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2700 results about "Honeycomb structure" patented technology

Honeycomb structures are natural or man-made structures that have the geometry of a honeycomb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The geometry of honeycomb structures can vary widely but the common feature of all such structures is an array of hollow cells formed between thin vertical walls. The cells are often columnar and hexagonal in shape. A honeycomb shaped structure provides a material with minimal density and relative high out-of-plane compression properties and out-of-plane shear properties.

Pickleball paddle

A pickleball paddle includes a handle, and a paddle head coupled with the handle. The paddle head includes a first outer faceplate, a second outer faceplate, and a core arranged between the first outer faceplate and the second outer faceplate. The core includes a honeycomb structure having multiple cells, with each of the multiple cells defined by honeycomb cell walls, and each of the honeycomb cell walls having a height. A majority of the multiple cells of the honeycomb structure are filled with a polymer, the polymer does not extend past the height of the honeycomb cell walls, and the polymer does not expand when exposed to heat.
Owner:SPARTUS LLC

An integrated integrated carbonaceous honeycomb architecture material and a preparation method thereof

An integrated carbon honeycomb structure material and its preparation method are disclosed, belonging to the field of carbon materials technology. Based on a co-sacrificial template low-temperature pyrolysis strategy, the target material can be obtained through three main steps: preparation of a metal salt-colloidal microsphere template precursor, precursor pressing and molding, and subsequent calcination and carbonization. This technology has the characteristics and advantages of simple preparation process, regular and controllable macroscopic structure of the sample (such as shape, area, and thickness), rich and tunable chemical composition, and three-dimensional interconnection of graphene carbon matrix. It has great application potential in many fields such as electrochemical energy storage, catalysis, gas separation, adsorption, and electromagnetic shielding.
Owner:TIANJIN UNIV

Moistureproof cable

The invention relates to the technical field of power transmission, in particular to a moisture-proof cable which sequentially comprises a conductive wire core, a gradient buffer layer, a dynamic sealing layer, a flexible supporting layer and a self-repairing sheath from inside to outside. A gradient buffer layer; the dynamic sealing layer is of a split type sealing structure formed by an outer ring surface sealing lip and an inner ring surface static sealing belt, the outer ring surface sealing lip is formed by embedding a polytetrafluoroethylene fiber reinforcing layer in a silicone rubber matrix, and the surface of the outer ring surface sealing lip is coated with a humidity response type graphene coating; the flexible supporting layer is formed by spirally winding a nickel-titanium alloy belt, and bionic fish scales are welded to the surface of the nickel-titanium alloy belt; the self-repairing sheath is characterized in that a hexagonal honeycomb structure is molded on the outer layer, hydroxyl-terminated polysiloxane and a platinum catalyst are contained in an A-type microcapsule, and modified epoxy resin is contained in a B-type microcapsule. The moisture-proof cable shows excellent corrosion resistance, moisture resistance and self-repairing capability in a humid environment, and can maintain good performance when subjected to external physical impact.
Owner:SHAANXI LONGITUDINAL CABLE GRP CO LTD

Hydrogel capable of absorbing grease as well as preparation method and application of hydrogel

The preparation method comprises the following steps: mixing polysaccharide gum with water, carrying out wet ultrafine grinding to obtain an ultrafine polysaccharide gum aqueous solution, and uniformly infiltrating the polysaccharide gum into cellulose or derivatives thereof by adopting high-shear mixing to form micelles; and promoting the micelles to form a honeycomb structure through microwave vacuum drying, and finally spraying ultrapure water atomized by high pressure to the honeycomb micelles and drying to obtain the hydrogel for absorbing grease. The water absorption capacity of the prepared hydrogel reaches 100 times or above, the storage modulus is 1350 Pa or above, grease can be efficiently absorbed, and the hydrogel has wide development prospects in the field of weight-reducing medicine or food.
Owner:SHANGHAI PANDA MEDICAL CO LTD +1

Integrated carbonaceous honeycomb framework lithium metal composite negative electrode and preparation method thereof

