CN105799231A - Sandwich composite material with opposite-hemispherical-shell columnar cell structure - Google Patents
Sandwich composite material with opposite-hemispherical-shell columnar cell structure Download PDFInfo
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- CN105799231A CN105799231A CN201610149385.7A CN201610149385A CN105799231A CN 105799231 A CN105799231 A CN 105799231A CN 201610149385 A CN201610149385 A CN 201610149385A CN 105799231 A CN105799231 A CN 105799231A
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- 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 form; Layered products 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 form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/18—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side
- B32B3/20—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by an internal layer formed of separate pieces of material which are juxtaposed side-by-side of hollow pieces, e.g. tubes; of pieces with channels or cavities
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- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
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- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/56—Damping, energy absorption
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Abstract
The invention discloses a sandwich composite material with an opposite-hemispherical-shell columnar cell structure.Multiple energy-absorption columnar cell units which are each composed of two hemispherical shells and arranged in an up-and-down mode are arranged between a first panel and a second panel, the opening ends of every two corresponding hemispherical shells are connected with the inner side face of the first panel and the inner side face of the second panel respectively, and the two corresponding hemispherical shells are connected with each other or make contact with each other.According to the sandwich composite material, the progressive energy-absorption advantage can be exerted, and the negative influence, caused due to the fact that internal stress peak values of other columnar cell types are higher, on a support structure is avoided.The spherical-shell columnar cell structure does not have a threshold in deformation and energy absorption, and for different types of impacts and vibrating loads, energy can be absorbed through deformation of a columnar cell body; in the deformation and energy absorption processes, the internal stress of the columnar cell structure for bearing the impacts and loads is gradually increased along with deformation, and a larger internal stress peak value cannot occur; machining and making are easy, and industrial production is easy.
Description
Technical field
The present invention relates to energy-absorption type core filled composite material, especially arranged the core filled composite material of the scapus born of the same parents' structure of hemispherical Shell in opposite directions of the post cell type endergonic structure formed by two Loadings On Hemispherical Shells in opposite directions.
Background technology
Commercial production, equipment manufacturing, space flight and aviation and military protection etc. are more and more higher for lightweight, advanced composite material (ACM) demand high-strength, energy-absorbing, vibration damping.Sandwich material is usually and is formed by weld or splicing etc. by two-layer high intensity thin panel and middle lightweight core layer, it had both combined, and panel material is counter-bending, stretch capability strong and the advantage of core material plastic deformation energy-absorbing, make use of again that sandwich structure lightweight, specific strength are high, specific stiffness big and the advantage such as energy-obsorbing and damping, it is a kind of function integration structural material, is rapidly developed in above-mentioned field.
Sandwich material can be divided into 1 according to the kind of sandwich layer, polymer core filled composite material, and 2, foam aluminium sandwich composite, 3, three classes such as type such as truss core material.
1, polymer core filled composite material: polymer foams is a kind of modal core material, mainly has polrvinyl chloride (PVC), polystyrene (PS), polyurethane (PU), Polymethacrylimide (PMI), Polyetherimide (PEI) and acrylonitrile-styrene (SAN or AS) [8].Wherein, hard polyaminoester (RPUR) foamed materials, it is possible to relax impact by the compression of self significant plasticity, reduce stress amplitude, and within the scope of certain strain rate, along with the increase of strain rate, yield strength is gradually increased.But polymer foams low strength, the ess-strain rate under impact load is little, and the energy-absorbing rate under same thickness size is little, and energy absorption performance is relatively limited.
2, foam aluminium sandwich composite: foam aluminium sandwich composite is the composite endergonic material at double layer of metal one layer of foamed aluminium material of panel central filler.This kind of composite often uses the material such as steel plate, aluminium alloy plate as upper and lower panel to improve structural bearing intensity, and utilize the relatively low feature of foamed aluminium material shock wave impedance, under Impact Load, produce plastic deformation be compacted, thus greatly weakening stress wave intensity.Although foamed aluminium increasingly receives the concern of people as energy-absorbing material, but stably being affected by pore-size distribution of its energy absorption performance is bigger, may result in regional area to occur straining relatively low but stress concentration phenomenon when the skewness in aperture, local stress has exceeded the yield stress of foamed aluminium matrix material, ultimately result in the Analysis of " Plastic Instability " of early stage, it is difficult to keep stress in deformation process uniform, stable, and foamed aluminium material price is higher, also limits its range of application.
