistage grid reinforcement barrel shell structure - Google Patents
A kind of multistage grid reinforcement barrel shell structure Download PDFInfo
- Publication number
- CN108298109A CN108298109A CN201810010027.7A CN201810010027A CN108298109A CN 108298109 A CN108298109 A CN 108298109A CN 201810010027 A CN201810010027 A CN 201810010027A CN 108298109 A CN108298109 A CN 108298109A
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- grid
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- barrel shell
- circumferential direction
- cross bar
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 4
- 210000003205 muscle Anatomy 0.000 claims description 56
- 239000011159 matrix material Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005457 optimization Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/40—Arrangements or adaptations of propulsion systems
- B64G1/402—Propellant tanks; Feeding propellants
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- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Moulding By Coating Moulds (AREA)
- Wind Motors (AREA)
Abstract
The present invention relates to a kind of multistage grid reinforcement barrel shell structures, belong to primary load bearing thin-wall member design field in aerospace vehicle.Traditional single covering level-one reinforcement barrel shell structural strength is poor, and in the case of homogenous quantities, barrel shell inside configuration space is small.In consideration of it, two level grid is added in the present invention on the basis of traditional single layer grid reinforcement barrel shell, and covering, level-one grid and the solidification of two level grid is set to connect into an entirety by mould pressing process.Relatively thin coarse scale structures may be used in level-one grid in this way, to while reaching lightweight and large inner Space, structure overall stiffness is set to enhance, the grid buckling of effective inhibition grid reinforcement barrel shell structure, covering is rugosity and strength failure, and the bearing capacity of barrel shell structure improves therewith.
Description
Technical field
The present invention relates to primary load bearing thin-wall member design field in aerospace vehicle more particularly to a kind of multistage grid reinforcements
Barrel shell structure.
Background technology
Since with higher specific stiffness and specific strength, the fuel that reinforcement barrel shell structure is widely used in carrier rocket is store
In the space structures such as case and interstage section.According to carrier rocket rocket body structure during one's term of military service loading conditions it is found that axis compressive load be plus
The main stand under load operating mode of muscle barrel shell structure.In the case where axis presses operating mode, the chief destructive pattern of reinforcement barrel shell structure is buckling unstability, packet
Structure overall collapse, covering local buckling, rib local buckling and material plasticity unstability are included, and is limited to strength problem, together
Structure space is often less than normal in the case of quality.By taking traditional level-one grid reinforcement barrel shell structure as an example, as the basic born of the same parents of level-one grid
Elemental size is larger, and width is thicker, and covering is thicker, and it is rugosity to be susceptible to covering；When the basic cell element size of level-one grid is smaller, width
Thicker, covering is relatively thin, is susceptible to covering strength failure；When level-one grid, width is relatively thin, and length is larger, and covering is thicker, is easy
There is grid buckling.
With this single step arrangement of traditional level-one grid reinforcement barrel shell the difference is that many biological structures all tables of nature
Reveal multistage structure feature, and therefore brings excellent bearer properties.Such as wood, bone, from microcosmic level these
Structure can be found that they are not directly to be filled by solid material, but be made of multilevel hierarchy, this unique structure
It makes with lightweight, tough and tensile good characteristic.
Invention content
The present invention is directed to the problem that traditional level-one grid reinforcement barrel shell structural strengthening efficiency is low, design space is small, and by imitating
A kind of raw enlightenment for learning structure, it is proposed that the big multistage grid reinforcement barrel shell structure of lightweight and design space.
The technical scheme is that：
A kind of multistage grid reinforcement barrel shell structure, including the covering of outer layer, internal layer are in the level-one grid and two level grid of cartridge type；
The level-one grid is made of level-one grid circumferential direction muscle and the level-one grid cross bar intersected with level-one grid circumferential direction muscle；
The two level grid is made of two level grid circumferential direction muscle and the two level grid cross bar intersected with two level grid circumferential direction muscle.
Preferably, the covering, level-one grid and two level grid are carbon fibre composite.
Preferably, the level-one grid circumferential direction muscle is identical with the width and thickness of level-one grid cross bar；
The two level grid circumferential direction muscle is identical with the width and thickness of two level grid cross bar；
Two level grid circumferential direction muscle（3a）Width is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of width；
Two level grid circumferential direction muscle（3a）Thickness is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of thickness；
Two level grid cross bar（3b）Width is level-one grid cross bar（2b）The 1/2 to 1/5 of width；
Two level grid cross bar（3b）Thickness is level-one grid cross bar（2b）The 1/2 to 1/5 of thickness；
The level-one grid circumferential direction muscle and level-one grid cross bar interconnection form the three-dimensional cylinder dot matrix configuration of level-one grid；
The two level grid circumferential direction muscle and two level grid cross bar interconnection form the three-dimensional cylinder dot matrix configuration of two level grid；
The two level grid circumferential direction muscle is equally spacedly uniformly distributed between adjacent level-one grid circumferential direction muscle, and with level-one grid ring
It is parallel to muscle；
The level-one grid cross bar is uniformly distributed in cylinder week；
The two level grid cross bar is uniformly distributed in cylinder week；
The covering of the outer layer is connect with the level-one grid.
