CN209385821U - A kind of novel bionic deployable structure - Google Patents
A kind of novel bionic deployable structure Download PDFInfo
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- CN209385821U CN209385821U CN201821722895.XU CN201821722895U CN209385821U CN 209385821 U CN209385821 U CN 209385821U CN 201821722895 U CN201821722895 U CN 201821722895U CN 209385821 U CN209385821 U CN 209385821U
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- Prior art keywords
- deployable structure
- inner tube
- outer tube
- fluid
- cavity
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 95
- 239000012530 fluid Substances 0.000 claims abstract description 54
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 229920002101 Chitin Polymers 0.000 description 10
- 229920002781 resilin Polymers 0.000 description 10
- 239000007789 gas Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 102000016942 Elastin Human genes 0.000 description 7
- 108010014258 Elastin Proteins 0.000 description 7
- 229920002549 elastin Polymers 0.000 description 7
- 230000008569 process Effects 0.000 description 7
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- 238000005452 bending Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
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- 239000000017 hydrogel Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- 101710161649 Pro-resilin Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
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- 238000013036 cure process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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- 229930014626 natural product Natural products 0.000 description 1
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- 229920000642 polymer Polymers 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
A kind of novel bionic deployable structure includes at least inner tube, and the inner tube includes the first material for limiting the inner peripheral surface of the deployable structure；And outer tube, the outer tube include the second material for limiting the peripheral surface of the deployable structure；The outer tube is equipped with wave crest and trough, and the outer tube is connect at trough with inner tube；Cavity is equipped among the inner tube, one end of inner tube is to fill fluid port, can be filled with fluid in cavity.The utility model deployable structure had both guaranteed the rapid deployment of structure, met the high efficiency of expansion, and met the rigidity requirement of structure.
Description
Technical field
The utility model relates to bionic fields, and in particular to a kind of deployable structure.
Background technique
Recent space tasks have very big interest to deployable structure, have in long term planning breakthrough more
Business, deployable structure have very various spaces to use, such as deep space exploration antenna, over the ground radar, solar receiver, look in the distance
Mirror, sky shade, solar array.Especially, in terms of navigation satellite, the GPS BlockIII navigation satellite in the U.S. and the Beidou in China
Navigation RDSS system is required using unfurlable antenna.Due to the limitation of the carrying platforms such as rocket carrying space and ability, star
Carry antenna must be made into it is foldable, that is, emit when collapse, reach track after Automatic-expanding at scheduled shape.
The expansion of deployable antenna is a complicated nonlinear mechanics process, from unstable state to stable state, from
Conversion of the mechanism to structure.As the heavy caliber and lightweight of antenna quantify, flexibility, which becomes, influences the important of antenna expansion process
Factor.Requirement to expansion process is not limited only to guarantee that antenna is accurately unfolded by desired trajectory, while requiring energy during expansion
Inhibit the vibration generated by factors such as flexibilities rapidly, to guarantee the stationarity of antenna, and prevents the vibration shadow due to antenna itself
It rings and arrives the attitude of satellite.
Inflation deployable structure refers exclusively to various space Ultralight structures and inflatable structure, and inflated spatial deployable structure uses
The thin-film material of low elastic modulus makes, such as film, on ground FOLD AND PACK at very little volume, after delivery vehicle emits
Rail forms the space structure of space mission needs to deployable inflation hardening pipe inflation, expansion.
Disadvantage: (1) gas tube flexibility is had a surplus, and rigidity is insufficient, is provided mainly by inner gas pressure, or material carries out after expansion
Hardening provides.The hardening of material refers to material sheet as flexible foldable, after inflating expanded, material with it is certain in gas
Substance reacts, and is finally reached expected strength and stiffness.(2) there are winding and buckling problems when extensive.
Utility model content
In order to solve prior art problem, the utility model provides a kind of deployable structure, includes at least
Inner tube, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure；And
Outer tube, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest and trough, and the outer tube is connect at trough with inner tube；
Cavity is equipped among the inner tube, one end of inner tube is to fill fluid port,
Fluid can be filled in cavity.
In some embodiments, after cavity is filled with fluid, the first material and fluid are had an effect, and the first material contains
Fluid Volume changes.
In some embodiments, the resilience of first material is greater than 90%.
In some embodiments, after cavity is filled with fluid, the elasticity modulus of the second material is greater than the first material.
In some embodiments, the thickness of the inner tube and outer tube ratio is 1:99-99:1.
In some embodiments, first material is thermoplastic elastomer (TPE), in thermo-setting elastomer, elastin laminin
It is at least one.
In some embodiments, second material is composite material.
In some embodiments, second material is the composite material containing chitin.
In some embodiments, the elasticity modulus of first material is 0.001-1.5GPa.
In some embodiments, the elasticity modulus of second material is 3.5-8.5GPa.
In some embodiments, the elastin laminin is resilin or artificial synthesized resilin.
In some embodiments, the fluid is at least one of gas, liquid, liquid crystal material.
It in some embodiments, is the first stable state before expansion.
First stable state refers to inner tube for dry, confined state, and outer tube is folded state.
It in some embodiments, is the second stable state after expansion.
Second stable state refers to that inner tube is the free state after swelling, and outer tube is free tensional state.
In some embodiments, fluid is filled with into cavity when use.
The utility model relates to a kind of new tubular structures for containing the first material and the second material in unfolding mechanism,
Inside is the first material, and outside is the second material, and the first material and the second material may be the same or different.
Second material guarantees the rigidity of pipe, and the first material can be swollen after being filled with a small amount of liquid in pipe, generates super
Grade elasticity and resilience, guide structure expansion.
In this way, not only having guaranteed the rapid deployment of structure, but also meet rigidity requirement.
The first material in the utility model is distributed along pipeline, and after fluid enters, the power of expansion is distributed in pipeline
The efficiency of expansion is improved in everywhere.
Detailed description of the invention
Fig. 1 is the schematic diagram of deployable structure；
Fig. 2 is schematic diagram of the deployable structure in cross-section of pipeline；
Fig. 3 is for deployable structure in the schematic diagram of pipeline longitudinal section when the first stable state；
Fig. 4 is for deployable structure in the schematic diagram of pipeline longitudinal section when the second stable state；
Fig. 5 is the test result of embodiment 1；
Fig. 6 is the test result of embodiment 2；
Fig. 7 is the test result of embodiment 3；
Each label in figure is as follows: 1 is deployable structure, and 2 is fill fluid port, and 3 be inner tube, and 4 be outer tube, and 5 are
Cavity, 6 be wave crest, and 7 be trough.
Specific embodiment
As shown in Figure 1, Figure 2, Fig. 3, in order to solve prior art problem, the utility model provides a kind of deployable structure, at least
Including
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
In some embodiments, first material is high-elastic polymer.
In some embodiments, first material is thermoplastic elastomer (TPE), in thermo-setting elastomer, elastin laminin
It is at least one.
The specific example of first material described in the utility model includes but is not limited to thermoplastic elastomer (TPE), thermoset elastic
Body.
The specific example of first material described in the utility model is also possible to elastin laminin, preferably resilin
Or artificial synthesized resilin (recombinant resilin).
Elastin laminin does not dissolve in most of solvent, is only just swollen in some polar solvents.In the utility model
In some embodiments, resilin generates swelling in water, has rubber elastic behavior.
In some embodiments, after cavity is filled with fluid, the first material and fluid are had an effect, and the first material contains
Fluid Volume changes.
First material and fluid can have an effect, it will change in the first material and contain Fluid Volume, in the first material
After changing containing Fluid Volume, the property of the first material will be changed.The property that first material is changed includes but is not limited to spring back
Property, elasticity modulus.
First material is in the first stable state, is containing in the first material after compressed state and fluid generation effect
Fluid Volume increases, and the first material is intended to form the second stable state, this process, which shows, to be turned for deployable structure from rounding state
Become unfolded state.
In some embodiments, the resilience of first material is greater than 80%.
As elastic specific example, including but not limited to 80%, 81%, 82%, 83%, 84%, 85%, 86%,
87%, 88%, 89%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%.
In some embodiments, the resilience of first material is greater than 90%.
Elastic measurement is by reisilometer, and the method fallen using weight or hit is obtained, with rebound height with fall
The ratio of lower height characterizes.
The resilience of the utility model can also be characterized with the modulus of resilience, it refers to the unit bodies when not generating residual deformation
The ceiling capacity that long-pending material absorbs, by being integrated to obtain to load-deformation curve.
