CN205203349U - Little truss sandwich structure - Google Patents
Little truss sandwich structure Download PDFInfo
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- CN205203349U CN205203349U CN201521027027.6U CN201521027027U CN205203349U CN 205203349 U CN205203349 U CN 205203349U CN 201521027027 U CN201521027027 U CN 201521027027U CN 205203349 U CN205203349 U CN 205203349U
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Abstract
The utility model provides a little truss sandwich structure, relates to aircraft structural design technical field, and including panel and beam type matrix composition, the beam type matrix composition comprises a plurality of interconnect's unit cell, the mid point of down tube and cross structure's nodical fixed connection in every unit cell, the one end of vertical pole is connected to the other end, two twenty percents of down tube are to be in in the coplanar and the mid point intersects the nodical department at cross structure, the end of down tube and the end fixed connection of vertical pole, plane under the vertical pole perpendicular to cross structure. The utility model provides a little truss sandwich structure simple structure, it is convenient to make, and device stability is high, and safe and reliable for multi -functional type of truss sandwich structure's design provides alternative, is particularly useful for bearing off -plate normal direction compression load, and the unit cell holding capacity is even, superposes on bearing the weight of the orientation, can bear the load of all directions, has stronger bearing capacity and mechanics designability, stability is better, has good adaptability, does not lose its mechanics characteristic.
Description
Technical field
The utility model relates to technical field of aircraft structure design, in particular to the micro-truss sandwich structure of one.
Background technology
Micro-truss sandwich structure is generally made up of upper and lower two-layer panel and middle beam type matrix structure, and upper and lower two-layer panel plays the effect of distractive load, and Main Load is born by the beam type matrix structure of centre.The unit cell of beam type matrix structure is a kind of plane with triangular element of being made up of straight-bar or space structure, axial tension or pressure is born primarily of rod member, thus make full use of the intensity of material, play saving material, alleviate the effect of deadweight and increase rigidity.
The load to weight ratio that micro-truss sandwich structure is generally born perpendicular to panel is higher, but shortcoming also clearly.When applying the load being not orthogonal to panel, or apply uneven load, local rod member bears larger load, local rod member can be caused not carry, another part rod member general buckling, thus the integrated carrying ability of the large micro-truss sandwich structure of macrolesion.
Along with 3D printing technique is day by day perfect, micro-truss sandwich structure has mechanical property in excellent face, outside face, good heat conduction and heat radiation performance and stronger designability as a kind of multifunctional all light structures, receives extensive concern in recent years.And the specific requirement of which kind of micro-truss topographical arrangement scheme which kind of Multifunctional design the most applicable becomes the hot issue of research.
The technical matters needing now solution badly how to design a kind of micro-truss sandwich structure, to make up in above-mentioned prior art the technical defect existed.
Utility model content
The purpose of this utility model is to solve above-mentioned deficiency of the prior art, provides a kind of simple and reasonable, micro-truss sandwich structure with mechanical property in excellent face, outside face, good heat conduction and heat radiation performance and stronger designability.
The purpose of this utility model is achieved through the following technical solutions: a kind of micro-truss sandwich structure, and micro-truss sandwich structure comprises two-layer panel and the beam type matrix structure between two-layer panel, and beam type matrix structure is made up of multiple interconnective unit cell; Each unit cell comprises a cross structure and multiple isometric brace, multiple isometric vertical bar connects and composes, and wherein, the mid point of brace is fixedly connected with the intersection point of cross structure, one end of other end vertical connecting bar; Two straight-bar length of cross structure are equal and mutually vertical and form intersection point in straight-bar mid point intersection; Brace to be in same plane and the point of intersection intersected at cross structure in pairs, and intersection point is the mid point of brace, and the termination of brace is fixedly connected with the termination of vertical bar; Vertical bar is perpendicular to plane belonging to cross structure.
In such scheme preferably, the connection that in beam type matrix structure, every two adjacent unit cells realize between unit cell by the straight-bar sharing vertical bar and connect cross structure.
In above-mentioned either a program preferably, the length of the straight-bar of cross structure is equal with the distance between any two adjacent vertical bars.Ensure that the end points of straight-bar of cross bar just drops on above-mentioned adjacent vertical bar and connects in the plane that forms, guarantee not interfered in the process connected between unit cell.
In above-mentioned either a program preferably, plane belonging to plane belonging to cross structure and panel is parallel to each other.Ensure the accuracy of the position between unit cell in connection procedure in cross bar straight-bar connection procedure.
In above-mentioned either a program preferably, unit cell forms to increase the manufacture of material manufacturing technology.Ensure the stability of single cell structure, further preferably, above-mentioned beam type matrix structure adopts the manufacture of increasing material manufacturing technology to form equally, ensures the structural stability of whole micro-truss sandwich structure.
The beneficial effect of micro-truss sandwich structure provided by the utility model is, structure is simple, easily manufactured, device stability is high, safe and reliable, for the design of multi-functional quasi-truss sandwich structure provides alternatives, be particularly useful for the situation of the outer normal direction clamp load of bearing surface, the power that unit cell can bear is all uniform, therefore upwards superposes in loading side, the load of all directions can be born, there is stronger load-carrying capacity and mechanics designability; Stability is better, is not easy distortion, therefore coordinates special-shaped panel, have good comformability, and do not lose its mechanical characteristic.
Accompanying drawing explanation
Fig. 1 is the structural representation of the preferred embodiment according to micro-truss sandwich structure of the present utility model, and wherein, the unit cell forming beam type matrix structure is two;
Fig. 2 is the structural representation of the unit cell embodiment illustrated in fig. 1 according to micro-truss sandwich structure of the present utility model;
Fig. 3 is the schematic top plan view of single cell structure shown in the Fig. 2 according to micro-truss sandwich structure of the present utility model;
Fig. 4 is the schematic side view of single cell structure shown in the Fig. 2 according to micro-truss sandwich structure of the present utility model;
Fig. 5 is the structural representation of the beam type matrix structure according to micro-truss sandwich structure of the present utility model, and wherein, the unit cell quantity forming beam type matrix structure is four.
Reference numeral:
1-beam type matrix structure, 2-unit cell, 3-cross structure, 4-brace, the vertical bar of 5-, 6-panel.
Detailed description of the invention
The object implemented for making the utility model, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, are further described in more detail the technical scheme in the utility model embodiment.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the utility model part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.
As Figure 1-5, micro-truss sandwich structure that the utility model provides, comprises two-layer panel 6 and the beam type matrix structure 1 between two-layer panel 6, and beam type matrix structure 1 is made up of multiple interconnective unit cell 2; Each unit cell 2 comprises a cross structure 3 and multiple isometric brace 4, multiple isometric vertical bar 5 connects and composes, and wherein, the mid point of brace 4 is fixedly connected with the intersection point of cross structure 3, one end of other end vertical connecting bar 5; Two straight-bar length of cross structure 3 are equal and mutually vertical and form intersection point in straight-bar mid point intersection; Brace 4 to be in same plane and the point of intersection intersected at cross structure 3 in pairs, and intersection point is the mid point of brace 4, and the termination of brace 4 is fixedly connected with the termination of vertical bar 5; Vertical bar 5 is perpendicular to plane belonging to cross structure 3.
In micro-truss sandwich structure that above-mentioned the utility model provides, the connection that in beam type matrix structure 1, every two adjacent described unit cells 2 realize between unit cell 2 by the straight-bar sharing vertical bar 5 and connect cross structure 3.Distance between the length of the straight-bar of cross structure 3 with any two adjacent vertical bars 5 is equal, and the entirety of unit cell 2 is within a square scope.By sharing vertical bar 5, connecting the end points connection of the straight-bar of the cross structure 3 of different unit cell 2 in unit cell 2 connection procedure.Belonging to plane belonging to cross structure 3 and panel 6, plane is parallel to each other.
In micro-truss sandwich structure process that concrete production and application the utility model provides, unit cell 2 forms to increase the manufacture of material manufacturing technology.By the design requirement of beam type matrix structure 1, being production unit with unit cell 2 equally produces beam type matrix structure 1 to increase material manufacturing technology, ensures integraty, the stability of structural entity.
Below by way of observed data, micro-truss sandwich structure that the utility model provides is further described.In single cell structure can design parameters be: montant length L1, montant spacing L2, montant diameter D1, brace diameter D2, cross bar diameter D3, cross bar end points be brace center-point.
Adopt the sandwich plate of quasi-truss sandwich plate and the Kagome layout utilizing the utility model to design during same material to carry out the comparison of concora crush example, from result of calculation, bear identical concora crush load 1N/mm
2time, the interlayer plate hight about 70% of quasi-truss sandwich plate load-carrying capacity more common Kagome layout of load-carrying capacity when density is relatively less than normal of the utility model design.Table 1 is contrast test data.
Table 1
| Configuration | Sandwich plate density (kg/mm 3) | Single order unstability coefficient |
| The utility model sandwich plate | 3.45E-07 | 3.46 |
| Kagome sandwich plate | 3.75E-07 | 2.03 |
The advantage of micro-truss sandwich structure that the utility model provides is, structure is simple, easily manufactured, device stability is high, safe and reliable, for the design of multi-functional quasi-truss sandwich structure provides alternatives, be particularly useful for the situation of the outer normal direction clamp load of bearing surface, the power that unit cell can bear is all uniform, therefore upwards superposes in loading side, the load of all directions can be born, there is stronger load-carrying capacity and mechanics designability; Stability is better, is not easy distortion, therefore coordinates special-shaped panel, have good comformability, and do not lose its mechanical characteristic.
More than be described in detail in conjunction with micro-truss sandwich structure specific embodiment of the present utility model, but be not to restriction of the present utility model, everyly according to technical spirit of the present utility model, technical scope of the present utility model is all belonged to any simple modification made for any of the above embodiments, also it should be noted that, comprise the combination in any between each part mentioned above according to the category of micro-truss sandwich structure technical scheme of the present utility model.
Claims (5)
1. micro-truss sandwich structure, it is characterized in that, described micro-truss sandwich structure comprises two-layer panel (6) and is positioned at the beam type matrix structure (1) between two-layer described panel (6), and described beam type matrix structure (1) is made up of multiple interconnective unit cell (2);
Each described unit cell (2) comprises a cross structure (3) and multiple isometric brace (4), multiple isometric vertical bar (5) connects and composes, wherein, the mid point of described brace (4) is fixedly connected with the intersection point of described cross structure (3), and the other end connects one end of described vertical bar (5);
Two straight-bar length of described cross structure (3) are equal and mutually vertical and form intersection point in described straight-bar mid point intersection;
Described brace (4) to be in same plane and the point of intersection intersected in described cross structure (3) in pairs, described intersection point is the mid point of described brace (4), and the termination of described brace (4) is fixedly connected with the termination of described vertical bar (5);
Described vertical bar (5) is perpendicular to the affiliated plane of described cross structure (3).
2. micro-truss sandwich structure as claimed in claim 1, it is characterized in that, the connection that in described beam type matrix structure (1), every two adjacent described unit cells (2) realize between described unit cell (2) by the described straight-bar sharing described vertical bar (5) and connect described cross structure (3).
3. micro-truss sandwich structure as claimed in claim 1, is characterized in that, the distance between the length of the described straight-bar of described cross structure (3) with any two adjacent vertical bars (5) is equal.
4. the micro-truss sandwich structure as described in claim 1 or 3, is characterized in that, plane belonging to described cross structure (3) is parallel to each other with the affiliated plane of described panel (6).
5. micro-truss sandwich structure as claimed in claim 1, is characterized in that, described unit cell (2) forms to increase the manufacture of material manufacturing technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027027.6U CN205203349U (en) | 2015-12-10 | 2015-12-10 | Little truss sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521027027.6U CN205203349U (en) | 2015-12-10 | 2015-12-10 | Little truss sandwich structure |
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| Publication Number | Publication Date |
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| CN205203349U true CN205203349U (en) | 2016-05-04 |
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| CN201521027027.6U Active CN205203349U (en) | 2015-12-10 | 2015-12-10 | Little truss sandwich structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824634A (en) * | 2018-06-14 | 2018-11-16 | 西北工业大学 | A kind of lightweight space lattice structure |
| CN111942565A (en) * | 2020-08-05 | 2020-11-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Beam type lattice structure and micro-truss structure with same |
-
2015
- 2015-12-10 CN CN201521027027.6U patent/CN205203349U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108824634A (en) * | 2018-06-14 | 2018-11-16 | 西北工业大学 | A kind of lightweight space lattice structure |
| CN111942565A (en) * | 2020-08-05 | 2020-11-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Beam type lattice structure and micro-truss structure with same |
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