Preferably, the three-dimensional cylinder dot matrix configuration of the level-one grid or the three-dimensional cylinder dot matrix configuration of two level grid include
Rectangular, triangle and kagome types etc..
Preferably, the three-dimensional cylinder dot matrix configuration phase of the three-dimensional cylinder dot matrix configuration of the level-one grid and two level grid
Together；
The cell element size that the two level grid cross bar is formed is the 1/3 to 1/6 of the cell element that the level-one grid cross bar is formed.
Preferably, covering is made by certain technique（1）, level-one grid（2）With two level grid（3）As an entirety.
Preferably, two level-one grid circumferential direction muscle of the top and bottom of the level-one grid are used as the flange of barrel shell structure
In connection.
Preferably, the covering of the outer layer is inwardly wrapped in the level-one lattice of top and bottom in barrel shell structural top and bottom
Grating ring is on muscle.
The beneficial effects of the present invention are：
Compared to traditional single covering level-one reinforcement barrel shell structure, since two level grid size compares one in the barrel shell structure of the present invention
Grade grid is smaller closeer, thus the buckling unstability that relatively thin coarse scale structures resist structure may be used in level-one grid, thus
Construction weight is reduced in the case of optimization bearing capacity, effectively increases the space of structure optimization, compared to traditional structure forms
It is more easy to search out more preferably design result.
Description of the drawings
Fig. 1 is the single covering kagome type level-one grid reinforcement barrel shell structural schematic diagrams of tradition；
Fig. 2 is the single covering kagome type level-one grid reinforcement barrel shell structure top views of tradition；
Fig. 3 is the kagome type multistage grid reinforcement barrel shell structural schematic diagrams of the present invention；
Fig. 4 is the kagome type multistage grid reinforcement barrel shell structural schematic diagram vertical views of the present invention；
Fig. 5 is the single covering triangle level-one grid reinforcement barrel shell structural schematic diagram of tradition；
Fig. 6 is the single covering triangle level-one grid reinforcement barrel shell structure top view of tradition；
Fig. 7 is the triangle multistage grid reinforcement barrel shell structural schematic diagram of the present invention；
Fig. 8 is the triangle multistage grid reinforcement barrel shell structure top view of the present invention；
Fig. 9 is the rectangular level-one grid reinforcement barrel shell structural schematic diagram of the single covering of tradition；
Figure 10 is the rectangular level-one grid reinforcement barrel shell structure top view of the single covering of tradition；
Figure 11 is the rectangular multistage grid reinforcement barrel shell structural schematic diagram of the present invention；
Figure 12 is the rectangular multistage grid reinforcement barrel shell structure top view of the present invention；
Figure 13 is the multistage lattice coral reinforcement barrel shell cross-sectional view of the structure of the present invention；
In Figure 13：1- coverings；2- level-one grids；2a- level-one grid circumferential direction muscle；2b- level-one grid cross bars；3- two level grids；
3a- two level grid circumferential direction muscle；3b- two level grid cross bars.