In some embodiments, after cavity is filled with fluid, the elasticity modulus of the second material is greater than the first material.
In some embodiments, the thickness of the inner tube and outer tube ratio is 1:99-99:1.
The specific example of the thickness of inner tube and outer tube ratio, including but not limited to, 1:99,5:95,10:90,15:85,
20:80、25:75、30:70、35:65、40:60、45:55、50:50、55:45、60:40、65:35、70:30、75:25、80:
20、85:15、90:10、95:5、99:1。
In some embodiments, second material is composite material.
In some embodiments, second material is the composite material containing chitin.
In the utility model, the composite material containing chitin is that chitin and other materials carry out physical blending,
Or chemical modification obtains.It is also possible to chitin.
In some embodiments, the composite material containing chitin can be natural products, be also possible to artificial
Synthetic material.
In some embodiments, the elasticity modulus of first material is 0.001-1.5GPa.
In some embodiments, the elasticity modulus of second material is 3.5-8.5GPa.
In some embodiments, the elastin laminin is resilin or artificial synthesized resilin.
In some embodiments, the fluid is at least one of gas, liquid, liquid crystal material.
In some embodiments, the fluid is gas.Gas can be inert gas, be also possible to non-inert gas
Body makes the first material generate swelling as long as can have an effect with the first material.
In some embodiments, the fluid is liquid, and the liquid is in water, ionic liquid, organic solvent
One or more mixing.
If the fluid is organic solvent, preferably polar organic solvent.
In some embodiments, the fluid is liquid crystal material.
It in some embodiments, is the first stable state before expansion.
First stable state refers to inner tube for dry, confined state, and outer tube is folded state.
In some embodiments, the second stable state after expansion.
Second stable state refers to that inner tube is the free state after swelling, and outer tube is free tensional state.
Such as Fig. 1, solid line is the schematic diagram that deployable structure is in the first stable state, and dotted line is that deployable structure is in second surely
The schematic diagram of state.
Such as Fig. 3, deployable structure is in the first stable state in the pre-deployed, and outer tube is folded state, has in outer tube
Wave crest and trough.
Such as Fig. 4, deployable structure is in the second stable state after deployment, and outer tube is tensional state.
Inventor has found under study for action, if deployable structure is filled with gas, makes deployable structure by the effect of air pressure
It is changed into unfolded state from rounding state, but the insufficient rigidity under unfolded state.And in order to solve this problem, it generallys use
Way is first to be filled with gas, and deployable structure is unfolded, and then carries out cure process to deployable structure, the treatment process can
To enumerate such as illumination crosslinking, heat cross-linking, crosslinking with radiation, surface treatment.It is required that it is with biggish process equipment, processing
Difficulty and complex process degree are higher.If being filled with liquid into deployable structure, deployable structure can be made in the same of expansion
When with certain rigidity.But the liquid being filled with needs a certain amount, deployable structure could be unfolded by hydraulic, protect
While demonstrate,proving rigidity, it also will increase dramatically weight, limit the application of deployable structure.In the embodiment of the utility model, it is not required to
It to be acted on using the pressure of liquid, therefore not need to be filled with a large amount of fluids.The unexpected discovery fluid of inventor can be with
One material generates swelling action, so that the first material in compressive state restores high resilience, ensure that structure can be quick
Expansion；The second material has higher elasticity modulus compared with the first material simultaneously, makes the rigidity meet demand of deployable structure.
In some embodiments, fluid is filled with into cavity when use.
After being filled with fluid, fluid and the first material generation effect make the property of the first material change, especially extensive
Multiple high resilience, so that deployable structure be promoted to be changed into unfolded state rapidly from rounding state.
The utility model is further described combined with specific embodiments below.
Embodiment 1
Such as Fig. 1-3, a kind of deployable structure is included at least
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
First material be resilin, resilience 92%, elasticity modulus 0.002GPa, Poisson's ratio 0.25,
Density 1200kg/m3,
Second material is chitin, elasticity modulus 3.8GPa, Poisson's ratio 0.25, density 1100kg/m3
The fluid is water,
The duct thickness is 0.5mm, and the thickness ratio of inner tube and outer tube is 50:50.