The invention relates to an integrated carbonaceous honeycomb framework lithium metal composite negative electrode and a preparation method thereof, and belongs to the technical field of lithium metal batteries, the integrated carbonaceous honeycomb framework lithium metal composite negative electrode is formed by depositing lithium metal in an integrated carbonaceous honeycomb framework host, and the host is constructed by adopting metal salt-colloidal crystal microsphere template precursor preparation, compression molding and controllable carbonization processes. The structure has a highly ordered three-dimensional integrated macroporous skeleton, and can realize rapid transmission and uniform electric field distribution of lithium ions and electrons, so that dendrite-free homogeneous lithium deposition under ultrahigh capacity is realized, volume expansion is remarkably inhibited, and the reversible stability of lithium metal deposition / stripping is improved. The invention provides an efficient and stable negative electrode solution for a high-energy-density lithium battery, and has an important application prospect.
Owner:TIANJIN UNIV

Sports paddle

An apparatus and a method are provided for a sports paddle for pickleball, tennis, smashball, ping pong, or racquetball. The sports paddle comprises a planar portion defining opposing flat surfaces for striking a ball and a handle portion for grasping in a hand. A skin layer encloses the planar portion and the handle portion. Rounded edges are disposed around the planar portion and the handle portion. The planar portion may comprise a core material surrounded by a rigid portion. The rigid portion may comprise 20-24 lb. foam while the core material is a honeycomb structured material. A synthetic or polymeric grip is wrapped around the handle portion to provide stability and firmness for a player. A binding secures the grip to a neck of the planar portion. An end cap placed at an end of the handle provides support and protection of the paddle.
Owner:JUNKINS MITCH

Heat dissipation optimization method and system for graphene semiconductor

The invention provides a heat dissipation optimization method and system for a graphene semiconductor, and relates to the technical field of graphene semiconductors, and the method comprises the steps: determining a honeycomb structure based on a graphene semiconductor material which has a heat radiation coefficient identifier and a heat conduction coefficient identifier; configuring a plurality of heat dissipation flow lines corresponding to different heat dissipation modes; configuring a plurality of heat dissipation distribution maps corresponding to different heat dissipation modes; analyzing the influence of the band gap on the thermal radiation characteristic, and determining a first semiconductor characteristic influence index; analyzing the influence of the band gap on the heat conduction characteristic, and determining a second semiconductor characteristic influence index; and establishing a heat dissipation performance evaluation model, and performing heat dissipation iterative optimization in combination with the plurality of heat dissipation flow lines and the plurality of heat dissipation distribution maps. The technical problem that stable heat dissipation performance cannot be provided in diversified application scenes due to the fact that the heat dissipation design in the prior art is difficult to flexibly adapt to the requirements of different heat dissipation modes is solved.
Owner:SHENZHEN THIN CONDUCTOR TECH CO LTD

Aerogel-improved honeycomb polyurethane heat insulation module

The invention provides an aerogel improved honeycomb polyurethane heat insulation module. The aerogel improved honeycomb polyurethane heat insulation module comprises a polyurethane foam core, a heat insulation rod and an insulation box body. The heat insulation rod is arranged in the polyurethane foam core and comprises an outer shell defined by a film with a structure protection function, and aerogel is filled in the outer shell. The polyurethane foam core is of a honeycomb structure and comprises the peripheral edge of the polyurethane foam core and a plurality of wall faces extending in the longitudinal direction. A plurality of adjacently arranged honeycomb holes are formed in the plurality of wall surfaces along a plane array extending transversely; the polyurethane foam core surrounds the side face of the heat insulation rod. The insulation box body surrounds the outer surface of the polyurethane foam core, and the polyurethane foam core top face insulation box body and the polyurethane foam core bottom face insulation box body completely cover the polyurethane foam core and the polyurethane foam core side face periphery insulation box body. According to the technical scheme, the heat leakage loss of liquefied natural gas in the storage and transportation process can be reduced according to the higher heat insulation requirement of a heat insulation module in an existing LNG containment system and the material physical property based on polyurethane and silicon dioxide aerogel.
Owner:HUDONG ZHONGHUA SHIPBUILDINGGROUP

Multi-degree-of-freedom morphing wing based on zero Poisson's ratio superstructure