Specific implementation mode
The present invention will be further described below with reference to the drawings：
Multistage grid reinforcement barrel shell cross-sectional view of the structure as shown in fig. 13 that, including the covering 1 of outer layer, internal layer are in the level-one lattice of cartridge type
Grid 2 and two level grid 3；
Covering 1, level-one grid 2 and two level grid 3 are carbon fibre composite；
Level-one grid 2 is by level-one grid circumferential direction muscle 2a and the level-one grid cross bar 2b structures intersected with level-one grid circumferential direction muscle 2a
At；
Two level grid 3 is by two level grid circumferential direction muscle 3a and the two level grid cross bar 3b structures intersected with two level grid circumferential direction muscle 3a
At；
Level-one grid circumferential direction muscle 2a is identical with the width and thickness of level-one grid cross bar 2b；
Two level grid circumferential direction muscle 3a is identical with the width and thickness of two level grid cross bar 3b；
Two level grid circumferential direction muscle（3a）Width is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of width；
Two level grid circumferential direction muscle（3a）Thickness is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of thickness；
Two level grid cross bar（3b）Width is level-one grid cross bar（2b）The 1/2 to 1/5 of width；
Two level grid cross bar（3b）Thickness is level-one grid cross bar（2b）The 1/2 to 1/5 of thickness；
Two level-one grid circumferential direction muscle 2a of 2 top of level-one grid and bottom end are the both ends of barrel shell structure and are used to connect as flange
It connects；
Two level grid circumferential direction muscle 3a is equally spacedly uniformly distributed between adjacent level-one grid circumferential direction muscle 2a, and with level-one grid ring
It is parallel to muscle 2a；
Level-one grid cross bar 2b is uniformly distributed in cylinder week；
Two level grid cross bar 3b is uniformly distributed in cylinder week；
Level-one grid circumferential direction muscle 2a and level-one grid cross bar 2b interconnections form the three-dimensional cylinder dot matrix structure of level-one grid 2
Type, the three-dimensional cylinder dot matrix structure of two level grid circumferential direction muscle 3a and two level grid cross bar 3b interconnections formation and level-one grid 2
The three-dimensional cylinder dot matrix configuration of the identical two level grid of type 3；
Two level grid cross bar（3b）The cell element size of formation is level-one grid cross bar（2b）The 1/3 to 1/6 of the cell element of formation.
Covering 1 is made of carbon fiber laying, is connect with level-one grid 2 and is inwardly wrapped up in barrel shell structural top and bottom
On the level-one grid circumferential direction muscle 2a of top and bottom, fiber is made to keep continuous.
Covering 1, level-one grid 2 and two level grid 3 is set to be solidified into an entirety by mould pressing process.
Embodiment 1
Kagome type grid reinforcement barrel shell structures as shown in Figures 1 to 4, Fig. 3 and Fig. 4 are the kagome type multistage lattice of the present invention
Grid reinforcement barrel shell structure, on Fig. 1 and traditional kagome type level-one grid reinforcement barrel shell architecture basics shown in Fig. 2, in
The identical kagome types two level grid of three-dimensional cylinder dot matrix configuration is added inside level-one grid.
Embodiment 2
Such as Fig. 5 to triangular grid reinforcement barrel shell structure shown in Fig. 8, Fig. 7 and the triangle multistage grid that Fig. 8 is the present invention add
Muscle barrel shell structure, on Fig. 5 and traditional triangle level-one grid reinforcement barrel shell architecture basics shown in fig. 6, in level-one lattice
The identical triangle two level grid of three-dimensional cylinder dot matrix configuration is added inside grid.
Embodiment 3
The rectangular grid reinforcement barrel shell structure as shown in Fig. 9 to Figure 12, Figure 11 and Figure 12 are that the rectangular multistage grid of the present invention adds
Muscle barrel shell structure, on Fig. 9 and traditional rectangular level-one grid reinforcement barrel shell architecture basics shown in Fig. 10, in level-one grid
The identical rectangular two level grid of three-dimensional cylinder dot matrix configuration is added in inside.
It is further described to what the present invention was done, and it cannot be said that invents is specific the above content is case study on implementation is combined
Implementation is only limitted to these explanations.For general technical staff of the technical field of the invention, in the structure for not departing from the present invention
Under the premise of think of, simple deduction can also be made and replaced, protection scope of the present invention is all should be considered as.
Claims (8)
1. a kind of multistage grid reinforcement barrel shell structure, which is characterized in that the covering including outer layer（1）, internal layer be in cartridge type level-one
Grid（2）With two level grid（3）；
Level-one grid（2）By level-one grid circumferential direction muscle（2a）With with level-one grid circumferential direction muscle（2a）The level-one grid cross bar of intersection
（2b）It constitutes；
Two level grid（3）By two level grid circumferential direction muscle（3a）With with two level grid circumferential direction muscle（3a）The two level grid cross bar of intersection
（3b）It constitutes.
2. a kind of multistage grid reinforcement barrel shell structure according to claim 1, which is characterized in that covering（1）, level-one grid
（2）With two level grid（3）It is carbon fibre composite.
