CN107843136A - A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing - Google Patents

A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing Download PDF

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Publication number
CN107843136A
CN107843136A CN201710911273.5A CN201710911273A CN107843136A CN 107843136 A CN107843136 A CN 107843136A CN 201710911273 A CN201710911273 A CN 201710911273A CN 107843136 A CN107843136 A CN 107843136A
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dot matrix
storage device
phase
energy storage
material manufacturing
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CN201710911273.5A
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Inventor
周浩
郭霖
张啸雨
苗建印
向艳超
姜超
曾惠忠
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Beijing Institute of Spacecraft System Engineering
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Beijing Institute of Spacecraft System Engineering
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Priority to CN201710911273.5A priority Critical patent/CN107843136A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/021—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material and the heat-exchanging means being enclosed in one container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30—Process control
    • B22F10/36—Process control of energy beam parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y80/00—Products made by additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Powder Metallurgy (AREA)

Abstract

The present invention relates to a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing, belong to spacecraft lightweight multifunction structure technical field.Sandwich of the present invention is the integral structure being prepared using increasing material manufacturing technique, and outside is housing, and inside is designed to three-dimensional net structure, realizes the light-weight design of phase-change energy storage device, compared with traditional structure loss of weight more than 60%；Three-dimensional net structure is formed in spatial translation using two kinds of repeat units of sparse dot matrix cell element and fine and close dot matrix cell element of specific structure, can avoid structure collapses occur at the top of phase-change energy storage device.The present invention carries out integrated molding using increases material manufacturing technology, in the absence of strength problem caused by welding, possesses excellent mechanical property；And the preparation technology has the advantages of accuracy of manufacture height and short cycle, greatly improves manufacture efficiency, is had a good application prospect in terms of the phase-change energy storage device structure design in the fields such as space flight, aviation, the energy and precision instrument.