PendingCN119117259AImprove smoothnessHas zero Poisson's ratio characteristicsWing adjustmentsLeading edgeMorphing wing
The invention discloses a multi-degree-of-freedom morphing wing based on a zero poisson ratio superstructure, and belongs to the technical field of morphing wings. The wing comprises a front edge section, a wing body and a rear edge section which are sequentially connected, the front edge section comprises an inner side front edge plate, a middle front edge plate and an outer side front edge plate, the wing body comprises a plurality of zero-Poisson-ratio honeycomb structures, each zero-Poisson-ratio honeycomb structure is formed by arraying a plurality of zero-Poisson-ratio unit cell cubic structures, and the adjacent zero-Poisson-ratio unit cell cubic structures share a connecting rod; the rear edge section comprises an inner side rear edge plate, a middle rear edge plate and an outer side rear edge plate; the inner-side front edge plate and the inner-side rear edge plate, the middle front edge plate and the middle rear edge plate, and the outer-side front edge plate and the outer-side rear edge plate are respectively connected through zero-Poisson-ratio honeycomb structures which are arranged along the chord length direction of the wing; the two sides of the middle front edge plate are connected with the inner side front edge plate and the outer side front edge plate through zero-Poisson-ratio honeycomb structures arranged in the extension direction of the wing correspondingly, and the two sides of the middle rear edge plate are connected with the inner side rear edge plate and the outer side rear edge plate through zero-Poisson-ratio honeycomb structures arranged in the extension direction of the wing correspondingly. The wing has four deformation functions of variable elongation, chord length, dihedral angle and camber, so that the aircraft can adapt to different flight environments and tasks.
Owner:HEBEI UNIV OF TECH

Mute floor

The utility model discloses a mute floor which comprises a surface treatment layer, a protection layer, a decoration layer, a first carrier, a first buffer layer and a second carrier. The surface treatment layer is arranged on one side of the protection layer, the decoration layer is arranged on the other side of the protection layer, the first carrier is arranged between the decoration layer and the first buffer layer, the first buffer layer is arranged between the first carrier and the second carrier, and the first buffer layer is of a porous structure and / or a net structure. A buffer groove is formed in at least one side face of the first buffer layer and extends to the two ends of the side face. By arranging the floor with the first buffer layer with the porous and / or honeycomb structure, noise is reflected and refracted for multiple times in the porous and / or honeycomb structure, so that sound is attenuated, a sound wave propagation path is prolonged, and the effect of more effectively reducing noise propagation is achieved.
Owner:CHANGZHOU BEMATE HOME TECH CO LTD

Method and device for acquiring effective electromagnetic parameters of honeycomb structure

The invention provides an effective electromagnetic parameter acquisition method and device of a honeycomb structure, and relates to the technical field of electromagnetism. Firstly, a reflection coefficient data set and an effective electromagnetic parameter data set are constructed, a preset forward neural network is trained through the reflection coefficient data set, and a preset reverse neural network is trained through the effective electromagnetic parameter data set. Inputting a target parameter of a honeycomb structure to be measured, predicting a reflection coefficient through the trained forward neural network, and constructing a frequency-reflection coefficient curve based on the relationship between the reflection coefficient and the frequency; the frequency-reflection coefficient curve is processed through the feature vector matrix, and a feature curve of the honeycomb structure to be measured is obtained; and inputting the characteristic curve into the trained reverse neural network to obtain effective electromagnetic parameters of the honeycomb structure to be detected. The method does not need to depend on the traditional quasi-static hypothesis, can quickly and accurately obtain the effective electromagnetic parameters, and remarkably improves the obtaining efficiency and precision.
Owner:HUBEI UNIV OF TECH

Energy absorption reinforced honeycomb structure with Poisson ratio adjustable in positive and negative directions and design method

The invention discloses an energy-absorbing reinforced honeycomb structure with the Poisson's ratio capable of being adjusted positively and negatively and a design method, and relates to the field of honeycomb structures. Two horizontal outer ribs and four inclined outer ribs of the honeycomb structure form a hexagon; the two ends of the first arc-shaped inner rib are connected with the left upper vertex and the left lower vertex of the hexagon and are concave towards the left vertex of the hexagon; the second arc-shaped inner rib is connected with the right upper vertex and the right lower vertex of the hexagon and is concave towards the right vertex of the hexagon; two ends of one horizontal inner rib are respectively connected with the left vertex of the hexagon and the first arc-shaped inner rib, and two ends of the other horizontal inner rib are respectively connected with the right vertex of the hexagon and the second arc-shaped inner rib; and the circular ring is embedded in the convex parts of the two arc-shaped inner ribs. According to the honeycomb structure, the positive Poisson's ratio honeycomb and the negative Poisson's ratio honeycomb are fused through the two horizontal inner ribs, so that the inner ribs and the outer ribs are mutually balanced, the circular ring design is added, and the structural strength is improved; through the thickness parameter design of the inner ribs and the outer ribs, flexible transformation of the positive Poisson's ratio or the negative Poisson's ratio is achieved on the premise that light weight and high strength are guaranteed.
Owner:HUAQIAO UNIVERSITY +1

Roadway negative Poisson's ratio gradient energy absorption supporting device

The invention relates to the field of roadway surrounding rock supporting in underground engineering, in particular to a roadway negative Poisson's ratio gradient energy-absorbing supporting device which comprises a negative Poisson's ratio gradient energy-absorbing structure, compared with a conventional chiral negative Poisson's ratio structure, deformation regularity and controllability are enhanced, the shape of a connecting rod piece is changed in combination with the special working condition of a coal mine, and the supporting effect of the roadway negative Poisson's ratio gradient energy-absorbing supporting device is improved. The connecting rod piece is a double-spiral connecting rod piece; compared with a traditional hexagonal honeycomb structure, the defect that the honeycomb structure is too fast in failure after being pressed is overcome; and meanwhile, the concave deformation advantage and the chiral ring node rigidity advantage are combined. Gradient design can be adopted in a two-dimensional structure and a three-dimensional structure, through non-uniform distribution of spatial parameters, the bottleneck of a traditional structure in energy absorption efficiency and environmental adaptability is broken through, the structure is particularly suitable for a non-uniform load scene of coal mine underground engineering, the strength of a certain area can be intensively enhanced, the deformation mode of the structure can be changed, and the energy absorption efficiency is improved. And the structure can be customized according to different application scene requirements.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Wideband side wall graphical wave-absorbing honeycomb structure

The invention belongs to the technical field of electronic materials, and particularly relates to a broadband side wall graphical wave-absorbing honeycomb structure. Through the design mode that the strip-shaped resistive films are arranged at equal intervals according to the width and form the included angle with the honeycomb aperture Z direction to be fully distributed on the inner walls of the honeycomb units in parallel, the spiral-like structure design of resistive film stripes is finally formed on the inner walls of the honeycomb units, and the anisotropy of the effective dielectric constant of the wave-absorbing honeycomb structure is effectively improved; the polarization of the structure is insensitive; in addition, during processing of the structural design, the influence of pattern dislocation caused by process precision is extremely small. And the spiral-like structure design enables alternating impedance to be formed along the aperture direction, so that more times of reflection and absorption are formed on the inner walls of the honeycomb holes due to the arrangement angle of the strip-shaped resistive film after incident waves are incident, the impedance matching with air in a broadband range is effectively improved, and the 2-18GHz ultra-wideband wave-absorbing performance is realized.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Housing for flow-conducting components

A method for forming a housing for a flow-conducting component includes forming at least two functional regions of the housing having different material properties using at least one of radiation-induced melting and solidification of a build material and a process gas jet. Each functional region of the housing may be generated from a different construction material, and at least one functional layer may be formed with a reduced weight structure such as a honeycomb structure.
Owner:KSB SE & CO KGAA

River bank slope protection for cofferdam construction and construction method thereof

The invention relates to the technical field of river bank protection, in particular to a river bank slope protection for cofferdam construction and a construction method thereof. S2, construction of a near-water area structure; s3, construction of a far water area structure; s4, ecological enhancement; triple optimization of river bank protection is achieved through dynamic water level monitoring and modular design, a double-layer reinforced concrete and elastic sealant structure is adopted in a near-water area, the compressive strength is improved by 20%, the crack width is smaller than or equal to 0.2 mm, and material waste is reduced by 15% in cooperation with dynamic width adjustment (+ / -2 m); the mold bag concrete slope protection is combined with an atomization spraying system, the anti-scouring capacity reaches 5 m / (m.s), the vegetation coverage rate is larger than or equal to 80% within 3 months, and the water and soil loss rate is reduced by 70%; the modular honeycomb structure inflation assembly efficiency is improved by 40%, the transportation cost is reduced by 50%, the distributed sensors achieve structure displacement / pressure three-level early warning, the operation and maintenance cost is reduced by 70%, the overall service life is prolonged by more than 5 years, and an ecological-engineering collaborative protection system is formed.
Owner:JIANGSU LEIWEI CONSTRUCT ENG CO LTD

Combined type multi-cell structure filling threshold beam assembly

The invention relates to a combined type multi-cell structure filling threshold beam assembly. Comprising two C-shaped thin plates and a combined multi-cell structure filling structure. The combined type multi-cell structure filling structure comprises a front end different-plane vertex reinforced multi-cell honeycomb, a rear end coplanar vertex reinforced multi-cell honeycomb and a connecting plate; the front-end different-plane vertex reinforced multi-cell honeycomb comprises a plurality of axially-serially-connected reinforced cell elements which are distributed along the axial direction of the doorsill beam and have orthohexagonal sections; the rear-end coplanar vertex reinforced multi-cell honeycomb comprises a plurality of thin-wall cell elements which are transversely distributed along the threshold beam and have regular hexagonal sections, the plurality of thin-wall cell elements form a coplanar multi-cell honeycomb structure by overlapping boundaries, and the inner sections of the regular hexagons are circular, so that arc-shaped reinforced cell walls are formed at the vertex positions of the regular hexagons; and the radiuses of the internal circles from the middle to the two sides are gradually increased. Large collision energy is transmitted and absorbed when a vehicle is subjected to front-face small-overlap offset collision and side-face collision, and the impact resistance of the threshold beam structure is improved.
Owner:NANJING UNIV OF SCI & TECH

Light-weight honeycomb structure shoe mold printing method based on SLM technology

The invention discloses a lightweight honeycomb structure shoe mold printing method based on an SLM process, and the method specifically comprises the following steps: S1, building a three-dimensional model of a shoe mold, and carrying out honeycomb embedding on the three-dimensional model of the shoe mold to obtain a lightweight three-dimensional shoe mold model; s2, the lightweight three-dimensional shoe mold model is uploaded to Msgics software for slicing processing and scanning strategy planning, and the lightweight three-dimensional shoe mold model is uploaded to SLM forming equipment; s3, after parameter setting is carried out on the SLM forming equipment, entity printing of the three-dimensional shoe mold model is carried out according to a scanning strategy; the invention relates to the technical field of additive manufacturing. According to the light-weight honeycomb structure shoe mold printing method based on the SLM process, through arrangement of honeycomb holes, the material consumption is reduced, meanwhile, light-weight design of the shoe mold is achieved, through edge enhancement design of the honeycomb structure, the bearing performance, the elastic modulus and the yield strength of the shoe mold are effectively improved, and the printing quality of the shoe mold is improved. And the high-efficiency preparation targets of light weight, high performance and low cost of the shoe mold are achieved.
Owner:DONGGUAN UNIV OF TECH

Ruthenium nano-cluster / trinickel disulfide heterojunction composite material as well as preparation method and application thereof

The invention relates to a ruthenium nano-cluster / trinickel disulfide heterojunction composite material as well as a preparation method and application thereof. According to the composite material, foamed nickel serves as a substrate material, a Ni3S2 nanosheet array grows on the surface of the substrate material in situ, and ruthenium nanoclusters are anchored on the surface of the Ni3S2 nanosheet array to form the heterojunction composite material. According to the preparation method, the Ni3S2 nanosheet array grows on the foamed nickel substrate in situ, then the composite material with the ruthenium nanocluster anchored on the Ni3S2 surface is prepared through a chemical etching method, and the preparation method is simple, relatively low in cost and suitable for large-scale production; the prepared heterojunction composite material forms a nanosheet array structure and shows a honeycomb structure, so that the catalyst has a relatively large specific surface area, provides more active sites for catalytic reaction, is high in catalytic activity, and can be used as a catalyst applied to hydrogen evolution and oxygen evolution of water electrolysis reaction in electro-catalysis.
Owner:SUZHOU UNIV OF SCI & TECH

Negative Poisson's ratio cell with embedded symmetrical broken subcell structure

The invention relates to the technical field of mechanical metamaterials, in particular to a negative Poisson's ratio cell element with an embedded symmetrical broken subcell structure, which comprises a concave hexagonal main body, the concave hexagonal main body comprises two horizontal cell walls and inclined cell walls arranged at two ends of the two horizontal cell walls, and the central points of the two inclined cell walls are bent towards one side close to the central points of the horizontal cell walls; the number of the bent wall rods is two, and the two bent wall rods are symmetrically arranged in the inwards-concave hexagonal body. The inherent contradiction that the stretching performance must be sacrificed when the rigidity of a traditional concave honeycomb structure is improved is successfully solved, and the negative Poisson's ratio effect and the energy absorption capacity of the structure can be further improved while the structural rigidity is enhanced.
Owner:NANJING TECH UNIV

Bionic honeycomb-like structure sandwich panel with impact resistance and preparation method thereof

The invention belongs to the field of bionic composite material structure engineering, and discloses a bionic honeycomb-like structure sandwich panel with impact resistance and a preparation method thereof, and the bionic honeycomb-like structure sandwich panel with impact resistance comprises an upper skin, a middle honeycomb-like structure interlayer and a lower skin which are sequentially arranged from top to bottom; the interlayer of the middle honeycomb-like structure is composed of a plurality of honeycomb units in the shape of imitated chrysanthemum stone suture lines. The sandwich layer of a honeycomb-like structure is arranged according to the shape characteristics of the bionic chrysanthemum stone suture line, the honeycomb wall of each honeycomb unit in the shape of the bionic chrysanthemum stone suture line is in a secondary wave shape, the overall strength of the sandwich board can be effectively improved, and effective absorption of energy and damage tolerance are achieved; the hollow characteristic of the honeycomb-like structure can reduce the dead weight of the sandwich panel, the sandwich panel is endowed with the characteristic of light weight, and the sandwich panel has a good development prospect in the field of impact resistance protection.
Owner:JILIN UNIVERSITY +1

Wave-absorbing honeycomb impregnation device

The invention provides a wave-absorbing honeycomb impregnation device, comprising: a liquid storage tank, a liquid storage cavity arranged in the liquid storage tank, the liquid storage cavity being used for holding an impregnation liquid containing a wave-absorbing agent; the hook assembly is arranged on the inner wall of the liquid storage cavity; the hook assembly comprises a plurality of hooks, and at least part of the hooks are different in height; and the honeycomb structural member can be hung on the hooks with different heights, so that the soaking depth of the honeycomb structural member in the impregnation liquid can be adjusted. According to the wave-absorbing honeycomb impregnation device, the impregnation depth of the honeycomb structural part in the impregnation liquid can be adjusted, the honeycomb structural part can be integrally impregnated, and the honeycomb structural part can be partially impregnated, so that different impregnation requirements can be met.
Owner:CHENGDU YONGXI POLYMER MATERIAL TECH CO LTD

Copper surface micro-etching coarsening solution for fine circuit as well as preparation method and application of copper surface micro-etching coarsening solution

The invention discloses a copper surface micro-etching coarsening solution for a fine circuit as well as a preparation method and application of the copper surface micro-etching coarsening solution, and relates to the technical field of printed circuit board manufacturing. The copper surface micro-etching coarsening solution for the fine circuit is prepared from, by mass concentration, 60 g / L to 100 g / L of sulfuric acid, 40 g / L to 60 g / L of hydrogen peroxide, 0.5 g / L to 2 g / L of zinc sulfate, 10 g / L to 30 g / L of copper ions, 0.5 g / L to 1 g / L of pyridine heterocycle-containing Schiff base, 10 g / L to 100 g / L of ethyl alcohol, 1 g / L to 3 g / L of 2-mercaptobenzothiazole, 1 g / L to 5 g / L of methionine and 1 g / L to 5 g / L of polyacrylamide. According to the copper surface micro-etching coarsening solution, the 2-mercaptobenzothiazole and the methionine in the copper surface micro-etching coarsening solution can enable the copper surface to form a honeycomb structure under the low micro-etching amount, the zinc sulfate and the pyridine heterocyclic ring-containing Schiff base can form a composite film layer with copper ions on the surface of the honeycomb structure, and the interlayer binding force is improved.
Owner:SHENZHEN BANMING SCI & TECH CO LTD