3. a kind of multistage grid reinforcement barrel shell structure according to claim 1, which is characterized in that
Level-one grid circumferential direction muscle（2a）With level-one grid cross bar（2b）Width and thickness it is identical；
Two level grid circumferential direction muscle（3a）With two level grid cross bar（3b）Width and thickness it is identical；
Two level grid circumferential direction muscle（3a）Width is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of width；
Two level grid circumferential direction muscle（3a）Thickness is level-one grid circumferential direction muscle（2a）The 1/2 to 1/5 of thickness；
Two level grid cross bar（3b）Width is level-one grid cross bar（2b）The 1/2 to 1/5 of width；
Two level grid cross bar（3b）Thickness is level-one grid cross bar（2b）The 1/2 to 1/5 of thickness；
Level-one grid circumferential direction muscle（2a）With level-one grid cross bar（2b）Interconnection forms level-one grid（2）Three-dimensional cylinder point
Battle array configuration；
Two level grid circumferential direction muscle（3a）With two level grid cross bar（3b）Interconnection forms two level grid（3）Three-dimensional cylinder point
Battle array configuration；
Two level grid circumferential direction muscle（3a）Equally spacedly it is uniformly distributed in adjacent level-one grid circumferential direction muscle（2a）Between, and with level-one lattice
Grating ring is to muscle（2a）It is parallel；
Level-one grid cross bar（2b）It is uniformly distributed in cylinder week；
Two level grid cross bar（3b）It is uniformly distributed in cylinder week；
The covering of outer layer（1）With level-one grid（2）Connection.
4. a kind of multistage grid reinforcement barrel shell structure according to claim 3, which is characterized in that level-one grid（2）Three
Tie up cylinder dot matrix configuration or two level grid（3）Three-dimensional cylinder dot matrix configuration include rectangular, triangle and kagome types etc..
5. a kind of multistage grid reinforcement barrel shell structure according to claim 3, which is characterized in that level-one grid（2）Three
Tie up cylinder dot matrix configuration and two level grid（3）Three-dimensional cylinder dot matrix configuration it is identical；
Two level grid cross bar（3b）The cell element size of formation is level-one grid cross bar（2b）The 1/3 to 1/6 of the cell element of formation.
6. a kind of multistage grid reinforcement barrel shell structure according to claim 1 or 3, which is characterized in that pass through certain technique
Make covering（1）, level-one grid（2）With two level grid（3）As an entirety.
7. a kind of multistage grid reinforcement barrel shell structure according to claim 3, which is characterized in that level-one grid（2）Top
The two level-one grid circumferential direction muscle in portion and bottom（2a）Flange as barrel shell structure.
8. a kind of multistage grid reinforcement barrel shell structure according to claim 3, which is characterized in that the covering of outer layer（1）
Barrel shell structural top and bottom are inwardly wrapped in the level-one grid circumferential direction muscle of top and bottom（2a）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010027.7A CN108298109B (en) | 2018-01-05 | 2018-01-05 | Multistage grid adds muscle shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810010027.7A CN108298109B (en) | 2018-01-05 | 2018-01-05 | Multistage grid adds muscle shell structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108298109A true CN108298109A (en) | 2018-07-20 |
| CN108298109B CN108298109B (en) | 2023-07-07 |
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ID=62868230
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810010027.7A Active CN108298109B (en) | 2018-01-05 | 2018-01-05 | Multistage grid adds muscle shell structure |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861790A (en) * | 2019-10-31 | 2020-03-06 | 上海宇航系统工程研究所 | Pure lattice force bearing cylinder |
| CN111717422A (en) * | 2020-06-04 | 2020-09-29 | 天津爱思达航天科技有限公司 | Fairing based on grid structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086378A (en) * | 1975-02-20 | 1978-04-25 | Mcdonnell Douglas Corporation | Stiffened composite structural member and method of fabrication |
| US20060172121A1 (en) * | 2005-02-01 | 2006-08-03 | Lee Shin S | Cellular composite grid-stiffened structure |
| CN104608915A (en) * | 2015-01-30 | 2015-05-13 | 中国人民解放军国防科学技术大学 | Multilayer grating bearing cylinder and preparation method thereof |
-
2018
- 2018-01-05 CN CN201810010027.7A patent/CN108298109B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086378A (en) * | 1975-02-20 | 1978-04-25 | Mcdonnell Douglas Corporation | Stiffened composite structural member and method of fabrication |
| US20060172121A1 (en) * | 2005-02-01 | 2006-08-03 | Lee Shin S | Cellular composite grid-stiffened structure |
| CN104608915A (en) * | 2015-01-30 | 2015-05-13 | 中国人民解放军国防科学技术大学 | Multilayer grating bearing cylinder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 隋倩倩、江舒等: ""多级三角形格栅夹芯板力学分析"", 《复合材料学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861790A (en) * | 2019-10-31 | 2020-03-06 | 上海宇航系统工程研究所 | Pure lattice force bearing cylinder |
| CN110861790B (en) * | 2019-10-31 | 2024-02-06 | 上海宇航系统工程研究所 | Pure lattice force-bearing cylinder |
| CN111717422A (en) * | 2020-06-04 | 2020-09-29 | 天津爱思达航天科技有限公司 | Fairing based on grid structure |
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| Publication number | Publication date |
|---|---|
| CN108298109B (en) | 2023-07-07 |
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