CN109483981A - A kind of honeycomb sandwich plate of embedded multi-level structure - Google Patents
A kind of honeycomb sandwich plate of embedded multi-level structure Download PDFInfo
- Publication number
- CN109483981A CN109483981A CN201811398118.9A CN201811398118A CN109483981A CN 109483981 A CN109483981 A CN 109483981A CN 201811398118 A CN201811398118 A CN 201811398118A CN 109483981 A CN109483981 A CN 109483981A
- Authority
- CN
- China
- Prior art keywords
- energy
- honeycomb
- layer
- corrugated pipe
- absorbing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 claims abstract description 11
- 229920000728 polyester Polymers 0.000 claims abstract description 10
- 239000011094 fiberboard Substances 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 230000001413 cellular effect Effects 0.000 claims abstract description 4
- 238000003491 array Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 12
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 9
- 239000004917 carbon fiber Substances 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 9
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 241001484259 Lacuna Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004630 mental health Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Laminated Bodies (AREA)
- Vibration Dampers (AREA)
- Building Environments (AREA)
Abstract
The present invention provides a kind of honeycomb sandwich plate of embedded multi-level structure, the sandwich boards are by upper and lower two pieces of panels and intermediary cellular core sandwich structure consisting；The honeycomb core is obtained by multiple square corrugated pipe array combinations；The ripple of bellows is sine curve；The inside of the square corrugated pipe is embedded with level composite construction along short transverse, and from top to bottom first layer is energy-absorbing plate, is arranged to make up by multiple energy-absorbing born of the same parents along the length direction of square corrugated pipe；The second layer is helix tube, is placed along the height of square corrugated pipe, and its upper and lower ends constitutes sandwich structure with two pieces of polyester fiber boards respectively；Third layer is lattice structure, is made of the arrangement of multiple dot matrix monolithic arrays.The honeycomb sandwich plate of above-mentioned embedded multi-level structure solves the problems, such as noise in current cabin and vibrates more serious, it is intended to absorb noise in cabin and realize lightweight while vibration, improve the comfort of passenger under the premise of meeting intensity requirement.
Description
Technical field
The present invention relates to field of compound material, more particularly to a kind of honeycomb sandwich plate of embedded multi-level structure.
Background technique
It is continuously improved recently as people's living standard, only choosing of the tourism as people's vacation tourism, and people
Aircraft is selected also to become universal phenomenon as trip tool.But aircraft is an enclosure space, noise and vibration in main cabin
Physical and mental health and flight experience to people produce certain influence, thus it is desirable to reduce the noise in aircraft passenger compartment and
Vibration, it is therefore desirable to as far as possible in cabin noise and vibration absorb.Since aircraft is for very sensitive, institute of being self-possessed
It needs to carry out under the premise of not increasing aircraft self weight with the solution, in recent years, honeycomb is answered extensively aboard
With honeycomb is improved and is designed on this basis, is applied on machinery space bulkhead, absorption vibration and noise, but also energy have not only been able to achieve
Reach lightweight requirements.Therefore, the present invention is based on legacy cellular structure, by improving to honeycomb and in bee
Addition multi-layer compound structure improves seizing the opportunity for people to realize the effect absorbed to the vibration and noise in cabin in nest
Comfort.
Summary of the invention
It is an object of the invention to solve the problems, such as noise in current cabin and vibrate more serious, it is intended to absorb in cabin and make an uproar
Lightweight is realized while sound and vibration, improves the comfort of passenger under the premise of meeting intensity requirement.
To solve the above-mentioned problems, the present invention provides a kind of honeycomb sandwich plate of embedded multi-level structure, described three
Mingzhi's plate is by upper and lower two pieces of panels and intermediary cellular core sandwich structure consisting；
The honeycomb core is obtained by multiple square corrugated pipe array combinations；The ripple of bellows is sine curve；
The inside of the square corrugated pipe is embedded with level composite construction along short transverse, and from top to bottom first layer is energy-absorbing
Plate is arranged to make up by multiple energy-absorbing born of the same parents along the length direction of square corrugated pipe；The second layer is helix tube, along square corrugated
The height of pipe is placed, and its upper and lower ends constitutes sandwich structure with two pieces of polyester fiber boards respectively；Third layer is dot matrix
Structure is made of the arrangement of multiple dot matrix monolithic arrays.Wherein upper and lower panel uses carbon fiber board, and tensile strength is ordinary steel
More than the several times of material, there is excellent creep-resistant property, corrosion resistance and shock resistance.
In a preferred embodiment: the honeycomb core structures are using aluminium alloy as material.
In a preferred embodiment: upper and lower two pieces of panels are carbon fiber face sheets.
In a preferred embodiment: the energy-absorbing born of the same parents are 20 hexahedron structures.
In a preferred embodiment: acoustical cotton is filled in the dot matrix monomer
Compared to the prior art, the beneficial effects of the present invention are:
1. honeycomb sandwich structure, energy-absorbing effect are significant
Square-section initial spike power is smaller, and sinusoid ripple is as induction in addition, so that entire honeycomb sandwich structure
There is good assimilation effect for external vibration and impact, top panel and lower panel use carbon fiber board, have excellent
Creep-resistant property, corrosion resistance and shock resistance；For honeycomb using aluminium alloy as material, density is small, and intensity is high.Utilize carbon fiber
More energy, energy-absorbing effect can be absorbed by honeycomb sandwich structure in the good ductility of high energy absorption characteristics and aluminium alloy
It is more significant.
2. multi-layer energy-absorbing, energy absorbing efficiency is high, and sustainability is strong
When there are vibration and energy impact in the external world, deformation occurs carries out preliminary energy absorption by ripple for honeycomb sandwich plate,
When energy passes to honeycomb interior, composite construction first layer energy-absorbing born of the same parents group starts to play a role, and deformation occurs, further absorbs one
Portion of energy and vibration, and energy-absorbing born of the same parents compressed after provide bigger energy-absorbing space, make honeycomb sandwich structure and subsequent
Composite construction energy-absorbing it is more abundant.After energy-absorbing born of the same parents group, energy transmission to second layer helical structure utilizes its class spring
Characteristic can further absorb impact energy and vibration.Composite construction the last layer is by three-dimensional lattice group in honeycomb
At lattice structure, there is anisotropy, can convert complicated stress state in rod piece simple tension and compression stress state,
Load-supporting part is acted not only as, vibration can also be absorbed, improve energy absorbing efficiency.Honeycomb sandwich shell and level composite junction
The excellent scarce complementation of structure is complemented each other, the effective impact energy and vibration for absorbing aircraft, and multi-level structure, the sustainability of absorption
By force.
3. multi-layer absorbs noise, reduction noise result is significant, has both flame retardant effect
When noise passes through composite construction, polyester fiber board and second layer helical structure start to absorb noise, utilize spiral knot
The ability of the excellent absorption noise of the cavity resonance sound absorption structure and polyester fiber being configured to, is transmitted into the noise in aircraft passenger compartment
Most of to be absorbed by this part-structure, after most of noise is absorbed, remaining noise can be embedded in third layer dot matrix
Acoustical cotton in structure is absorbed, and in addition to this, acoustical cotton can also play fire-retardant effect, prevents cabin fire from spreading through
Fastly, passenger's inherently safe grade is improved.
4. porous structure and light material, meet lightweight requirements
It is strict in view of aircraft has self weight, therefore the present invention is except second layer helical structure and first layer, the
Outside polyester fiber board between three-layer composite structure, it is all made of fiberboard and aluminum material, the equal density of the selection of material is lower, and more
Material is saved using porous structure, mitigates self weight, meets lightweight requirements.
5. stable structure, adaptability is high
Outer layer carbon fiber not only has the intrinsic intrinsic property of carbon material, and has both the soft machinability of textile fabric,
It is reinforcing fiber of new generation, enhances the strength and stiffness of sandwich boards, there is excellent extraneous adaptability.Bellows structure and
With good stability, bellows and first in endergonic process when honeycomb interior lattice structure makes the present invention in face of energy impact
Layer energy-absorbing born of the same parents group when deformation occurs global shape of the present invention larger distortion will not occur, structural stability is good.The present invention not only may be used
It, can also be in the impact of aircraft encounter external air flow or collision impact to absorb the vibration and noise generated in aircraft normal operation
Certain impact energy is absorbed, the safety of passenger in main cabin is protected.
Detailed description of the invention
Fig. 1 is overall schematic of the invention；
Fig. 2 is second is that honeycomb core and bellows schematic diagram；
Fig. 3 is level composite construction schematic diagram；
Fig. 4 is first layer energy-absorbing plate schematic diagram；
Fig. 5 is second layer helical structure schematic diagram；
Fig. 6 is third layer lattice structure schematic diagram；
In figure: 101 be carbon fiber board；102 be honeycomb core；301 be bellows；302 be energy-absorbing plate；303 be helix tube；
304 be lattice structure；305 be polyester fiber board；601 be acoustical cotton.
Specific embodiment
Explanation is further described combined with specific embodiments below.
A kind of honeycomb sandwich plate of embedded multi-level structure provided by the present embodiment, overall schematic as shown in Figure 1,
It is made of upper and lower two pieces of panels 101 and intermediary cellular core 102.
Wherein upper and lower panel 101 uses carbon fiber board, and tensile strength is the several times of common iron or more, has excellent
Creep-resistant property, corrosion resistance and shock resistance.
Honeycomb core structures 102 use aluminium alloy as material, obtained by multiple square corrugated pipe array combinations, such as Fig. 2 institute
Show, the ripple of bellows, as induction, relative to traditional triangular-section bellows, is had more good using sine curve
Absorption vibration effect.
Level composite construction is embedded with inside square corrugated pipe, as shown in Fig. 2, first layer is by three-layer composite structure in pipe
Energy-absorbing plate 302 is arranged to make up, as shown in figure 4, each energy-absorbing born of the same parents along the length direction of square corrugated pipe by multiple energy-absorbing born of the same parents
For 20 hexahedron structures, using lightweight and with the aluminium of good energy-absorbing effect.Energy passes to first layer by top panel and inhales
Energy structure, energy-absorbing born of the same parents start to absorb energy and deform, and while weakening energy, increase multi-layer composite construction energy-absorbing
Space.The second layer be helix tube 303, along flat thread pipe short transverse be arranged, and its upper and lower ends respectively with
Two pieces of polyester fiber boards constitute sandwich structure, as shown in figure 5, polyester fiber board is that one kind is with polyester fiber and glass fiber
Raw material through hot press molding made of have both the material of sound absorption function, highest sound-absorption coefficient reaches in 125--4000HZ noise range
To 0.9 or more, while the unique spiral interporal lacuna of helix tube is utilized, resonance can be generated with sound wave, form cavity resonance sound absorption
Structure, relative to traditional porous sound absorption structure, this structure improves acoustic absorptivity while widening frequency band, has excellent
Sound absorption effect.Two-way interaction can effectively absorb noise, in addition, using the characteristic of helical structure class spring,
Impact energy and vibration can further be absorbed.Third layer is lattice structure 304, as shown in fig. 6, by multiple dot matrix lists
Volume array arrangement is constituted, and has anisotropy, can convert complicated stress state in rod piece simple tension and compression stress shape
State acts not only as the component for absorbing vibration, can be with load-bearing, and each monomer is interior to be filled with acoustical cotton 601, and biography can be absorbed
To the remaining noise of third layer, and play fire-retardant effect.The present invention generally uses light material and porous structure, meets light
Quantization requires.
Using the high energy absorption characteristics of carbon fiber and the good ductility of aluminium alloy, can be absorbed by honeycomb sandwich structure
More energy, energy-absorbing effect are more significant.The multi-layer composite construction embedded using honeycomb, it is normal not only to can be absorbed aircraft
The vibration and noise generated in operation can also absorb certain collision in the impact of aircraft encounter external air flow or collision impact
Can, energy absorbing efficiency is high, and sustainability is strong, and fire-retardant effect can also be effectively acted as after cabin fire, is improved in main cabin
Passenger's seizes the opportunity comfort, and plays the role of protecting passenger safety.
The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and those skilled in the art can
To readily appreciate that variation disclosed in this invention or technical scope.Alternative solution is intended to cover within the scope of the invention.Cause
This, protection scope of the present invention should be determined by the scope of the claims.
Claims (5)
1. a kind of honeycomb sandwich plate of embedded multi-level structure, it is characterised in that: the sandwich boards are by upper and lower two pieces of faces
Plate and intermediary cellular core sandwich structure consisting；
The honeycomb core is obtained by multiple square corrugated pipe array combinations；The ripple of bellows is sine curve；
The inside of the square corrugated pipe is embedded with level composite construction along short transverse, and from top to bottom first layer is energy-absorbing plate,
It is arranged to make up by multiple energy-absorbing born of the same parents along the length direction of square corrugated pipe；The second layer is helix tube, along square corrugated pipe
Height place, and its upper and lower ends constitutes sandwich structure with two pieces of polyester fiber boards respectively；Third layer is dot matrix knot
Structure is made of the arrangement of multiple dot matrix monolithic arrays.
2. a kind of honeycomb sandwich plate of embedded multi-level structure according to claim 1, it is characterised in that: the honeycomb
Cored structure is using aluminium alloy as material.
3. a kind of honeycomb sandwich plate of embedded multi-level structure according to claim 1, it is characterised in that: on described,
Lower two pieces of panels are carbon fiber face sheets.
4. a kind of honeycomb sandwich plate of embedded multi-level structure according to claim 1, it is characterised in that: the energy-absorbing
Born of the same parents are 20 hexahedron structures.
5. a kind of honeycomb sandwich plate of embedded multi-level structure according to claim 1, it is characterised in that: the dot matrix
Acoustical cotton is filled in monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398118.9A CN109483981B (en) | 2018-11-22 | 2018-11-22 | Honeycomb sandwich plate with embedded multi-level structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811398118.9A CN109483981B (en) | 2018-11-22 | 2018-11-22 | Honeycomb sandwich plate with embedded multi-level structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109483981A true CN109483981A (en) | 2019-03-19 |
| CN109483981B CN109483981B (en) | 2020-11-06 |
Family
ID=65697472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811398118.9A Active CN109483981B (en) | 2018-11-22 | 2018-11-22 | Honeycomb sandwich plate with embedded multi-level structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109483981B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391373A (en) * | 2019-07-15 | 2019-10-29 | 华侨大学 | A kind of novel energy-absorbing protection battery case |
| CN110576654A (en) * | 2019-09-04 | 2019-12-17 | 华侨大学 | Be applied to sandwich structure on car collision energy-absorbing box |
| CN110843709A (en) * | 2019-11-05 | 2020-02-28 | 华侨大学 | Novel sandwich structure automobile front anti-collision beam and assembly |
| CN110985164A (en) * | 2019-11-19 | 2020-04-10 | 华侨大学 | Vibration-damping heat-insulating silencer |
| CN111816149A (en) * | 2019-04-11 | 2020-10-23 | 中国科学院声学研究所 | Low-frequency honeycomb sound absorption device |
| CN111828517A (en) * | 2020-04-21 | 2020-10-27 | 华侨大学 | Fractal gradient cap-shaped composite structure |
| CN114074753A (en) * | 2020-08-19 | 2022-02-22 | 中国航发商用航空发动机有限责任公司 | Honeycomb body, method for producing the same, honeycomb device, acoustic liner, and aircraft engine |
| CN114919249A (en) * | 2022-04-29 | 2022-08-19 | 杭州电子科技大学 | Bumper beam adopting improved structure of mantis and shrimp procambarus distichus and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10228406A1 (en) * | 2001-06-25 | 2003-01-02 | Bernhard Scheuring | Structured element, comprises a band shaped member made of plastic, with reinforcing fibers, and a thermoplastic coating |
| CN101251227A (en) * | 2007-02-23 | 2008-08-27 | 辽宁科技大学 | Metallic honeycomb sandwich assembly energy-absorbing construction material and manufacture method thereof |
| CN102700488A (en) * | 2012-06-12 | 2012-10-03 | 湖南大学 | Buffering energy-absorbing structure |
| CN106827713A (en) * | 2017-01-20 | 2017-06-13 | 西安交通大学 | A kind of ripple square tube core body sandwich and preparation method thereof |
| CN107498948A (en) * | 2017-08-21 | 2017-12-22 | 哈尔滨工程大学 | A kind of multi-gradient dot-matrix sandwich panel and preparation method thereof |
| CN108773111A (en) * | 2018-05-28 | 2018-11-09 | 深圳先进技术研究院 | Functionally gradient honeycomb sandwich board and its manufacturing method |
-
2018
- 2018-11-22 CN CN201811398118.9A patent/CN109483981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10228406A1 (en) * | 2001-06-25 | 2003-01-02 | Bernhard Scheuring | Structured element, comprises a band shaped member made of plastic, with reinforcing fibers, and a thermoplastic coating |
| CN101251227A (en) * | 2007-02-23 | 2008-08-27 | 辽宁科技大学 | Metallic honeycomb sandwich assembly energy-absorbing construction material and manufacture method thereof |
| CN102700488A (en) * | 2012-06-12 | 2012-10-03 | 湖南大学 | Buffering energy-absorbing structure |
| CN106827713A (en) * | 2017-01-20 | 2017-06-13 | 西安交通大学 | A kind of ripple square tube core body sandwich and preparation method thereof |