Novel three-dimensional cylindrical negative stiffness energy absorption structure and design method thereof

The invention discloses a novel three-dimensional cylindrical negative stiffness energy absorption structure and a design method thereof.The novel three-dimensional cylindrical negative stiffness energy absorption structure comprises an energy absorption structure body, the energy absorption structure body is composed of an inner cylindrical face, an outer cylindrical face and an internal periodic structure, and the internal periodic structure is provided with novel biaxial negative stiffness honeycomb unit structures distributed periodically; and each novel biaxial negative stiffness honeycomb unit structure is provided with an upper bent beam structure and a lower bent beam structure. Compared with a traditional hexagonal honeycomb structure, the novel three-dimensional cylindrical negative-stiffness energy absorption structure has better mechanical properties, the energy absorption effect is remarkably improved, good repeatability is achieved, and compared with a traditional two-dimensional negative-stiffness structure, the application range of the three-dimensional cylindrical negative-stiffness energy absorption structure is expanded; the movement requirements of the structure in some aspects are better met, application and popularization are facilitated, and even an assumption is provided for proposing a three-dimensional spherical shell energy absorption structure.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Carbon-based metamaterial electromagnetic wave absorber and preparation method and application thereof

The invention discloses a carbon-based metamaterial electromagnetic wave absorber and a preparation method and application thereof. The wave absorbing body adopts a three-layer composite structure, wherein the bottom layer is a copper plate reflecting layer; the lower layer is of a honeycomb-like structure and is formed by periodically arranging regular octagons and square hollow quadrangular prisms externally connected with the regular octagons, and the adjustable wave absorbing frequency band is achieved by adjusting and controlling the width and height of the hollow cores; the upper layer is of a pointed cone structure, and the impedance matching characteristic is enhanced by optimizing the vertex angle of the regular rectangular pyramid. The wave absorber is made of photosensitive resin, based on the photocuring 3D printing technology, honeycomb-like and pointed cone structures are printed step by step and bonded and combined, and high-precision forming is achieved in combination with parameterized regulation and control. The wave absorber has the advantages of light weight, broadband absorption and adjustable mechanical performance, can be applied to the fields of EMI shielding of electronic equipment, military radar stealth, high-frequency communication protection, electromagnetic environment protection and the like, and remarkably improves the electromagnetic wave absorption and shielding effectiveness through the metamaterial structure design and a multi-component cooperative loss mechanism.
Owner:TONGJI UNIV

Anode module and wet-process electric dust remover thereof

The invention discloses an anode module and a wet-process electric dust remover thereof, relates to the technical field of electric dust removers, and solves the technical problems that in the prior art, the anode module is difficult to comprehensively and effectively clean in a water spraying mode, and the cleaning effect is influenced. Comprising a plurality of first anode tube groups and second anode tube groups which are alternately arranged, each first anode tube group is formed by sequentially welding a plurality of first anode tubes, each second anode tube group is formed by sequentially welding a plurality of second anode tubes, and each second anode tube is welded with the adjacent first anode tube; the first anode tubes and the second anode tubes are the same in structure, the sections of the first anode tubes and the second anode tubes are both of a honeycomb structure, and an upper stabilizing plate and a lower stabilizing plate are jointly welded to the outer tube walls, close to the two ends, of the first anode tubes and the second anode tubes. The surface area of the anode module is effectively increased, the dust removal efficiency of the anode module is improved, and the inner pipe wall of the anode module can be conveniently and comprehensively scraped and sprayed, so that the cleaning effect of the anode module is greatly improved.
Owner:ANHUI DEYUAN ENVIRONMENTAL TECH CO LTD

Dental implant with biological activity and preparation process thereof

The invention relates to the technical field of implants, in particular to a dental implant with biological activity and a preparation process thereof. In order to improve the biological activity of the dental implant, firstly, the surface of a dental implant blank is modified, after a honeycomb structure is generated on the surface of titanium alloy, a chitosan solution is further used for treating the dental implant material, and a chitosan material with positive charges and amino groups is introduced to the surface of the dental implant material, so that the biological activity of the dental implant is improved. The preparation method comprises the following steps: by taking a polyetheretherketone film as a raw material, introducing an aldehyde group, reacting with the polyetheretherketone under ultraviolet light, and introducing nano-hydroxyapatite with biocompatibility into the polyetheretherketone film in the process, thereby ensuring that a gap distance of more than 1nm exists between the dental implant and a natural tooth, and keeping the bone around the implant stable.
Owner:JIANGSU TRAUSIM MEDICAL INSTR

Urban low-altitude traffic ground network point and air channel planning method

The invention belongs to the field of flight network and channel planning, particularly relates to a ground network point and air channel planning method for urban low-altitude traffic, and aims to solve the problems that in an urban traffic scene, flight of a large number of aircrafts is difficult to manage in a standardized manner, and flight trajectories intersect randomly to easily cause aircraft conflicts in a dense flight scene. The method comprises the following steps: setting a plurality of aircraft flight ground base stations based on a honeycomb structure; determining an initial website and an end website; acquiring a website flight path through a path approximation selection algorithm; an air channel planning path is formed by the starting point-initial network point of the aircraft, the network point flight path and the ending network point-ending point of the aircraft; and carrying out flight height layering according to the flight direction in the branch flight path. The air traffic flight system solves the problems that the flight of a large number of aircrafts is difficult to standardize and the flight tracks are crossed randomly to easily cause aircraft conflicts, and is high in flight efficiency, high in flight safety and convenient to manage.
Owner:BEIJING HUACHENG HANGTAI TECHNOLOGY DEVELOPMENT CO LTD

Aerogel structure and battery cell module

The utility model discloses an aerogel structure and a battery cell module, and belongs to the technical field of batteries, and the aerogel structure comprises a frame member, a first electrode, a second electrode, a third electrode and a fourth electrode, the framework component is arranged in the through opening structure and assembled on the frame component, and the framework component forms a honeycomb structure; and an aerogel unit. The framework component with the cavity is arranged, the cavity is filled with air, a part of aerogel is replaced based on the heat insulation effect of the air, under the condition that the low heat conductivity of the whole structure is maintained, the use of the aerogel is reduced so as to reduce the cost, meanwhile, the honeycomb structure has high stability, efficient mechanical performance and excellent load bearing capacity, and the honeycomb structure is suitable for large-scale popularization and application. Normal stress can be borne, and the overall strength of the battery cell module can be improved.
Owner:HEFEI GUOXUAN HIGH TECH POWER ENERGY

Compact phase change heat storage honeycomb structure heterogeneous metal microdroplet interactive printing forming method

The invention discloses a compact phase change heat storage honeycomb structure heterogeneous metal microdroplet interactive printing forming method, and belongs to the field of metal additive manufacturing. According to the method, the characteristic that aluminum alloy and a phase-change material are a solubility gap system is utilized, a micro-droplet interactive printing forming method is adopted, and aluminum alloy micro-droplets and phase-change metal micro-droplet double nozzles are controlled to conduct collaborative printing by designing a honeycomb structure and planning a printing track, so that alternate deposition and space integration of a structural material and the phase-change material are achieved; therefore, the compact honeycomb metal phase change heat storage structure is prepared. Compared with a traditional method, the method has the advantages that high-density integrated printing forming of the aluminum alloy and the phase change metal heterostructure can be achieved without reserving a flow channel, an exhaust hole and a packaging auxiliary structure, the manufacturing process is simplified, meanwhile, the compactness and the overall sealing performance of the heat storage structure are remarkably improved, and the manufacturing cost is reduced. The problem of high-heat-flux heat management in a narrow space is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV +1