CN103832541A - Bionic dolphin skin based on electroactive polymer artificial muscles - Google Patents
Bionic dolphin skin based on electroactive polymer artificial muscles Download PDFInfo
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- CN103832541A CN103832541A CN201410107757.0A CN201410107757A CN103832541A CN 103832541 A CN103832541 A CN 103832541A CN 201410107757 A CN201410107757 A CN 201410107757A CN 103832541 A CN103832541 A CN 103832541A
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- electroactive polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
Abstract
The invention relates to the technical field of engineering bionics, in particular to bionic dolphin skin based on electroactive polymer artificial muscles. The bionic dolphin skin comprises a supporting base, a hardened conducting layer, a flexible resin layer, a flexible conducting layer, a smooth rubber layer and an artificial muscle stretching and contraction unit, wherein the artificial muscle stretching and contraction unit comprises a certain number of electroactive polymer artificial muscle bundles and stretching heads. Compared with the prior art, the electroactive polymer artificial muscles are used for simulating elastic mastoids in a dolphin skin structure, functions which are shown when the electroactive polymer artificial muscles are powered on and contract and very similar to those of biological muscles are used for simulating biological functions of the elastic mastoids in the dolphin skin structure, the flexible working mechanism of the bionic dolphin skin is more flexible and controllable, and beneficial examples are provided for engineering bionics technologies, particularly, bionic anti-drag surface manufacturing technologies in terms of structural and functional bionics.
Description
Technical field
The present invention relates to a kind of bionical porpoise skin, more particularly, refer to a kind of bionical porpoise skin based on electroactive polymer artificial-muscle, belong to engineering bionics techniques field.
Background technology
The skin resistance that effectively reduces aircraft is with raising speed, manoevreability, endurance and fuel utilization efficiency, significant for national economy and national defense safety.Dolphin, shark, the fast aquatic organism of the contour trip of tuna provide the very valuable bionical model of engineering for the mankind undoubtedly, research and develop targetedly low-resistance, bionic, drag-reducing epidermis becomes current study hotspot and difficult point efficiently.
Dolphin is the swimming championship in ocean, time scooter 70～100 kms.As far back as 1936, British scientist Gray just found that the You Suyi of dolphin is far beyond the limit of its muscle strength, and then proposed famous " Gray's antinomy ".Research discovery, why dolphin swims soon, except having stream line pattern health, the more important thing is that its special cutis elastica structure can produce " adaptive surface " that similar dashpot is the same.The skin of dolphin is divided into three layers, outmost skin covering of the surface is thin and smooth cutin membrane, centre is skin corium, many whippy tubulose mastoid processes are distributing, in mastoid process, be full of spongy material, between mastoid process, be blood or body fluid, innermost layer is dense collagenous fibres and elastic fibre, has been full of fat therebetween.In the time that dolphin moves about fast, along with the increase of water resistance, the small mastoid process of skin corium can be born very large pressure, and its shape and elasticity can make dolphin skin be risen and fallen gradually as certain non-smooth state by smooth state, can change the boundary condition of laminar sublayer, make submissiveization of border, reduce current gradient and the shearing force of boundary surface, prevent or slow down the generation of turbulent flow, thereby reduce the resistance that moves about." artificial porpoise skin " that scientist copies out is at present made up of three layers of rubber, gross thickness 2.5 mm, wherein imitate level and smooth outer bed thickness 0.5 mm of dolphin skin covering of the surface, there is rubber nipple in middle level to imitate the skin corium of dolphin, be full of astringency liquid silicone resin therebetween, lower floor is the mounted panel that thick 0.5 mm contacts with hull.Drag reduction test results shows, it can make torpedo and the submarine resistance of motion in seawater reduce 50%.But the artificial porpoise skin of this class is still located reduced levels in the imitation of, labyrinth special to porpoise skin biological prototype, especially on to the imitation of dolphin mastoid process dynamic deformation structure, be only to substitute with simple rubber nipple, obviously still have larger room for promotion at 26S Proteasome Structure and Function aspect bionical.