3, truss core material.
Lattice material is a kind of porous material with ordered micro structure, is characterized in that body density is little, specific surface area big, more high than mechanical property.It can be used as the truss core material of sandwich layer to produce huge plastic deformation because of structure dynamics unstability under explosion wave load action, can dissipate shock wave energy effectively, thus has good explosion-proof impact property.Version according to lattice material, can be divided into two and three dimensions truss core material by truss core composite.Mainly by plane polygon, through vertical plane direction, stretching forms its core structure of two-dimensional lattice sandwich material.Its core structure of three-dimensional lattice sandwich material is mainly formed by necessarily regularly arranged by microcomponents such as bar, plate, post born of the same parents.
(1) topology configuration sandwich material
The three-dimensional lattice sandwich material that topology configuration sandwich material is is microcomponent with bar, be a kind of designed by model molecule dot matrix configuration containing static determinacy/statically indeterminate porous ordered micro structure material, its common geometric configuration includes drawing together Kagom é structure, pyramid structure, tetrahedral structure etc..Its specific strength of topology configuration lattice material, specific stiffness are higher than conventional cellular material, and bearing capacity is relatively strong, simultaneously under Impact Load, it is possible to effectively absorb shock wave energy by bigger deformation such as the flexing of sandwich layer rod member, layering, fractures.
When unit mass impact energy is bigger, tetrahedral structure sandwich material has more advantage than cellular sandwich material, and especially pyramid structure sandwich material energy absorption characteristics is more excellent.But the difficulty of processing of topology configuration sandwich material is big, and especially the processed complex of pyramid structure sandwich material restricts its extensive use.
(2) ripple sandwich material
Ripple sandwich material is a kind of common three-dimensional lattice sandwich material, and its sandwich layer is constituted with plate for microcomponent, only regularly arranged along a direction, longitudinal section likeness in form corrugated, the more upper and lower two-layer lightweight panels of compound.The feature that ripple sandwich material has specific strength height, specific stiffness is high, also has good performance in fire-proof and thermal-insulation, impact resistance, antiknock etc..Compared to other core filled composite materials, ripple core filled composite material except the capability of antidetonance well except also there is the feature that bearing capacity is strong.Deformation when ripple core filled composite material high speed impact is relatively small, and peak load is relatively large, and the energy efficiency of absorption is not high.
(3) post born of the same parents sandwich material
Post born of the same parents are similar to thin-wall metal pipe, are a kind of low cost, high efficiency buffering energy-absorbing configurations, and as energy-absorbing material, post born of the same parents' core filled composite material sandwich layer is made up of the post born of the same parents' unit arranged according to certain rules, and at one layer of thin panel of upper and lower compound.Panel material has higher flexural strength and hot strength, it is possible to bear Tensile or Compressive Loading in the face caused by moment of flexure, it is ensured that composite has higher bearing strength.Post born of the same parents' material mainly, under Impact Load, unloads shock strength by significant plastic deformation, thus reaching the effect of energy-absorbing buffering effectively.It has the advantages such as large deformation carrying stable, deformation time length, compression range length under Blast Loads, and can significantly improve energy absorption performance by porous materials such as filled polyurethane foam, foamed aluminiums.Compared to traditional structural materials, post born of the same parents' core filled composite material has lightweight, specific strength height, specific stiffness high, and its antiknock damping property is excellent.The infrastructure element of post born of the same parents' core filled composite material energy-absorbing character is post born of the same parents' unit, and the geometric configuration according to unit can be classified as: square tube and pipe unit, many born of the same parents pipe unit, global shell unit and combination geometry unit.
The unit of square tube and pipe both configurations be study the earliest, most widely used two kinds of post born of the same parents' unit.At present, the absorbing energy layer being basic building block with the unit of this two classes configuration is widely used in the absorbing energy layer of various transport facility.The energy absorbing efficiency of metal thin-wall pipe to be significantly better than square tube.Internally ribbed in square tube or pipe, constitute many born of the same parents unit such as double; two born of the same parents, three categories of overseas Chinese, four born of the same parents.If the many born of the same parents' pipes of continuous print, constitute honeycomb sandwich structure.Under Impact Load, it is possible to effectively absorb shock wave energy by bigger deformation such as many born of the same parents' pipe/honeycomb sandwich layer flexings.Its energy absorption performance is significantly increased than square tube and pipe.Above-mentioned square tube, pipe, many born of the same parents/honeycomb textures post born of the same parents' unit energy-absorbing value that is badly deformed high, but there is a distorting load " threshold value " namely for a certain post born of the same parents' unit determined, applied shock load must reach on certain numerical value, just can there is plastic deformation in this post born of the same parents' unit, thus realizing the absorption of impact energy.When external loads is relatively small, its load peak value may not reach pipe deformation energy-absorbing " threshold value ", causes pipe indeformable energy-absorbing, and additional impact load can only be played load, intermal force by this post born of the same parents' unit, substantially can not play energy-absorbing function.
(3) combination geometry unit
Square tube and pipe etc. are commonly referred to as geometry unit with open circles vertebral body, the combined post born of the same parents' unit of spherical shell.What at present research was more is energy-absorbing unit that hollow metal cylinder body+conulite+spherical shell structure combines.Research shows, under Axial impact Load effect, the energy absorption performance of this combination geometric configuration is higher than two parts configuration each energy absorption performance sum formed, and along with axial impact speed increases, the energy absorption performance of combination geometric configuration also improves constantly.
This structure can be largely overcoming the post born of the same parents' element deformation energy-absorbing limitation to impact load " threshold value ".But there is a difficult problem to be in that: one is that spatial geometric shape is more complicated, complicated process of preparation, processing difficulties is relatively costly；Two is appoint so to there is bigger load " threshold value " restriction: if hemispherical Shell+pipe compound mode, under the state that is badly deformed, energy-absorbing value is very big, but in Practical Project, owing to the feature of impact load is that action time is short, initial stage load is then decayed rapidly greatly.Therefore, after first hemispherical Shell deforms energy-absorbing, due to the rapid reduction of impact load energy, load peak value may not reach pipe deformation energy-absorbing " threshold value ", causing pipe indeformable energy-absorbing, so that integral energy-absorbing structure energy absorbing efficiency can not be not fully exerted, energy absorbing efficiency significantly reduces.
Summary of the invention
The present invention is directed to various core filled composite material above shortcomings in prior art, it is provided that a kind of energy-absorbing density is high, the core filled composite material of the scapus born of the same parents' structure of hemispherical Shell in opposite directions of progressive energy-absorbing.
Technical scheme: the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions, it is characterized in that: include the first panel and the second panel, between the first panel and the second panel, it is provided with several energy-absorbing post born of the same parents' unit, each energy-absorbing post born of the same parents' unit is made up of two Loadings On Hemispherical Shells setting up and down, the opening of two Loadings On Hemispherical Shells is connected with the medial surface of the first panel and the second panel respectively, is connected or contacts between upper and lower two Loadings On Hemispherical Shells.
Further feature is: is provided with cushion block between upper and lower two Loadings On Hemispherical Shells, is connected by backing plate between upper and lower two Loadings On Hemispherical Shells.
Described backing plate is overall structure, and two Loadings On Hemispherical Shells up and down of each energy-absorbing post born of the same parents' unit are connected by backing plate.
Between upper and lower two Loadings On Hemispherical Shells, connector is set.
Described connector is revolving body, is pipe or cylinder.
Described connector is square, or regular pentagon, or regular hexagon.
The central axis of upper and lower two Loadings On Hemispherical Shells coincides.
Between two Loadings On Hemispherical Shells, and the opening of two Loadings On Hemispherical Shells is respectively and between the first panel and the second panel, or two between Loadings On Hemispherical Shell and backing plate, and by welding, riveted joint, bonding or build-in connect.
Described Loadings On Hemispherical Shell, is made up of some pieces of curved bodies, and curved body is overlapping in the same direction each other.
In gap between the upper and lower adjacent two pieces of curved bodies of each Loadings On Hemispherical Shell, add packing material.
The core filled composite material of present invention hemispherical Shell scapus born of the same parents structure in opposite directions, relative to prior art, has the feature that
1, play progressive energy-absorbing advantage, and avoid the higher negative effect that supporting construction is produced of other posts born of the same parents' type internal stress peak value.Its deformation energy-absorbing of spherical shell post born of the same parents' structure does not have threshold value, namely by the impact load will be deformed, and power-deformation characteristics has gradual, can both pass through the deformation of post cell space for different types of shock and vibration load and absorb energy.Meanwhile, deformation endergonic process in, post born of the same parents' structure withstand shocks load internal stress with deformation progressively strengthen, do not have bigger internal stress peak value.
2, it is prone to processing.Comparing the complex space curved surfaces of fabricated structure, Loadings On Hemispherical Shell can adopt the techniques such as punching press, cast, cutting, and the assembling of Loadings On Hemispherical Shell can adopt the modes such as welding, riveted joint, bonding, build-in in opposite directions, it is easy to carries out industrialized production.
Accompanying drawing explanation
Fig. 1 is the first example structure schematic diagram of core filled composite material of the present invention；
Fig. 2 is core filled composite material the second example structure schematic diagram of the present invention；
Fig. 3 is the third example structure schematic diagram of core filled composite material of the present invention；
Fig. 4 is present invention load-displacement curve under impact load.
Detailed description of the invention
In Fig. 1, the core filled composite material of present invention hemispherical Shell scapus born of the same parents structure in opposite directions, including the first panel 1 and the second panel 2, between the first panel 1 and the second panel 2, it is provided with several energy-absorbing post born of the same parents' unit 3, energy-absorbing post born of the same parents' unit 3 is made up of two Loadings On Hemispherical Shells 4 setting up and down, and the opening of two Loadings On Hemispherical Shells 4 being oppositely arranged is connected with the medial surface of the first panel 1 and the second panel 2 respectively, is connected or contacts between two Loadings On Hemispherical Shells 4.Loadings On Hemispherical Shell 4 be shaped as hemispherical or shaped form, such as conventional parabola, quadratic function curve etc.；The central axes of two Loadings On Hemispherical Shells 4, is namely coincided by the axis on Loadings On Hemispherical Shell 4 summit, and Loadings On Hemispherical Shell 4 is connected by curved surface summit or contacts.
First panel 1 and the second panel 2, is metal material, or non-metallic material, such as composite prepared by fiber reinforcement high-molecular organic material；Loadings On Hemispherical Shell 4, is metal material, or non-metallic material, such as fiber reinforcement high-molecular organic material or high-molecular organic material；Loadings On Hemispherical Shell 4 can be thin-walled hollow Loadings On Hemispherical Shell, it is also possible to be thin-walled hollow semicircle body.Same Loadings On Hemispherical Shell 4 can be same radius of curvature, it is also possible to be curvature radius.Between two Loadings On Hemispherical Shells 4, and the opening of two Loadings On Hemispherical Shells 4 is respectively and between the first panel 1 and the second panel 2, and by welding, riveted joint or bonding etc. are attached；Loadings On Hemispherical Shell 4 can also the mode machine-shaping such as punching press or casting overall with the first panel 1 or the second panel 2.
Between gap (hole) between neighbouring two pieces of Loadings On Hemispherical Shells 4, add packing material, it is possible to insert metal, non-metallic filler material, to improve its energy-absorbing usefulness.
It is joined directly together by summit between upper and lower two Loadings On Hemispherical Shells 4 and connects or contact, it is also possible to cushion block 5 is set between two Loadings On Hemispherical Shells 4, be connected by backing plate 5 between upper and lower two Loadings On Hemispherical Shells 4.The structure of backing plate 5 has a variety of, cushion block 5 as depicted is overall structure, two Loadings On Hemispherical Shells 4 up and down of each energy-absorbing post born of the same parents' unit 3 are connected by same backing plate 5, and whole energy-absorbing post born of the same parents' unit 3 connect into an overall structure by this backing plate 5, can improve integrally-built shock-absorbing capacity etc..Cushion block 5 can also be single structure, and namely two Loadings On Hemispherical Shells 4 up and down of each energy-absorbing post born of the same parents' unit 3 are connected by backing plate 5, but the backing plate 5 of each energy-absorbing post born of the same parents' unit 3 is not connected to, and forms split type force structure, each independent stress of energy-absorbing post born of the same parents' unit 3.This backing plate 5 is common tabular, is connected with two Loadings On Hemispherical Shells 4 by modes such as welding, rivet, be bonded or embedded into.Cushion block 5 is set between upper and lower two Loadings On Hemispherical Shells 4, is conducive to locating and machining to install, be conducive to spherical shell in opposite directions to deform energy-absorbing simultaneously.
Being connected as in figure 2 it is shown, can also pass through to arrange connector 6 between upper and lower two Loadings On Hemispherical Shells 4, connector 6 is revolving body, it is possible to symmetrical stress, such as structures such as pipe, round platform or cylinders.Or, connector 6 is regular polygon, such as square (square), or regular pentagon, or regular hexagon etc., is connected with upper and lower two Loadings On Hemispherical Shells 4 by modes such as welding, rivet, be bonded or embedded into.
Under impact loading, the dynamic response process of global shell unit is sufficiently complex, and when xial feed, global shell deformation is divided into three processes: local flattening, axial symmetry indent, formation asymmetric leaf.Global shell dynamic response under impact loading is a complex process, and it includes the problems such as material nonlinearity, geometrical non-linearity and time effect.Global shell structure can rely on Geometrical Bending to the shock wave energy that dissipates under shock.And relative to the structure such as pipe, square tube, its deformation energy-absorbing does not have threshold value, namely by the impact load will be deformed, and power-deformation characteristics has gradual, it is possible to be applied to field more widely.Multiple-layer stacked curved surface multistage energy-absorption type post born of the same parents' structure overcomes the limitation compressing the restriction that range is subject to global shell radius simultaneously preferably.It is thus able to be applied to field more widely.
As it is shown on figure 3, two Loadings On Hemispherical Shells 4 up and down of the present invention, it is possible to adopting the structure of multilamellar curved body superposition, be namely made up of some pieces of curved bodies 41, curved body 41 is overlapping in the same direction each other, forms Loadings On Hemispherical Shell 4；In gap (hole) between the upper and lower adjacent two pieces of curved bodies 41 of each Loadings On Hemispherical Shell 4, add packing material, especially light porous packing material, it is possible to insert metal, non-metallic filler material (such as polyurethane foam, foamed aluminium etc.), to improve its energy-absorbing usefulness.Between upper and lower two Loadings On Hemispherical Shells 4, being connected with each other or be connected by backing plate 5 or connector 6, connector 6 is revolving body, it is possible to symmetrical stress, such as structures such as pipe, round platform or cylinders.Or, connector 6 is regular polygon, such as square (square), or regular pentagon, or regular hexagon etc., is connected with two Loadings On Hemispherical Shells 4 by modes such as welding, rivet, be bonded or embedded into.
As shown in Figure 4, energy-absorbing post born of the same parents' structure (Loadings On Hemispherical Shell is to topmast dagger born of the same parents' structure in opposite directions) of the present invention, load-displacement curve figure under impact load, as can be seen from the figure, its deformation energy-absorbing is a progressive process, being substantially not present load " threshold value " restriction, internal stress peak load is only 5.0KN).
Global shell dynamic response under impact loading is a complex process, and it includes the problems such as material nonlinearity, geometrical non-linearity and time effect.Global shell structure can rely on Geometrical Bending to the shock wave energy that dissipates under shock.And relative to the structure such as pipe, square tube, its deformation energy-absorbing does not have threshold value, namely by the impact load will be deformed, and power-deformation characteristics has gradual, it is possible to be applied to field more widely.Topmast dagger born of the same parents' structure is overcome the limitation compressing the restriction that range is subject to global shell radius by Loadings On Hemispherical Shell simultaneously preferably in opposite directions.It is thus able to be applied to field more widely.
Meanwhile, the structure such as pipe can produce bigger internal stress " peak value ", and this can be delivered to the supporting construction installing core filled composite material, becomes its new " impacts " load, the reduction of energy-obsorbing and damping effect.Topmast dagger born of the same parents' structure then can be greatly lowered peak load by present invention Loadings On Hemispherical Shell in opposite directions.
Finally it should be noted that, above example is only in order to illustrate technical scheme but not restriction technologies scheme, although the present invention has been described in detail by applicant with reference to preferred embodiment, it will be understood by those within the art that, technical scheme is modified or equivalent replacement by those, without deviating from objective and the scope of the technical program, all should be encompassed in the middle of scope of the presently claimed invention.
Claims (10)
1. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions, it is characterized in that: include the first panel (1) and the second panel (2), between the first panel (1) and the second panel (2), it is provided with several energy-absorbings post born of the same parents' unit (3), each energy-absorbing post born of the same parents' unit (3) is made up of two Loadings On Hemispherical Shells (4) setting up and down, the opening of two Loadings On Hemispherical Shells (4) is connected with the medial surface of the first panel (1) and the second panel (2) respectively, is connected or contacts between upper and lower two Loadings On Hemispherical Shells (4).
2. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 1, it is characterised in that: it is provided with cushion block (5) between upper and lower two Loadings On Hemispherical Shells (4), is connected by backing plate (5) between upper and lower two Loadings On Hemispherical Shells (4).
3. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 2, it is characterised in that: described backing plate (5) is overall structure, and two Loadings On Hemispherical Shells (4) up and down of each energy-absorbing post born of the same parents' unit (3) are connected by backing plate (5).
4. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 1, it is characterised in that: between upper and lower two Loadings On Hemispherical Shells (4), connector (6) is set.
5. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 4, it is characterised in that: described connector (6) is revolving body.
6. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 4, it is characterised in that: described connector (6) is square, or regular pentagon, or regular hexagon.
7. according to claim 1-6 arbitrary described in the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions, it is characterised in that: the central axis of upper and lower two Loadings On Hemispherical Shells (4) coincides.
8. according to claim 1-6 arbitrary described in the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions, it is characterized in that: between two Loadings On Hemispherical Shells (4), and the opening of two Loadings On Hemispherical Shells (4) is respectively and between the first panel (1) and the second panel (2), or between two Loadings On Hemispherical Shells (4) and backing plate (5), by welding, rivet, bond or build-in connection.
9. according to claim 1 to 6 arbitrary described in the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions, it is characterised in that: described Loadings On Hemispherical Shell (4), be made up of some pieces of curved bodies (41), overlapping in the same direction between curved body (41).
10. the core filled composite material of hemispherical Shell scapus born of the same parents structure in opposite directions according to claim 9, it is characterised in that: in the gap between the upper and lower adjacent two pieces of curved bodies (41) of each Loadings On Hemispherical Shell (4), add packing material.
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| CN107100268B (en) * | 2017-04-10 | 2019-01-11 | 东南大学 | A kind of space lattice material based on curved bar cell element |
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| CN112324827A (en) * | 2020-10-30 | 2021-02-05 | 西北工业大学 | Double-layer pyramid type light vibration reduction metamaterial lattice structure |
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| CN114623317A (en) * | 2020-12-11 | 2022-06-14 | 上海微电子装备（集团）股份有限公司 | Periodic structure, heat insulation device and wafer bonding device |
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| CN113085282B (en) * | 2021-04-06 | 2023-06-02 | 深圳市仙姿生物科技有限公司 | Synchronous self-adjusting composite film capable of preventing layering tearing |
| CN113685472A (en) * | 2021-08-10 | 2021-11-23 | 西安交通大学 | Multistable pressure-torsion composite energy absorption structure |
| CN114441082A (en) * | 2022-01-05 | 2022-05-06 | 中国人民解放军国防科技大学 | Omnidirectional explosion air shock wave energy passive measurement device and measurement method |
| CN114441082B (en) * | 2022-01-05 | 2024-04-19 | 中国人民解放军国防科技大学 | Omnidirectional explosion air impact wave energy passive measurement device and measurement method |
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