Description

A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing
Technical field
The present invention relates to a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing, belong to spacecraft lightweight Multifunction structure technical field.
Background technology
The precision equipment species such as camera, antenna is more on spacecraft, and the temperature environment requirement of normal work is more harsh, phase transformation The main function of energy storage device is to carry out temperature control to payload equipment, utilizes the phase transformation material of filling inside apparatus structure Material, heat is absorbed or discharged by phase transformation to realize the relative thermostatic control to equipment.
Traditional phase-change energy storage device structure is manufactured using machining, the shortcomings that weight weight is present, is seriously govern depth The payload function of the field spacecrafts such as sky detection and performance boost, and need to realize that structure connects by way of welding Connect, intensity or fatigue problem, and the hidden danger of thermal control refrigerant leakage in welding position often be present.
The content of the invention
In order to make up the deficiency of traditional phase-change energy storage device structure, it is an object of the invention to provide one kind based on increasing material system The phase-change energy storage device dot matrix sandwich made, the structure meet increasing material manufacturing process constraint, are the heating integrated structure of machine, structure The more traditional phase-change energy storage device structure of weight significantly mitigates, and in the absence of strength problem caused by welding, in spacecraft light weight Change multifunction structure field to have a good application prospect.
The purpose of the present invention is achieved through the following technical solutions.
A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing, the dot matrix sandwich are using increasing material The integral structure that manufacturing process is prepared, outside is housing, and inside is three-dimensional net structure；
The housing is a rectangular parallelepiped structure, realizes and is sealed outside the dot matrix sandwich；Work is machined with housing Skill hole and fill hole, and the inner mold face seamed edge to housing and outer mold surface seamed edge, fabrication hole and fill hole respectively and carry out chamfering, come Reduce the stress concentration at structural key position, avoid producing Strength Failure；
The three-dimensional net structure is in spatial translation by two kinds of repeat units of sparse dot matrix cell element and fine and close dot matrix cell element Arrangement form；Sparse dot matrix cell element exists in the sparse dot-matrix array of enclosure interior spatial translation arrangement form, fine and close dot matrix cell element Enclosure interior spatial translation arrangement form densification dot-matrix array；Wherein, sparse dot matrix cell element and fine and close dot matrix cell element are by eight What root cylindrical rod piece was formed intersects at a point to rectangular pyramid structure, one end of eight cylindrical rod pieces, will wherein four cylinders Four end points of the shape rod member other end connect to form a rectangle, by four of other four cylindrical rod piece other ends End points connects also one rectangle of formation.
Width, height, the thickness of housing are designated as W, H, T respectively, wherein, width and height are in hundred millimeter magnitudes, thickness In ten millimeter magnitudes, the preferred 10mm~30mm of thickness；Sparse dot matrix cell element is in three orthogonal directions (the i.e. width of housing, height And thickness direction) design size be D1、D2And D3, fine and close dot matrix cell element is d in the design size of three orthogonal directions1、d2With d3, and d1=D1/ 2, d2=D2/ 2, d3=D3/2；Filled by sparse dot matrix cell element the sparse dot-matrix array region formed width, Highly, thickness is respectively W1、H1、T1；The width in the fine and close dot-matrix array region formed, height, thickness are filled by fine and close dot matrix cell element Degree is respectively W2、H2、T2；
Diameter 0.3mm≤Φ≤1mm of cylindrical rod piece, wall thickness 0.3mm≤t≤1mm of housing, and Φ≤t, to cylinder The restriction of shape rod member diameter and thickness of shell, it is on the one hand to ensure good increasing material manufacturing quality, because when size is less than During 0.3mm, the fault in material of metal laser selective melting shaping is more, larger to Effect on Mechanical Properties, can not ensure device knot The uniformity of structure performance；On the other hand it is to ensure the lightweight performance of apparatus structure and larger volume, is more than because working as During 1mm, structural strength nargin is too high, lightweight poor performance, and interior porosity reduces, and apparatus structure volume reduces.
For sparse dot-matrix array region：W1=W- Φ, H1=H- Φ, T1=T- Φ, sparse dot-matrix array region is at three The size of orthogonal direction is smaller Φ in the size of three orthogonal directions than housing, is to ensure the sparse dot matrix of increasing material manufacturing structure The outline of cell element filling region is just without departing from shell structure appearance and size, because cylindrical rod piece diameter and being not zero.
For fine and close dot-matrix array region：For W2=W- Φ, H2=(n+0.25) × D1, T2=T- Φ, n are positive integer, excellent Elect the positive integer between 1~5 as.The design of the area size of fine and close dot matrix cell element filling be in order to realize fine and close dot-matrix array with The seamless connection of sparse dot-matrix array, cantilever rod member is avoided the occurrence of, and due to the office in manufacturing process caused by cantilever rod member Portion caves in, and the post processing cleaning failed with inside configuration fifth wheel is difficult, and n is generally less than equal to 5, is excessive in order to reduce the number of plies Caused weight increase.
Preferably, D1=D2=D3=(T- Φ)/2, d1=d2=d3=D1/ 2=D2/ 2=D3/ 2, make thickness of shell direction Only two layers sparse dot matrix cell element or fine and close dot matrix cell element, because in existing increasing material manufacturing precision process constraints Under, the lightweight better performances of this double layer design, there are higher voidage and volumetric capacity, while reduce rod member due to manufacture The thermal stress or military service load of process cause strut buckling problem.
The dot matrix sandwich selects metal material, preferably AlSi10Mg aluminium alloys, ensure that excellent mechanical property And heat conductivility, meet the multi-functional requirement of spacecraft lightweight.
The dot matrix sandwich is melted and molded technology using selective laser and prepared, and selective laser is melted and molded technique Parameter setting is as follows：Laser power 340W~380W, sweep speed 1000mm/s~1500mm/s, filling line spacing 0.15mm~ 0.25mm, heat energy metric density 1.00J/mm2~2.00J/mm2.The technology compares other increases material manufacturing technologies, is more suitable for hundred millis The labyrinth shaping of metrical scale, formed precision are higher.
The chamfer radius of housing outer mold surface seamed edge are 0.3mm~0.5mm, the chamfer radius of inner mold face seamed edge for 0.5mm~ 1.0mm, fabrication hole and the chamfering radius of curvature for filling hole are 0.3mm~0.5mm, to reduce stress collection of the structure at seamed edge In, ensure structural strength.
Beneficial effect：
Dot matrix sandwich of the present invention is the heating integrated knot of weldless machine realized based on increases material manufacturing technology Structure, in the absence of strength problem caused by welding, possesses excellent mechanical property；Enclosure interior is designed to three-dimensional net structure, real The light-weight design of existing phase-change energy storage device, can be compared with traditional structure loss of weight more than 60%；By the repetition list of two kinds of specific structures Member forms three-dimensional net structure, avoids phase-change energy storage device top structure in manufacturing process and caves in；By single to two kinds of repetitions Elemental size is adjusted, and realizes seamless spliced between two kinds of repeat units, avoids the occurrence of cantilever rod member and inside configuration fifth wheel Post processing cleaning it is difficult.Dot matrix sandwich form of the present invention is complicated, and conventional fabrication processes can not meet, using increasing material Manufacturing technology carries out integrated molding, has the accuracy of manufacture high and the advantages of the cycle is short, greatly improves manufacture efficiency, space flight, Had a good application prospect in terms of the phase-change energy storage device structure design in the fields such as aviation, the energy and precision instrument.
Brief description of the drawings
Fig. 1 is the structural representation of sparse dot matrix cell element.
Fig. 2 is the structural representation of fine and close dot matrix cell element.
Fig. 3 is the phase-change energy storage device dot matrix sandwich interior three-dimensional network structure of the present invention based on increasing material manufacturing Structural representation.
Fig. 4 is the structural representation of the phase-change energy storage device dot matrix sandwich housing of the present invention based on increasing material manufacturing Figure.
Wherein, the sparse dot matrix cell elements of 1-, 2- densification dot matrix cell elements, the sparse dot-matrix arrays of 3-, 4- densification dot-matrix arrays, 5- shells Body.
Embodiment
The present invention is further elaborated with reference to the accompanying drawings and detailed description.
A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing, the dot matrix sandwich are using increasing material The integral structure that manufacturing process is prepared, outside is housing 5, and inside is three-dimensional net structure；
The effect of the housing 5 is to realize the sealing outside the dot matrix sandwich, and housing 5 is a cuboid knot Structure, its width, height, thickness are respectively W=243mm, H=167mm, T=15mm, and (i.e. AlSi10Mg aluminium closes the wall thickness of housing 5 The thickness of golden plate material) t=0.4mm, as shown in Figure 4；
Fabrication hole is machined with housing 5 and fills hole, fabrication hole internal diameter φ 4.5mm, external diameter φ 6.5mm and length 4.5mm, fill hole internal diameter φ 3.5mm, external diameter φ 6.5mm and length 4.5mm；Respectively to the inner mold face seamed edge of housing 5 and outer Type face seamed edge, fabrication hole and fill hole and carry out chamfering, the chamfer radius of outer mold surface seamed edge be 0.5mm, inner mold face seamed edge Angular radius is 0.8mm, and fabrication hole and the chamfering radius of curvature for filling hole are 0.5mm, and chamfer design is to reduce structural key The stress concentration at position, avoid producing Strength Failure；
The three-dimensional net structure is to be put down by 2 two kinds of repeat units of sparse dot matrix cell element 1 and fine and close dot matrix cell element in space Move arrangement form；Wherein, sparse dot matrix cell element 1 and fine and close dot matrix cell element 2 be by eight cylindrical rod pieces form to four Pyramidal structure, one end of eight cylindrical rod pieces intersect at a point, by four end points of the wherein four cylindrical rod piece other ends Connect to form a rectangle, four end points of other four cylindrical rod piece other ends are connected and also form one Rectangle, as depicted in figs. 1 and 2；
Sparse dot matrix cell element 1 is in the design size of three orthogonal directions (i.e. the width of housing 5, height and thickness direction) D1=D2=D3=(T- Φ)/2=7.3mm, a diameter of 0.4mm of cylindrical rod piece；Sparse dot matrix cell element 1 is empty in the inside of housing 5 Between translate the sparse dot-matrix array 3 of arrangement form, sparse dot-matrix array peak width, the height formed is filled by sparse dot matrix cell element 1 Degree, thickness are respectively W1=242.6mm, H1=166.6mm, T1=14.6mm, the design of sparse dot-matrix array area size are main It is to ensure the outline of the sparse filling region of dot matrix cell element 1 of increasing material manufacturing structure just without departing from the construction profile of housing 5 Size, as shown in Figure 3；
Fine and close dot matrix cell element 2 is in the design size of three orthogonal directions (i.e. the width of housing 5, height and thickness direction) d1=d2=d3=D1/ 2=3.65mm, a diameter of 0.4mm of cylindrical rod piece；Fine and close dot matrix cell element 2 is in the inner space of housing 5 Translate arrangement form densification dot-matrix array 4, filled by fine and close dot matrix cell element 2 the fine and close dot-matrix array peak width formed, height, Thickness is respectively W2=242.6mm, H2=9.125mm, T2=14.6mm, the design of fine and close dot-matrix array area size be in order to The seamless spliced of fine and close dot-matrix array and sparse dot-matrix array is realized, avoids the occurrence of cantilever rod member, and because cantilever rod member is led The post processing cleaning of partial collapse failure and inside configuration fifth wheel in the manufacturing process of cause is difficult, as shown in Figure 3；
The material of phase-change energy storage device dot matrix sandwich described in the present embodiment is AlSi10Mg aluminium alloys, and the alloy has Good mechanical property and heat conductivility, meet the multi-functional requirement of spacecraft lightweight；And it is fused into using selective laser Phase-change energy storage device dot matrix sandwich of the type technology described in by AlSi10Mg aluminium alloy processing cost embodiments, moulding process ginseng Number sets as follows：Laser power is 370W, sweep speed 1500mm/s, filling line spacing 0.19mm, heat energy metric density 1.30J/ mm2。
The phase-change energy storage device dot matrix sandwich prepared by the present embodiment is carried out using Patran/Nastran softwares Finite element dynamics are calculated, and housing 5 and cylindrical rod piece simulated with shell unit and beam element respectively, unit size 1mm~ 8mm scopes, the boundary condition of FEM model is the clamped constraint of individual node at model center, is asked using inertia method for releasing Stress of the phase-change energy storage device dot matrix sandwich under the effect of 0.3MPa inner pressuring loads is solved, result of calculation shows maximum stress For 68.1MPa, the yield strength 160Mpa much smaller than AlSi10Mg, there is enough margins of safety, meet space flight requirement； In addition, the actual weight of the phase-change energy storage device dot matrix sandwich is 121g, and traditional phase-change accumulation energy of identical appearance size Apparatus structure weight is 269g, and 65% is up to compared with traditional structure loss of weight.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention. Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's Within protection domain.

Claims (9)

  1. A kind of 1. phase-change energy storage device dot matrix sandwich based on increasing material manufacturing, it is characterised in that：The dot matrix sandwich It is the integral structure being prepared using increasing material manufacturing technique, outside is housing (5), and inside is three-dimensional net structure；
    The housing (5) is a rectangular parallelepiped structure, and fabrication hole is machined with housing (5) and fills hole；
    The three-dimensional net structure is to be put down by (2) two kinds of repeat units of sparse dot matrix cell element (1) and fine and close dot matrix cell element in space Move arrangement form；Wherein, sparse dot matrix cell element (1) and fine and close dot matrix cell element (2) are made up of eight cylindrical rod pieces To rectangular pyramid structure, one end of eight cylindrical rod pieces intersects at a point, by four of the wherein four cylindrical rod piece other ends End points is connected to form a rectangle, and four end points of other four cylindrical rod piece other ends are connected to form one Individual rectangle.
  2. 2. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 1, its feature exist In：Respectively to the inner mold face seamed edge of housing (5), outer mold surface seamed edge, fabrication hole and fill hole carry out chamfering；Wherein, housing (5) The chamfer radius of outer mold surface seamed edge are 0.3mm~0.5mm, and the chamfer radius of housing (5) inner mold face seamed edge are 0.5mm~1.0mm, Fabrication hole on housing (5) and the chamfering radius of curvature for filling hole are 0.3mm~0.5mm.
  3. 3. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 1, its feature exist In：Diameter 0.3mm≤Φ≤1mm of cylindrical rod piece, wall thickness 0.3mm≤t≤1mm of housing (5), and Φ≤t.
  4. 4. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 1, its feature exist In：The material of the dot matrix sandwich is AlSi10Mg aluminium alloys.
  5. 5. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 1, its feature exist In：Housing (5) is designated as W, H, T respectively in the width of three orthogonal directions, height, thickness, sparse dot matrix cell element (1) at three just The design size for handing over direction is D1、D2And D3, fine and close dot matrix cell element (2) is d in the design size of three orthogonal directions1、d2And d3, Width, height, the thickness in the sparse dot-matrix array region formed by the filling of sparse dot matrix cell element (1) are respectively W1、H1、T1, by causing Width, height, the thickness in the fine and close dot-matrix array region that closely spaced lattice cell element (2) filling is formed are respectively W2、H2、T2；
    Then, W1=W- Φ, H1=H- Φ, T1=T- Φ, W2=W- Φ, H2=(n+0.25) × D1, T2=T- Φ, d1=D1/ 2, d2 =D2/ 2, d3=D3/2；Wherein, n is positive integer.
  6. 6. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 5, its feature exist In：D1=D2=D3=(T- Φ)/2, d1=d2=d3=D1/ 2=D2/ 2=D3/2。
  7. 7. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 5, its feature exist In：N is 1,2,3,4 or 5.
  8. 8. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing according to claim 5, its feature exist In：For the width and height of housing (5) in hundred millimeter magnitudes, thickness is 10mm~30mm.
  9. 9. a kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing as described in any one of claim 1 to 8 Preparation method, it is characterised in that：Technology is melted and molded using selective laser and prepares the dot matrix sandwich；
    Wherein, it is as follows to be melted and molded technological parameter setting for selective laser：Laser power 340W~380W, sweep speed 1000mm/s ~1500mm/s, filling line spacing 0.15mm~0.25mm, heat energy metric density 1.00J/mm2~2.00J/mm2。
CN201710911273.5A 2017-09-29 2017-09-29 A kind of phase-change energy storage device dot matrix sandwich based on increasing material manufacturing Pending CN107843136A (en)

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CN109163212A (en) * 2018-09-28 2019-01-08 西北工业大学 Change unit cell size with transition zone is to pyramid gradient lattice structure
CN109317677A (en) * 2018-10-16 2019-02-12 北京星航机电装备有限公司 A kind of honeycomb sandwich construction prepared by increasing material manufacturing method
CN109365818A (en) * 2018-12-25 2019-02-22 鑫精合激光科技发展（北京）有限公司 A kind of selective laser thawing forming method and device for porous interlayer honeycomb
CN109578796A (en) * 2018-11-22 2019-04-05 西北工业大学 Change unit cell size gradient lattice structure with transition zone
CN109955486A (en) * 2019-03-14 2019-07-02 浙江大学 It is a kind of based on dot matrixed with sparse compression processing structural model 3D printing method
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CN111255838A (en) * 2020-01-17 2020-06-09 重庆大学 Hierarchical lattice structure
CN111895015A (en) * 2020-07-03 2020-11-06 重庆大学 Variant gradient lattice structure based on additive manufacturing
CN112743087A (en) * 2020-12-28 2021-05-04 北京航星机器制造有限公司 TA15 titanium alloy lattice structure, lattice sandwich structure and manufacturing method
CN112861252A (en) * 2020-12-24 2021-05-28 中国航空工业集团公司成都飞机设计研究所 Self-defined lattice standard unit and lattice structure
CN114279250A (en) * 2022-03-07 2022-04-05 中国长江三峡集团有限公司 Phase change heat accumulator
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CN115339170A (en) * 2022-08-21 2022-11-15 重庆交通大学 Close-packed hexagonal lattice sandwich structure

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