Artificial-muscle is a kind of novel intelligent material coming out nearly decades, and it can be under the effect of extra electric field, ambient temperature or potential of hydrogen, and the effect of being stretched and being produced power by the change of material internal structure has the function quite similar with biological muscles.The artificial muscle material of having developed at present relates to poly-mer, metal, gel and CNT etc., and wherein electroactive polymer (claim again electricity to cause polymer, be called for short EAP) is one of artificial thews material that current application is comparatively general.This artificial-muscle is that the tubulose adhesive bonding property conductive plastic boundling of inside injection special liquid is become to the complex that muscle is the same, when energising, electroconductive polymer can discharge ion in solution, and then under stimulating, DC electric field completes voluntarily expanding-contracting action by a relatively large margin, thereby possess the speciality as electric actuator basic material in micromachine, have that cost is low, reliability and a feature such as workable.
Summary of the invention
The object of the invention is to, provide a kind of bionical porpoise skin based on electroactive polymer artificial-muscle, to solve the problems of the technologies described above.
Technical matters solved by the invention can realize by the following technical solutions: based on the bionical porpoise skin of electroactive polymer artificial-muscle, it is characterized in that, comprise supporting seat, sclerosis conductive layer, flexible resin layer, compliant conductive layer, smooth rubber layer, artificial-muscle telescopic unit, described supporting seat is for supporting and bionical porpoise skin being mounted on to carrier shell wall, the lower surface of described sclerosis conductive layer and supporting seat upper surface fix, its upper surface glues together mutually with the lower surface of flexible resin layer, on described flexible resin floor, have the flexible chamber of through hole type that some arrays are arranged, the lower surface of described compliant conductive layer glues together mutually with the upper surface of flexible resin layer, its upper surface glues together mutually with the lower surface of smooth rubber layer, the corresponding flexible chamber on flexible resin floor of artificial-muscle telescopic unit of some quantity is array and is vertically arranged in sclerosis conductive layer and compliant conductive floor, described artificial-muscle telescopic unit comprises electroactive polymer artificial-muscle bundle and the drawing head of some, one end of electroactive polymer artificial-muscle bundle connects sclerosis conductive layer, the other end connects compliant conductive layer and drawing head, glue together mutually with the upper surface of compliant conductive layer the bottom surface of drawing head, corresponding being fixedly connected with of some stretch holes that its lap of drawing head is offered with smooth rubber layer lower surface.
The described bionical porpoise skin based on electroactive polymer artificial-muscle, under state of nature, the thickness of flexible resin layer is 3.0 mm～5.0 mm, the thickness of smooth rubber layer is 1.5 mm～2.0 mm.
The described bionical porpoise skin based on electroactive polymer artificial-muscle, under state of nature, the length of electroactive polymer artificial-muscle bundle is 3.0 mm～5.0 mm, the length that rear electroactive polymer artificial-muscle bundle is shunk in energising is 1.5 mm～2.5 mm.
The described bionical porpoise skin based on electroactive polymer artificial-muscle, the spacing between the artificial-muscle telescopic unit that array is arranged is 10.0 mm～15.0 mm.
The described bionical porpoise skin based on electroactive polymer artificial-muscle, the shape of drawing head is cylindrical, taper type, spherical, the diameter dimension in drawing head horizontal direction is 1.0 mm～1.2 mm.
Principle of work of the present invention is: this bionical porpoise skin is installed on to submarine navigation device carrier shell wall, in carrier navigation process by gathering Reynolds number under the calculation of parameter current working such as water temperature, route speed, water tightness, kinetic viscosity to judge streamflow regime; In the time that current reach turbulent flow, apply the direct current (DC) of some strength to sclerosis conductive layer and compliant conductive layer, to stimulate the flexible indoor generation significantly controlled contraction of electroactive polymer artificial-muscle bundle at flexible resin layer, near and then its smooth rubber layer of drawing head tractive of drive artificial-muscle telescopic unit, make each artificial-muscle telescopic unit neighbouring smooth rubber layer, compliant conductive layer and flexible resin layer produce successively elastic deformation, finally on the smooth rubber layer above each artificial-muscle telescopic unit, form micro-pit type non-smooth surface; In this case, smooth rubber layer, flexible resin layer and some artificial-muscle telescopic units of bionical porpoise skin have imitated respectively the elasticity mastoid process in the non-smooth state skin covering of the surface of true porpoise skin, flexible skin corium and skin corium, three's combined action will reduce current gradient and the shearing force of boundary surface, effectively slow down the harm of turbulent flow, thereby greatly reduce the running resistance of carrier aircraft; When not needing bionical porpoise skin performance drag reduction to do the used time, stop power supply, now electroactive polymer artificial-muscle Shu Zidong restores to the original state, and drives bionical porpoise skin also to restore to the original state, thereby completes whole drag reduction operation.
The present invention compared with prior art, tool has the following advantages: (1) the present invention imitates the elasticity mastoid process in dolphin skin texture with electroactive polymer artificial-muscle, the biological function of simulating dolphin skin mastoid process with the quite similar function of biological muscles that utilizes that its energising shows under contraction state, its elastic working mechanism is more sensitive, controlled; (2) the present invention imitates the skin corium in dolphin skin texture with flexible resin layer, not only more vivid, true to nature compared with other materials in working mechanism, and more more durable, reliable than other materials on service life; (3) the present invention is based on the produced bionical porpoise skin of electroactive polymer artificial-muscle, 26S Proteasome Structure and Function bionical aspect for engineering bionics techniques particularly the development of bionic, drag-reducing epidermis manufacturing technology useful example is provided.
Brief description of the drawings
Fig. 1 is the bionical porpoise skin appearance assumption diagram based on electroactive polymer artificial-muscle of the present invention.
Fig. 2 is the bionical porpoise skin inner structure layering internal anatomy based on electroactive polymer artificial-muscle of the present invention.
Fig. 3 is artificial-muscle telescopic unit structural representation of the present invention.
Fig. 4 is flexible resin layer structural representation of the present invention.
Fig. 5 is that smooth rubber layer of the present invention is looked up structural representation.
Fig. 6 is the bionical porpoise skin distortion schematic diagram based on electroactive polymer artificial-muscle of the present invention.
In figure: 1, supporting seat 2, sclerosis conductive layer 3, flexible resin floor 4, compliant conductive floor 5, smooth rubber floor 6, artificial-muscle telescopic unit 7, drawing head 8, electroactive polymer artificial-muscle bundle 9, flexible chamber 10, stretch hole 11, nick hole.
Detailed description of the invention
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, further set forth the present invention below in conjunction with the drawings and specific embodiments.
With reference to Fig. 1～Fig. 5, based on the bionical porpoise skin of electroactive polymer artificial-muscle, comprise supporting seat 1, sclerosis conductive layer 2, flexible resin layer 3, compliant conductive layer 4, smooth rubber layer 5, artificial-muscle telescopic unit 6; Supporting seat 1 is for supporting and bionical porpoise skin being mounted on to carrier shell wall, lower surface and supporting seat 1 upper surface of sclerosis conductive layer 2 fix, its upper surface glues together mutually with the lower surface of flexible resin layer 3, thickness under flexible resin layer 3 state of nature is 5.0 mm, on it, have the flexible chamber 9 of through hole type that some arrays are arranged, the lower surface of described compliant conductive layer 4 glues together mutually with the upper surface of flexible resin layer 3, and its upper surface glues together mutually with the lower surface that thickness is the smooth rubber layer 5 of 2.0 mm; The corresponding flexible chambers 9 through flexible resin floor 3 on of artificial-muscle telescopic unit 6 of some quantity are array and are vertically arranged in and harden conductive layer 2 and compliant conductive floor 4, and spacing between the array artificial-muscle telescopic unit of arranging is 15.0 mm; Artificial-muscle telescopic unit 6 comprises that 3 bundle electroactive polymer artificial-muscle bundles 8 and diameter are the cylindrical drawing head 7 of 1.2 mm, one end of electroactive polymer artificial-muscle bundle 8 connects sclerosis conductive layer 2, the other end connects compliant conductive layer 4 and drawing head 7, glue together mutually with the upper surface of compliant conductive layer 4 bottom surface of drawing head 7, corresponding being fixedly connected with of some stretch holes 10 that its lap of drawing head 7 is offered with smooth rubber layer 5 lower surface.
With reference to Fig. 1, Fig. 2 and Fig. 6, plan this bionical porpoise skin and be applied to throughout the year that (m), the laying length of bionical porpoise skin is 2.0 m to cox 3.2 on certain type motor boat of coastal waters activity.First, according to the common working environment of this type motor boat, (20 DEG C of seawater water temperatures, density is 1.025 × 10
3kg/m
3, kinetic viscosity is 1.002 × 10
-3kg/ms) minimum cruising speed 7 m/s of design under calculate the Reynolds number of bionical porpoise skin under this operating mode:
Obviously,
re﹥ ﹥ 0.7 × 10
6, now current have reached turbulence state.So start to apply the direct current (DC) of some strength to harden conductive layer 2 and compliant conductive layer 4, to stimulate electroactive polymer artificial-muscle bundle 8 in significantly controlled contraction of the interior generation in the flexible chamber 9 of flexible resin floor 3.Under state of nature, the length of this electroactive polymer artificial-muscle bundle 8 is 5.0 mm, the length that rear electroactive polymer artificial-muscle bundle 8 is shunk in energising becomes 2.5 mm, and then the drawing head 7 tractive smooth rubber layers 5 of drive artificial-muscle telescopic unit 6, make near each artificial-muscle telescopic unit 6 smooth rubber layer 5, compliant conductive layer 4 and flexible resin layers 3 produce successively elastic deformation, the final non-smooth surface that is covered with regular nick hole 11 that forms on the smooth rubber layer 5 above each artificial-muscle telescopic unit 6.And then bionical porpoise skin after distortion starts the drag reduction usefulness of Reality simulation porpoise skin, bring into play certain drag reduction effect.If stop power supply, bionical porpoise skin will recover virgin state with electroactive polymer artificial-muscle bundle 8.
Finally should be noted that: above embodiment is only in order to show and to describe groundwork of the present invention, principal character and advantage of the present invention, those of ordinary skill in the field should understand, the present invention is not restricted to the described embodiments, without departing from the spirit and scope of the present invention, the present invention also has various amendments or is equal to replacement, and do not depart from any amendment of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. the bionical porpoise skin based on electroactive polymer artificial-muscle, it is characterized in that, comprise supporting seat (1), sclerosis conductive layer (2), flexible resin layer (3), compliant conductive layer (4), smooth rubber layer (5), artificial-muscle telescopic unit (6), described supporting seat (1) is for supporting and bionical porpoise skin being mounted on to carrier shell wall, the lower surface of described sclerosis conductive layer (2) and supporting seat (1) upper surface fix, its upper surface glues together mutually with the lower surface of flexible resin layer (3), on described flexible resin floor (3), have the flexible chamber (9) of through hole type that some arrays are arranged, the lower surface of described compliant conductive layer (4) glues together mutually with the upper surface of flexible resin layer (3), its upper surface glues together mutually with the lower surface of smooth rubber layer (5), the corresponding flexible chamber (9) on flexible resin floor (3) of artificial-muscle telescopic unit (6) of some quantity is array and is vertically arranged in sclerosis conductive layer (2) and compliant conductive floor (4), described artificial-muscle telescopic unit (6) comprises electroactive polymer artificial-muscle bundle (8) and the drawing head (7) of some, one end of electroactive polymer artificial-muscle bundle (8) connects sclerosis conductive layer (2), the other end connects compliant conductive layer (4) and drawing head (7), glue together mutually with the upper surface of compliant conductive layer (4) bottom surface of drawing head (7), corresponding being fixedly connected with of some stretch holes (10) that its lap of drawing head (7) is offered with smooth rubber layer (5) lower surface.
2. the bionical porpoise skin based on electroactive polymer artificial-muscle according to claim 1, is characterized in that: under state of nature, the thickness of flexible resin layer (3) is 3.0 mm～5.0 mm, and the thickness of smooth rubber layer (5) is 1.5 mm～2.0 mm.
3. the bionical porpoise skin based on electroactive polymer artificial-muscle according to claim 1, it is characterized in that: under state of nature, the length of electroactive polymer artificial-muscle bundle (8) is 3.0 mm～5.0 mm, the length that rear electroactive polymer artificial-muscle bundle (8) is shunk in energising is 1.5 mm～2.5 mm.
4. the bionical porpoise skin based on electroactive polymer artificial-muscle according to claim 1, is characterized in that: the spacing between the artificial-muscle telescopic unit (6) that array is arranged is 10.0 mm～15.0 mm.
5. the bionical porpoise skin based on electroactive polymer artificial-muscle according to claim 1, is characterized in that: the shape of drawing head (7) is cylindrical, taper type, spherical, and the diameter dimension in drawing head (7) horizontal direction is 1.0 mm～1.2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410107757.0A CN103832541B (en) | 2014-03-24 | 2014-03-24 | Based on the bionical porpoise skin of electroactive polymer artificial-muscle |
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| CN201410107757.0A CN103832541B (en) | 2014-03-24 | 2014-03-24 | Based on the bionical porpoise skin of electroactive polymer artificial-muscle |
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| CN103832541A true CN103832541A (en) | 2014-06-04 |
| CN103832541B CN103832541B (en) | 2016-05-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088944A (en) * | 2021-03-22 | 2021-07-09 | 西安交通大学 | Active drag reduction material based on IPMC electroactive polymer and preparation method thereof |
| CN113200135A (en) * | 2021-06-10 | 2021-08-03 | 杭州电子科技大学 | Buoyancy adjusting device with emergency floating function and buoyancy adjusting method thereof |
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| WO2009038484A1 (en) * | 2007-09-19 | 2009-03-26 | David Aaron Bennett | Deformable robotic surface |
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2014
- 2014-03-24 CN CN201410107757.0A patent/CN103832541B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN1890124A (en) * | 2003-12-04 | 2007-01-03 | 通用汽车公司 | Airflow control devices based on active materials |
| CN1903656A (en) * | 2006-07-28 | 2007-01-31 | 哈尔滨工业大学 | Shape memory alloy wire driven pectoral wave pushing bionic underwater robot |
| WO2009038484A1 (en) * | 2007-09-19 | 2009-03-26 | David Aaron Bennett | Deformable robotic surface |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113088944A (en) * | 2021-03-22 | 2021-07-09 | 西安交通大学 | Active drag reduction material based on IPMC electroactive polymer and preparation method thereof |
| CN113088944B (en) * | 2021-03-22 | 2022-02-11 | 西安交通大学 | Active drag reduction material based on IPMC electroactive polymer and preparation method thereof |
| CN113200135A (en) * | 2021-06-10 | 2021-08-03 | 杭州电子科技大学 | Buoyancy adjusting device with emergency floating function and buoyancy adjusting method thereof |
| CN113200135B (en) * | 2021-06-10 | 2022-07-26 | 杭州电子科技大学 | Buoyancy adjusting device with emergency floating function and buoyancy adjusting method thereof |
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| CN103832541B (en) | 2016-05-11 |
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