CN115284687A - Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption - Google Patents

Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption Download PDF

Info

Publication number
CN115284687A
CN115284687A CN202210725118.5A CN202210725118A CN115284687A CN 115284687 A CN115284687 A CN 115284687A CN 202210725118 A CN202210725118 A CN 202210725118A CN 115284687 A CN115284687 A CN 115284687A
Authority
CN
China
Prior art keywords
lattice
bearing
wide
angle
sandwich structure
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.)
Pending
Application number
CN202210725118.5A
Other languages
Chinese (zh)
Inventor
韩剑
孙士勇
牛斌
盛贤君
杨睿
郭东明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN202210725118.5A priority Critical patent/CN115284687A/en
Publication of CN115284687A publication Critical patent/CN115284687A/en
Pending legal-status Critical Current

Links

Images

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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B3/02—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 features of form at particular places, e.g. in edge regions
    • B32B3/08—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 features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • 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
    • B32B3/02—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 features of form at particular places, e.g. in edge regions
    • B32B3/08—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 features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—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 features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a 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
    • 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
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H13/00—Means of attack or defence not otherwise provided for
    • F41H13/0093—Devices generating an electromagnetic pulse, e.g. for disrupting or destroying electronic devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H3/00—Camouflage, i.e. means or methods for concealment or disguise
    • 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
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • 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
    • B32B2262/10—Inorganic fibres
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/212—Electromagnetic interference shielding
    • 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
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

The invention provides a composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption. The invention comprises three dielectric slabs and 2 lattice core layers clamped in the three dielectric slabs, wherein the lattice core layers comprise a plurality of lattice cores which are arranged in an array mode, the lattice cores have preset Z-direction bearing strength, the configuration of the lattice cores is changed according to specific bearing requirements, a conducting layer is adhered to the lower surface of a bottom dielectric slab, a lossy periodic microstructure array structure is loaded on the surfaces of a middle dielectric slab and an upper dielectric slab, and the geometric topology of the middle dielectric slab and the upper dielectric slab is changed according to specific wave-absorbing requirements. The invention meets the structural requirements of weight reduction, bearing and wave absorption at the same time. The structure can realize bearing, weight reduction and controllable failure modes, and can realize a stable wide-angle-range wave absorbing function.

Description

Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption
Technical Field
The invention relates to the field of multifunctional composite material structures, in particular to a composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption.
Background
With the development of informatization and intellectualization of modern wars, the performance requirements of light weight, high strength and strong stealth are provided for combat equipment such as aircrafts, and the design of the aircrafts not only needs to reduce the self weight as much as possible on the basis of ensuring the bearing strength, but also needs to obtain the electromagnetic stealth characteristics of wide frequency domain and wide angle domain. Taking a cabin structural member of a high-speed aircraft as an example, on the premise of meeting the pneumatic strength, the endurance capacity of the structure is improved by 1500 kilometers when the weight of the structure is reduced by 100 kilograms; if it has a wide angular range (0) ° ～60 ° ) Strong stealth (more than 80% of electromagnetic wave absorption rate) and battlefield survivalThe capability will be greatly improved. Therefore, how to realize the integrated design of light bearing and electromagnetic stealth of the key structural member is one of the key problems which need to be solved urgently in the development of high-performance aircrafts.
To solve the above problems, domestic and foreign scholars have developed a series of researches and proposed various solutions. For example: a novel scheme to enhance booth electric magnetic wave transmission and compressive properties of PMI foam and with structure, yan Rayle et al, northwest industry university propose foam sandwich structure with wave absorbing property, and realize bearing/stealth integrated design, but the wave absorbing property of the structure is only 0 ° ～40 ° The range is kept stable, and the wide-angle-domain characteristic is not provided; the publication No. CN110920158A discloses a resin column reinforced broadband wave-absorbing/bearing composite material and a preparation method thereof, which introduces a resin column into a wave-absorbing laminated structure to form a wave-absorbing/bearing composite structure, but does not consider the compressive strength and the structure wave-absorbing characteristics under different incidence angles; the publication No. CN113013635A discloses a honeycomb loss structure for mechanically bearing ultra-wideband wave absorption and a preparation method thereof, which adopts a loss layer mixed with materials such as carbon nano tubes and the like to realize the wave absorption function while ensuring the bearing of a composite material honeycomb structure, but the wave absorption characteristic is only 0 ° ～40 ° The stability is kept within the range.
From the comparative examples above it can be found that: the current structural design mostly focuses on the combination of the bearing and wave absorbing functions, and the research on the wide-angle-range wave absorbing characteristic, light bearing and structural function reliability is lacked. Based on the structure, the multifunctional composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption is invented.
Disclosure of Invention
According to the technical problem, the composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption is provided. The technical means adopted by the invention are as follows:
the utility model provides a light bears and inhale combined material dot matrix sandwich structure of integration of ripples in wide angle territory, includes at least three-layer dielectric plate and 2 layers of dot matrix sandwich layer of centre gripping in three-layer dielectric plate, the dot matrix sandwich layer includes a plurality of dot matrix cores that the array was arranged, the dot matrix core has predetermined Z to bear the weight of intensity, changes its configuration according to concrete bearing needs, and bottom dielectric plate lower surface adhesion conducting layer, intermediate dielectric plate and upper dielectric plate surface are loaded with and are consumed periodic microstructure array structure, change its geometric topology according to concrete ripples needs.
Further, the lattice core comprises a pyramid type, an X-type and a Kagome structure.
Further, the 2-layer lattice core layer is any one of uniform, symmetrical, and hierarchical structure.
Further, the materials of the lattice core comprise carbon fiber reinforced composite materials, aramid fiber reinforced composite materials, basalt fiber reinforced composite materials, PLA, nylon, ABS and other materials.
Further, the material of the dielectric plate comprises carbon fiber reinforced composite material, aramid fiber reinforced composite material, basalt fiber reinforced composite material, PLA, nylon, ABS and other materials.
Further, the consumable periodic microstructure array comprises a microstructure array loaded with a chip resistor, a microstructure array prepared by spraying and printing conductive ink and a microstructure array prepared by carbon fibers.
Further, the geometrical topology of the microstructure comprises a square ring shape, a circular ring shape, a double-side ring shape and a cross shape.
Further, the conductive layer comprises a conductive copper tape, a conductive silver tape, a conductive ink jet printing prepared conductive layer or a conductive layer prepared from carbon fiber.
Further, the composite sandwich structure is not limited to three-layer dielectric slab and two-layer lattice core structure, including multilayer structures derived therefrom.
The composite material lattice sandwich structure integrating light bearing and wide-angle-domain wave absorption is oriented to the structural requirements of weight reduction, bearing and wave absorption. The invention has the advantages that: the bonding position of the consumed periodic array of the structure is not easy to fall off, and the wave absorbing function is not influenced when the upper bearing is damaged, so that the wave absorbing reliability is realized; through the mechanical design of the lattice core structure, the realization is realizedThe structure bears and reduces weight, and has controllable failure mode and bearing reliability; the wave-absorbing characteristic of the structure has wide angle domain characteristic and is 0 to different polarized electromagnetic waves ° ～60 ° The stability is kept within the range. Therefore, the invention is based on the wave-absorbing technical principle, combines the advantages of light weight and high strength of the composite material lattice sandwich structure, realizes the multifunctional composite material lattice sandwich structure which integrates weight reduction, mechanical bearing, controllable failure mode and stable wide-angle-range wave absorption, and plays a role in the military fields of stealth, electromagnetic space countermeasure, radar reconnaissance and the like and the civil fields of wave absorption, interference resistance and the like of buildings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a symmetrical double-layer pyramid lattice sandwich structure in an embodiment of the present invention.
Fig. 2 is a schematic diagram of a periodic symmetric double-layer pyramid lattice sandwich structure in an embodiment of the present invention.
Fig. 3 is a force-displacement curve of a double-layer pyramid lattice structure under a compressive load in an embodiment of the present invention.
FIG. 4 shows a periodic microstructure array cell according to an embodiment of the present invention.
FIG. 5 is a schematic diagram of a wave-absorbing curve of TE polarized waves in an embodiment of the present invention.
FIG. 6 is a schematic diagram of a wave absorption curve of a TM polarized wave in an embodiment of the present invention.
In the figure: 1. a dielectric plate; 2. dot matrix cores; 3. a lossy periodic microstructure; 4. a chip resistor; 5. copper.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The embodiment of the invention discloses a composite lattice sandwich structure integrating light bearing and wide-angle-domain wave absorption, which comprises 3 layers of dielectric slabs and 2 layers of lattice core layers clamped in the 3 layers of dielectric slabs, wherein each lattice core layer comprises a plurality of lattice cores which are arranged in an array, each lattice core has preset Z-direction bearing strength, a metal film and other conducting layers are adhered to the lower surface of a bottom dielectric slab, a periodic microstructure array structure is loaded on the surfaces of an intermediate dielectric slab and an upper dielectric slab, and the geometric topology of the periodic microstructure array structure is changed according to specific wave absorption requirements.
The lattice core comprises a pyramid structure, an X-type structure, a Kagome structure and the like. The pyramid core body structure is a four-diagonal-rod supporting structure simulating a pyramid; the X-shaped core body structure is a structure that four inclined rods are crossed at a central node; the Kagome core structure is a structure with three inclined rods crossing a central node.
The n-1 layer lattice core layer layout is any one of uniform, symmetrical and hierarchical structure. Wherein the uniform structure is that each layer of core body has the same topological configuration; the symmetrical structure is that the topological configuration of the core is consistent and symmetrical about the middle dielectric slab; the hierarchical structure is an atypical periodic structure formed by increasing or reducing the cores of different layers in equal proportion. By changing the layout and the size parameters of the core layer, the failure mode of the lattice sandwich structure can be predicted and controlled.
The materials of the lattice core comprise carbon fiber reinforced composite materials, aramid fiber reinforced composite materials, basalt fiber reinforced composite materials, PLA, nylon, ABS and the like.
The material of the dielectric plate comprises carbon fiber reinforced composite material, aramid fiber reinforced composite material, basalt fiber reinforced composite material, PLA, nylon, ABS and other materials.
The consumable periodic microstructure array comprises a microstructure array of a loading patch resistor, a microstructure array prepared by jet printing of conductive ink and a microstructure array prepared by carbon fibers.
The geometrical topology of the microstructure comprises a square ring shape, a circular ring shape, a double-square ring shape and a cross shape, and the geometrical topology can be changed according to specific wave-absorbing requirements during structure design.
The conducting layer comprises a conducting copper tape, a conducting silver tape and a conducting layer prepared by conducting ink jet printing or carbon fiber.
The lattice sandwich structure is not limited to a three-layer dielectric slab and a two-layer core structure, and includes a multilayer structure derived therefrom.
The structure is a multifunctional composite material lattice sandwich structure which integrates weight reduction, mechanical bearing, controllable failure mode and stable wide-angle-range wave absorption. The wave-absorbing characteristic has high incident angle stability and electromagnetic wave polarization stability.
Example 1
As shown in fig. 1, the light-weight bearing and wide-angle-range wave-absorbing integrated composite lattice sandwich structure disclosed in this embodiment includes three dielectric slabs and 2 lattice core layers clamped in the three dielectric slabs, the lattice core between the dielectric slabs is pyramid-shaped, and the 2 lattice core layers are arranged by using the middle dielectric slab as a symmetrical surface, wherein the upper lattice core includes four inclined columns, a support range formed by connecting the columns to the upper dielectric slab is larger than a support range formed by connecting the columns to the lower dielectric slab, and the four columns have the same outward preset inclination angle. The lower core is a symmetrical structure of the upper core relative to the dielectric slab. FIG. 2 is a diagram showing a wave-absorbing model of a periodic symmetric double-layer pyramid lattice sandwich structure, where θ is an incident angle and φ is a polarization angle.
The cell load analysis was performed using the ABAQUS software. In this embodiment, the lattice core is made of nylon and has a density of 0.95g/cm 3 The elastic modulus is 856MPa, and the software simulation results are as follows: the maximum bearing strength is 19.22MPa, the modulus of the structure in the z direction is 270.25MPa, and the load displacement curve is shown in figure 3 and has two bearing force peaks. This is because of the arrangementWhen the dielectric plate on the uppermost layer is subjected to downward flat pressing, the upper layer structure is firstly failed, and the lower layer structure is not influenced, so that the bearing is continuously kept; when the upper layer fails completely, the lower layer begins to fail. Therefore, the design of the double-layer lattice sandwich structure has controllable failure modes and reliable bearing performance.
As shown in fig. 4, in the present embodiment, the lossy periodic microstructure array is a square-ring microstructure array with chip resistors (SMD 0402 package, 150 Ω), 8 chip resistors are respectively attached to four sides of the square-ring structure, and the square-ring structure is made of copper (with a conductivity of 5.8 × 10) 7 s/m), in the figure, w =1,l =16.
The designed multifunctional lattice sandwich structure has the material dielectric constant set to be 3.6; and the lower surface of the bottom dielectric plate is pasted with a conductive copper adhesive tape to realize the electromagnetic shielding function.
The HFSS software is used for carrying out electromagnetic characteristic simulation analysis, and the structure presents broadband and strong wave absorption characteristics under the condition of vertical incidence of electromagnetic waves. As shown in fig. 5, the frequency band range with the wave-absorbing rate of more than 80% is 1.5GHz to 6.7GHz, the fractional bandwidth is 126.8%, and part of the L-band, all the S-band, and part of the C-band are covered.
As shown in fig. 6, under the oblique incidence condition of the E-polarized and TM-polarized electromagnetic waves, the broadband and strong wave-absorbing characteristics of the structure exhibit high incident angle stability, and the wave-absorbing frequency band thereof remains stable in the range of 0 ° to 60 °.
The structure of the invention is based on the principle of wave-absorbing technology, combines the advantages of light weight and high strength of the composite material lattice sandwich structure, and realizes the multifunctional composite material lattice sandwich structure which integrates weight reduction, mechanical bearing, controllable failure mode and stable wide-angle-range wave absorption. The structure can play a role in the military fields of stealth, electromagnetic space countermeasure, radar reconnaissance and the like and the civil fields of wave absorption, interference resistance and the like of buildings.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. The utility model provides a light bears and inhale combined material dot matrix sandwich structure of integration of ripples in wide angle territory which characterized in that, includes at least three-layer dielectric slab and 2 layers of dot matrix sandwich layer of centre gripping in three-layer dielectric slab, the dot matrix sandwich layer includes a plurality of dot matrix cores that the array was arranged, the dot matrix core has predetermined Z to bear the weight of the intensity, changes its configuration according to concrete bearing demand, and the electrically conductive picture layer of bottom dielectric slab lower surface adhesion, and the surface of middle dielectric slab and upper dielectric slab is loaded with and is consumed periodic microstructure array structure, changes its geometric topology according to concrete ripples demand.
2. The composite lattice sandwich structure integrating light weight bearing and wide angle domain wave absorption according to claim 1, wherein the lattice core comprises pyramid, X-and Kagome structures.
3. The composite lattice sandwich structure integrating light load bearing and wide-angle-region wave absorption according to claim 1 or 2, wherein 2 lattice core layers are in any one of uniform, symmetrical and hierarchical structures.
4. The composite lattice sandwich structure integrating light bearing and wide-angle-region wave absorption according to claim 1 or 2, wherein the material of the lattice core comprises carbon fiber reinforced composite material, aramid fiber composite material, basalt fiber reinforced composite material, PLA, nylon and ABS.
5. The light-weight bearing and wide-angle-region wave-absorbing integrated composite material lattice sandwich structure according to claim 1 or 2, wherein the material of the dielectric slab comprises carbon fiber reinforced composite material, aramid fiber composite material, basalt fiber reinforced composite material, PLA, nylon and ABS.
6. The composite lattice sandwich structure integrating light bearing and wide-angle-range wave absorption according to claim 1, wherein the consumable periodic microstructure array comprises a microstructure array loaded with a chip resistor, a microstructure array prepared by jet printing conductive ink, and a microstructure array prepared by carbon fiber.
7. The composite lattice sandwich structure integrating light bearing and wide-angle-range wave absorption according to claim 5, wherein the geometrical topology of the microstructure comprises a square ring shape, a circular ring shape, a double-square ring shape and a cross shape.
8. The composite lattice sandwich structure integrating light bearing and wide-angle-range wave absorption according to claim 1 or 2, wherein the conductive layer comprises a conductive copper tape, a conductive silver tape, a conductive ink jet printing preparation or a conductive layer made of carbon fiber.
9. The composite lattice sandwich structure integrating light weight bearing and wide angle wave absorption according to claim 1 or 2, wherein the lattice sandwich structure is not limited to three-layer dielectric slab and two-layer core structure, and includes multi-layer structure derived therefrom.
CN202210725118.5A 2022-06-23 2022-06-23 Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption Pending CN115284687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210725118.5A CN115284687A (en) 2022-06-23 2022-06-23 Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210725118.5A CN115284687A (en) 2022-06-23 2022-06-23 Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption

Publications (1)

Publication Number Publication Date
CN115284687A true CN115284687A (en) 2022-11-04

Family

ID=83821097

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210725118.5A Pending CN115284687A (en) 2022-06-23 2022-06-23 Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption

Country Status (1)

Country Link
CN (1) CN115284687A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090282773A1 (en) * 2006-10-27 2009-11-19 University Of Virginia Patent Foundation Manufacture of Lattice Truss Structures from Monolithic Materials
CN102303427A (en) * 2011-07-12 2012-01-04 北京航空航天大学 Dual-interlayer symmetrical multi-pyramid configuration three-dimensional integrally-braid lattice composite material and preparation method thereof
US20140246608A1 (en) * 2011-03-31 2014-09-04 Kuang-Chi Innovative Technology Ltd. Wave-absorbing metamaterial
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
CN112876271A (en) * 2021-01-29 2021-06-01 中国人民解放军国防科技大学 Wave-absorbing ceramic wing rudder type component based on lossy high-temperature electromagnetic periodic structure and preparation method thereof
CN112918025A (en) * 2021-01-29 2021-06-08 中国人民解放军国防科技大学 Ablation type heat-insulation-prevention wave-absorption integrated composite material and preparation method thereof
CN215040968U (en) * 2021-02-03 2021-12-07 中国科学院上海硅酸盐研究所 Structure/stealth integrated composite material and aircraft skin or ship deck structure
CN114466581A (en) * 2022-02-17 2022-05-10 西北工业大学 Multi-stage corrugated wave-absorbing material and preparation method and application thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090282773A1 (en) * 2006-10-27 2009-11-19 University Of Virginia Patent Foundation Manufacture of Lattice Truss Structures from Monolithic Materials
US20140246608A1 (en) * 2011-03-31 2014-09-04 Kuang-Chi Innovative Technology Ltd. Wave-absorbing metamaterial
CN102303427A (en) * 2011-07-12 2012-01-04 北京航空航天大学 Dual-interlayer symmetrical multi-pyramid configuration three-dimensional integrally-braid lattice composite material 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
CN112876271A (en) * 2021-01-29 2021-06-01 中国人民解放军国防科技大学 Wave-absorbing ceramic wing rudder type component based on lossy high-temperature electromagnetic periodic structure and preparation method thereof
CN112918025A (en) * 2021-01-29 2021-06-08 中国人民解放军国防科技大学 Ablation type heat-insulation-prevention wave-absorption integrated composite material and preparation method thereof
CN215040968U (en) * 2021-02-03 2021-12-07 中国科学院上海硅酸盐研究所 Structure/stealth integrated composite material and aircraft skin or ship deck structure
CN114466581A (en) * 2022-02-17 2022-05-10 西北工业大学 Multi-stage corrugated wave-absorbing material and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN110504553B (en) Multilayer ultra-wideband wave absorber compounded by electric loss material and magnetic material
KR101779773B1 (en) Wind turbine blades
US10959356B2 (en) Panel for reflective broadband electromagnetic shielding
CA2616621C (en) Dual function composite system and method of making same
CN104582458A (en) Wave absorbing metamaterial
Yao et al. Design and fabrication of microstrip antennas integrated in three dimensional orthogonal woven composites
JPS59176035A (en) Fiber composite material
KR20070000483A (en) Radio wave absorber and radio wave absorber manufacturing method
JPH04312003A (en) Network antenna used especially in outer space
US11888226B2 (en) Radar-absorbing material having honeycomb sandwich structure and stealth structure using same
CN102593604A (en) New-type light metamaterial and antenna housing
KR101383658B1 (en) A Microwave Absorbing Structure composed of a dielectric lossy sheet and method thereof
JP2019102665A (en) Electromagnetic wave absorber
CN115284687A (en) Composite material lattice sandwich structure integrating light bearing and wide-angle-range wave absorption
Bi et al. Sandwich nanoarchitectonics of heterogenous CB/CNTs honeycomb composite for impedance matching design and microwave absorption
Yang et al. Mechanical reinforced lightweight multifunctional metastructure with ultrabroadband microwave absorption
CN115603058A (en) Three-dimensional metamaterial based on honeycomb structure and preparation method thereof
CN215040968U (en) Structure/stealth integrated composite material and aircraft skin or ship deck structure
JP2000031684A (en) Radio wave absorber
CN112606992B (en) Integrated aircraft fuselage with skin antenna
KR102558314B1 (en) Composite Panel having an Electromagnetic Wave Absorption Function and Structure including the Same
CN2799229Y (en) Stitched lattice composite material sandwich board
Baek et al. A lightweight, flexible, and polarization-insensitive microwave absorbing honeycomb core using conductive losses in printed periodic pattern
JPH09162590A (en) Radio wave absorbent
CN213907319U (en) Multilayer coupling wave absorber for outer space severe environment

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