The duct length is 15 times of cross-sectional diameter.
With finite element software ABAQUS, test results are shown in figure 5, and the structure after expansion is produced due to carrying own wt
Change shape.Bending deformation very little after the expansion of calculation result table open conduit, meets the rigidity requirement used.
Embodiment 2
Such as Fig. 1-3, a kind of deployable structure is included at least
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
First material is elastin laminin, resilience 90%, elastic material 0.001GPa, Poisson's ratio 0.25, density
1300kg/m3,
Second material is chitin, elasticity modulus 3.8GPa, Poisson's ratio 0.25, density 1100kg/m3,
The fluid is water,
The duct thickness is 0.6mm, and the thickness ratio of inner tube and outer tube is 30:70.
The duct length is 10 times of cross-sectional diameter.
With finite element software ABAQUS, test results are shown in figure 6, and the structure after expansion is produced due to carrying own wt
Change shape.Bending deformation very little after the expansion of calculation result table open conduit, meets the rigidity requirement used.
Embodiment 3
Such as Fig. 1-3, a kind of deployable structure is included at least
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
First material is collagen, resilience 90%, elastic material 0.12GPa, Poisson's ratio 0.25, density
1300kg/m3,
Second material isPolyacrylonitrile-based carbon fibre composite material.
The fluid is water,
The duct thickness is 0.6mm, and the thickness ratio of inner tube and outer tube is 70:30.
The duct length is 10 times of cross-sectional diameter.
With finite element software ABAQUS, test results are shown in figure 7, and the structure after expansion is produced due to carrying own wt
Change shape.Bending deformation very little after the expansion of calculation result table open conduit, meets the rigidity requirement used.
Embodiment 4
Such as Fig. 1-3, a kind of deployable structure is included at least
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
First material is high-elastic hydrogel (Silicone-based tough hydrogels with high
resilience,fast self-recovery,and self-healing properties Chem.Commun.,2016,
52,8365-8368, DOI:10.1039/C6CC02665F),
Second material be chitin, elasticity modulus 3.8GPa, Poisson's ratio 0.25,
The fluid is water,
The thickness of the inner tube and outer tube ratio is 40:60.
Embodiment 5
Such as Fig. 1-3, a kind of deployable structure is included at least
Inner tube 3, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure 1；And
Outer tube 4, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest 6 and trough 7, and the outer tube is connect at trough with inner tube；
Cavity 5 is equipped among the inner tube, one end of inner tube is to fill fluid port 2,
Fluid can be filled in cavity.
First material is synthesis resilin (Elvin, C.M., et al. (2005) " Synthesis and
Properties of crosslinked recombinant pro-resilin. " Nature 437:999.),
Second material be chitin, elasticity modulus 3.8GPa, Poisson's ratio 0.25,
The fluid is water,
The thickness of the inner tube and outer tube ratio is 40:60.
Claims (8)
1. a kind of novel bionic deployable structure, which is characterized in that
It includes at least
Inner tube, the inner tube include the first material for limiting the inner peripheral surface of the deployable structure；And
Outer tube, the outer tube include the second material for limiting the peripheral surface of the deployable structure；
The outer tube is equipped with wave crest and trough, and the outer tube is connect at trough with inner tube；
Cavity is equipped among the inner tube, one end of inner tube is to fill fluid port,
Fluid can be filled in cavity.
2. deployable structure as described in claim 1, which is characterized in that after cavity is filled with fluid, the first material and fluid
It has an effect, the first material changes containing Fluid Volume.
3. deployable structure as described in claim 1, which is characterized in that the resilience of first material is more than or equal to
90%.
4. deployable structure as described in claim 1, which is characterized in that after cavity is filled with fluid, the elasticity of the second material
Modulus is greater than the first material.
5. deployable structure as described in claim 1, which is characterized in that the thickness of the inner tube and outer tube ratio is 1:
99-99:1。
6. deployable structure as described in claim 1, which is characterized in that second material is composite material.
7. deployable structure as described in claim 1, which is characterized in that the elasticity modulus of first material is 0.001-
1.5GPa。
8. deployable structure as described in claim 1, which is characterized in that the elasticity modulus of second material is 3.5-
8.5GPa。
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Cited By (1)
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