| CN107498948A (en) * | 2017-08-21 | 2017-12-22 | 哈尔滨工程大学 | A kind of multi-gradient dot-matrix sandwich panel and preparation method thereof |
| CN108773111A (en) * | 2018-05-28 | 2018-11-09 | 深圳先进技术研究院 | Functionally gradient honeycomb sandwich board and its manufacturing method |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816149A (en) * | 2019-04-11 | 2020-10-23 | 中国科学院声学研究所 | Low-frequency honeycomb sound absorption device |
| CN110391373A (en) * | 2019-07-15 | 2019-10-29 | 华侨大学 | A kind of novel energy-absorbing protection battery case |
| CN110391373B (en) * | 2019-07-15 | 2022-05-03 | 华侨大学 | Energy-absorbing protection battery box |
| CN110576654A (en) * | 2019-09-04 | 2019-12-17 | 华侨大学 | Be applied to sandwich structure on car collision energy-absorbing box |
| CN110843709A (en) * | 2019-11-05 | 2020-02-28 | 华侨大学 | Novel sandwich structure automobile front anti-collision beam and assembly |
| CN110985164A (en) * | 2019-11-19 | 2020-04-10 | 华侨大学 | Vibration-damping heat-insulating silencer |
| CN111828517A (en) * | 2020-04-21 | 2020-10-27 | 华侨大学 | Fractal gradient cap-shaped composite structure |
| CN111828517B (en) * | 2020-04-21 | 2024-06-07 | 华侨大学 | Fractal gradient cap-shaped composite structure |
| CN114074753A (en) * | 2020-08-19 | 2022-02-22 | 中国航发商用航空发动机有限责任公司 | Honeycomb body, method for producing the same, honeycomb device, acoustic liner, and aircraft engine |
| CN114919249A (en) * | 2022-04-29 | 2022-08-19 | 杭州电子科技大学 | Bumper beam adopting improved structure of mantis and shrimp procambarus distichus and preparation method thereof |
| CN114919249B (en) * | 2022-04-29 | 2024-04-16 | 杭州电子科技大学 | Bumper beam adopting front chelating improved structure of mantis of sparrow tail and preparation method of bumper beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109483981B (en) | 2020-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109483981A (en) | A kind of honeycomb sandwich plate of embedded multi-level structure | |
| CN111660977B (en) | Energy-absorbing box | |
| CN102416713B (en) | Lattice-gradient foamed aluminum composite material and preparation method thereof | |
| CN202294642U (en) | Energy-absorption box | |
| CN107985237A (en) | Application on front crashproof beam structure for automobile and automobile | |
| CN212860698U (en) | Bumper reinforcing plate with excellent impact resistance and bending resistance | |
| CN108791113A (en) | Highly integrated all-in-one car ceiling with low peak endergonic structure | |
| CN106838082B (en) | A kind of buffering energy-absorbing structure | |
| CN109483962B (en) | Automobile front panel with multi-layer sandwich composite structure and application of structure | |
| CN105365835A (en) | Novel high-speed train shock-absorption and noise-reduction floor structure | |
| CN208533761U (en) | A kind of wall that soundproof effect is good | |
| CN206086610U (en) | Closed section door anticollision roof beam and car | |
| CN106564237A (en) | Lightweight and multi-level orthogonal corrugated core sandwich structure and preparation method thereof | |
| CN206884960U (en) | A kind of foamed aluminium/fiber weaving cloth compound vehicle collision prevention girders | |
| CN108265848A (en) | The energy consumption strenthening member of separate type right angle | |
| CN108978921A (en) | Lateral drawing and pressing type energy dissipation brace | |
| CN101303055A (en) | Combined buffer of polyporous material stuffing cup-shaped thin wall structure | |
| CN104790553B (en) | Combined mild steel damper | |
| CN207959577U (en) | The energy consumption strenthening member of separate type right angle | |
| CN206579464U (en) | Suspension assembly for electric automobile and electric automobile with same | |
| CN217994767U (en) | Interior trimming panel structure for noise reduction of aircraft cabin | |
| CN204344776U (en) | Leaf spring and vehicle | |
| CN215948556U (en) | Building shock isolation device | |
| CN205577150U (en) | Construction set module of combatting earthquake | |
| CN206830707U (en) | A kind of buffering energy-absorbing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |