CN104235591A - Impact-resistant hybrid grid structure and compression method thereof - Google Patents
Impact-resistant hybrid grid structure and compression method thereof Download PDFInfo
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- CN104235591A CN104235591A CN201410403295.7A CN201410403295A CN104235591A CN 104235591 A CN104235591 A CN 104235591A CN 201410403295 A CN201410403295 A CN 201410403295A CN 104235591 A CN104235591 A CN 104235591A
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Abstract
The invention discloses an impact-resistant hybrid grid structure, which comprises an upper-layer structure, odd layers of middle-layer structures and a first lower-layer structure which are connected in sequence in a stack-up manner, or the impact-resistant hybrid grid structure comprises the upper-layer structure, even layers of middle-layer structures and a second lower-layer structure which are connected in sequence in a stack-up manner; the invention also discloses a compression method for compressing the impact-resistant hybrid grid structure. The compression method comprises the following steps that (S1) pressure is applied to a first transverse stretching edge, a second transverse stretching edge and a third transverse stretching edge; (S2) the impact-resistant hybrid grid structure correspondingly deforms, and during the process of deformation, the stress-strain curve of the impact-resistant hybrid grid structure is turned into a horizontal straight line; (S3) pressure application is continued on the impact-resistant hybrid grid structure to enable the stress-strain curve of the impact-resistant hybrid grid structure to start climbing; (S4) after the impact-resistant hybrid grid structure is fully compacted and bruised, energy absorption depends on mutual friction and slippage between the edges. The impact-resistant hybrid grid structure has the advantages that production is easy, the cost is low, and the like.
Description
Technical field
The present invention relates to a kind of shock proof grid, particularly the shock proof hybrid grid structure of one and compression method thereof.
Background technique
Traditional regular hexagon honeycomb grid structural material belongs to porous material, has the advantages such as light weight, specific strength are high, sound-absorbing, sound insulation, shock resistance, is therefore widely used in the fields such as packaging, load-bearing, shock resistance.For porous materials such as common honeycombs, its stress strain curve presents three phase characteristics, is respectively elastic deformation area, plasticity platform area and dense area.When porous material stress strain curve reaches dense area, show that material is compacted completely, lose the function of buffer shock-absorbing.Therefore the elastic deformation area before dense area and plasticity platform area curve reflect the energy absorption of porous material with the encirclement area of strain coordinate.The EAC of porous material is also relevant with stress strain curve course, can change its stress strain curve by the structural parameter changing material, reaches the object controlling its energy absorption.The porous materials such as conventional regular hexagon honeycomb almost can keep constant stress value up to packing stage after entering plasticity platform area.
Summary of the invention
Primary and foremost purpose of the present invention is that the shortcoming overcoming prior art is with not enough, a kind of shock proof hybrid grid structure is provided, this grid structure, by changing the internal structure of honeycomb, improves the stress strain curve of its platform phase latter half part, thus improves the shock resistance of grid structure.
Another object of the present invention is to overcome the shortcoming of prior art and deficiency, a kind of compression method compressing shock proof hybrid grid structure is provided.
Primary and foremost purpose of the present invention is achieved through the following technical solutions: a kind of shock proof hybrid grid structure, stackedly to be connected to form successively by superstructure 101, odd-level media layer damage 201 and the first substructure 301 or superstructure 101, even level media layer damage 202 and the second substructure 302 order, described superstructure 101 comprises the first oblique honeycomb limit 12, first, oblique honeycomb limit 11, second connected successively and laterally draws swollen limit 21, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14 and the first horizontal honeycomb limit 31, first laterally draws swollen limit 21 and the first horizontal honeycomb limit 31 to be parallel to each other, angle between first oblique honeycomb limit 11 with the second oblique honeycomb limit 12 is equal with the angle between the 3rd oblique honeycomb limit 13 with the 4th oblique honeycomb limit 14, and the second oblique honeycomb limit 12 and first laterally draws the angle between swollen limit 21 and first laterally to draw the angle between swollen limit 21 with the 3rd oblique honeycomb limit 13 equal, the perpendicular bisector axisymmetric on swollen limit 21 is laterally drawn on first oblique honeycomb limit 11 and the 4th oblique honeycomb limit 14 about first, the perpendicular bisector axisymmetric on swollen limit 21 is laterally drawn on the second oblique honeycomb limit 12 and the 3rd oblique honeycomb limit 13 about first, described odd-level media layer damage 201 comprises the individual layer media layer damage 2 that odd number stacks gradually, and even level media layer damage 202 comprises the individual layer media layer damage 2 that even number stacks gradually, individual layer media layer damage 2 comprise connect successively the 5th horizontal honeycomb limit 32, oblique honeycomb limit 15, second, the 6th oblique honeycomb limit 16 and the 3rd horizontal honeycomb limit 33, second horizontal honeycomb limit 32 and the 3rd horizontal honeycomb limit 33 are parallel to each other, angle between 5th oblique honeycomb limit 15 with the second horizontal honeycomb limit 32 is equal with the angle between the second horizontal honeycomb limit 32 with the 6th oblique honeycomb limit 16, 5th oblique honeycomb limit 15 and the 6th oblique honeycomb limit 16 are about the perpendicular bisector axisymmetric on the second horizontal honeycomb limit 32, carry out interlayer by shared second horizontal honeycomb limit 32 or the 3rd horizontal honeycomb limit 33 between individual layer media layer damage 2 with individual layer media layer damage 2 to be connected, and n-th layer individual layer media layer damage 2 and (n-1)th layer of individual layer media layer damage 2 are about its common edge second horizontal honeycomb limit 32 or the 3rd horizontal honeycomb limit 33 axisymmetric, described first substructure 301 comprises the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 4th horizontal honeycomb limit 34, the 9th oblique honeycomb limit 19, the tenth oblique honeycomb limit 10 and second that connect successively and laterally draws swollen limit 22, 4th horizontal honeycomb limit 34 and second laterally draws swollen limit 22 to be parallel to each other, angle between 7th oblique honeycomb limit 17 with the 8th oblique honeycomb limit 18 is equal with the angle between the 9th oblique honeycomb limit 19 with the tenth oblique honeycomb limit 10, and the angle between the 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34 is equal with the angle between the 4th horizontal honeycomb limit 34 with the 9th oblique honeycomb limit 19, 7th oblique honeycomb limit 17 and the tenth oblique honeycomb limit 10 are about the perpendicular bisector axisymmetric on the 4th horizontal honeycomb limit 34, and the 8th oblique honeycomb limit 18 and the 9th oblique honeycomb limit 19 are about the perpendicular bisector axisymmetric on the 4th horizontal honeycomb limit 34, described second substructure 302 comprises the 11 oblique honeycomb limit 112, oblique honeycomb limit the 111, the 12, the 3rd connected successively and laterally draws swollen limit the 23, the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113, the 14 and the 5th horizontal honeycomb limit 35, 3rd laterally draws swollen limit 23 and the 5th horizontal honeycomb limit 35 to be parallel to each other, 11 oblique honeycomb limit 111 is equal with the angle between the 14 oblique honeycomb limit 114 with the 13 oblique honeycomb limit 113 with the angle between the 12 oblique honeycomb limit 112, and the 12 oblique honeycomb limit 112 and the 3rd laterally draws the angle between swollen limit 23 and the 3rd laterally to draw the angle between swollen limit 23 with the 13 oblique honeycomb limit 113 equal, the perpendicular bisector axisymmetric on swollen limit 23 is laterally drawn on 11 oblique honeycomb limit 114, oblique honeycomb limit the 111 and the 14 about the 3rd, the perpendicular bisector axisymmetric on swollen limit 23 is laterally drawn on the 12 oblique honeycomb limit 113, oblique honeycomb limit the 112 and the 13 about the 3rd, described first oblique honeycomb limit 11, second oblique honeycomb limit 12, 3rd oblique honeycomb limit 13, 4th oblique honeycomb limit 14, 5th oblique honeycomb limit 15, 6th oblique honeycomb limit 16, 7th oblique honeycomb limit 17, 8th oblique honeycomb limit 18, 9th oblique honeycomb limit 19, tenth oblique honeycomb limit 10, 11 oblique honeycomb limit 111, 12 oblique honeycomb limit 112, the length on the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 is equal, first laterally draws swollen limit 21, second laterally draws swollen limit 22 and the 3rd laterally to draw the length on swollen limit 23 equal, first horizontal honeycomb limit 31, second horizontal honeycomb limit 32, 3rd horizontal honeycomb limit 33, the length on the 4th horizontal honeycomb limit 34 and the 5th horizontal honeycomb limit 35 is equal, described superstructure 101 is carried out interlayer by the first horizontal honeycomb limit 31 with the 3rd horizontal honeycomb limit 33 with odd-level media layer damage 201 and is connected, odd-level media layer damage 201 carries out interlayer by the second horizontal honeycomb limit 32 with the 4th horizontal honeycomb limit 34 with the first substructure 301 and is connected, superstructure 101 is carried out interlayer by the first horizontal honeycomb limit 31 with the 3rd horizontal honeycomb limit 33 with even level media layer damage 202 and is connected, and even level media layer damage 202 is connected with the 5th horizontal honeycomb limit 35 by the 3rd horizontal honeycomb limit 33 with the second substructure 302.
Length, first horizontal honeycomb limit 31 length and first on described first oblique honeycomb limit 11 laterally draw the lenth ratio on swollen limit 21 to be 1:1:2, first laterally draws the angle between swollen limit 21 and the second oblique honeycomb limit 12, tenth oblique honeycomb limit 10 and second laterally draws the angle between swollen limit 22 and the 12 oblique honeycomb limit 112 and the 3rd laterally to draw the angle between swollen limit 23 to be 60 °, angle between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, angle between first horizontal honeycomb limit 31 and the 4th oblique honeycomb limit 14, angle between second horizontal honeycomb limit 32 and the 5th oblique honeycomb limit 15, angle between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, angle between 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34, angle between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and the angle between the 14 oblique honeycomb limit 114 and the 5th horizontal honeycomb limit 35 are 120 °.
Laterally swollen limit 21 is drawn by sharing first, second laterally draws swollen limit 22 and the 3rd laterally draw swollen limit 23 and a grid first is laterally drawn the free end points on swollen limit 31 and the first oblique honeycomb 11 of another grid and the intersection point on the 5th oblique honeycomb limit 15, the end points on the 5th oblique honeycomb limit 15 that the free end points on the 3rd horizontal honeycomb limit 33 is corresponding with another grid, second laterally draws the free end points on the free end points on swollen limit 22 and the 7th oblique honeycomb limit 17 of another grid and the free end points on the 5th horizontal honeycomb limit 35 to be connected successively with the intersection point on the 5th oblique honeycomb limit 15 with the 11 oblique honeycomb limit 111 of another grid, repeated arrangement.
The material preparing described grid structure is aluminium sheet, plank, cardboard or macromolecular material; The method preparing described grid structure is roll forming method and method of laser welding, board pasted method, the method manufactures such as ultraviolet light polymerization method, rapid shaping.
Described speed forming method is stereolithography apparatus method, selective laser sintering process, layer separated growth method and fused deposition modeling method.
Another object of the present invention is achieved through the following technical solutions: a kind of compression method compressing described shock proof hybrid grid structure, comprises the following steps:
Step 1, swollen limit 21, second is laterally drawn laterally to draw swollen limit 22 and the 3rd laterally to draw swollen limit 23 to apply pressure to first;
Step 2, the first oblique honeycomb limit 12, oblique honeycomb limit 11, second, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14, the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, oblique honeycomb limit the 112, the 13, oblique honeycomb limit the 111, the 12, oblique honeycomb limit the 10, the 11 bending fold distortion, angle between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, second oblique honeycomb limit 12 and the first horizontal angle drawn between swollen limit 21, angle between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, angle between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, angle between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, tenth oblique honeycomb limit 10 and the second horizontal angle drawn between swollen limit 22, angle between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12, the angle between swollen limit 23 is laterally drawn on 12 oblique honeycomb limit 112 and the 3rd, 3rd laterally draws the angle between the angle between oblique honeycomb limit 113, swollen limit the 23 and the 13 and the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 all to reduce, angle between 4th oblique honeycomb limit 14 and the first horizontal honeycomb limit 31, angle between 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34, angle between 4th horizontal honeycomb limit 34 and the 9th oblique honeycomb limit 19 and the angle between the 14 oblique honeycomb limit 114 and the 5th horizontal honeycomb limit 35 all increase, between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, all fold between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and between the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 and make contact to flat, first is made laterally to draw swollen limit 21, second laterally draws swollen limit 22 and the 3rd laterally to draw swollen limit 23 and the 5th oblique honeycomb limit 15 in adjacent individual layer media layer damage 2, a quadrilateral structure is formed between second horizontal honeycomb limit 32 and the 6th oblique honeycomb limit 16, 5th oblique honeycomb limit 15, 3rd horizontal honeycomb limit 33, relative position between 6th oblique honeycomb limit 16 and the 3rd horizontal honeycomb limit 33 and angle remain unchanged, the first oblique honeycomb limit 12, oblique honeycomb limit 11, second after folding, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14, the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 9th oblique honeycomb limit 19, the tenth oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, oblique honeycomb limit the 112, the 13, oblique honeycomb limit the 111, the 12, oblique honeycomb limit the 10, the 11 are comprised in the quadrilateral again formed, the stress strain curve of this process becomes the straight line of a level,
Step 3, continue to apply pressure to described shock proof hybrid grid structure, between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and be fully densified between the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, described 5th oblique honeycomb limit 15 and the 6th oblique honeycomb limit 16 start to produce bending deflection, the quadrilateral that again formed and the original regular hexagon of structure is made to start to occur bending and deformation, now, described shock proof hybrid grid structure is regarded as a kind of porous material lower relative to the porosity ratio of not being out of shape front material, therefore, the stress strain curve of described shock proof hybrid grid structure starts to climb,
After step 4, described shock proof hybrid grid structure are compacted conquassation completely, the absorption of energy relies on phase mutual friction between limit with limit and slippage.
The present invention has following advantage and effect relative to prior art:
(1) the present invention proposes a kind of shock proof hybrid grid structure, by changing the internal structure of honeycomb, changing the stress strain curve of its platform phase latter half part, thus improve the energy absorption capability of material.
(2) the present invention strengthens the shock resistance of cellular structure under the prerequisite not improving honeycomb weight, and structure is simple, therefore can be produced on a large scale by conventional honeycomb core manufacture method, has easy to manufacture, the advantages such as manufacturing cost is low.
Accompanying drawing explanation
Shock proof hybrid grid structural drawing when Fig. 1 is odd-level media layer damage.
Shock proof hybrid grid structural drawing when Fig. 2 is even level media layer damage.
Fig. 3 connect by multiple shock proof hybrid grid when only having an individual layer media layer damage 2 after structural drawing.
Fig. 4 is the manufacture process schematic diagram of superstructure 101, first substructure 301 and the second substructure 302.
Fig. 5 is the manufacture process schematic diagram of individual layer media layer damage 2.
What Fig. 6 a was media layer damage 2 total number of plies when being 1 stacks sequential schematic.
What Fig. 6 b was media layer damage 2 total number of plies when being 2 stacks sequential schematic.
What Fig. 6 c was media layer damage 2 total number of plies when being 3 stacks sequential schematic.
The deformation pattern of the hybrid grid structure that Fig. 7 is total number of plies of media layer damage 2 when being 2 by compression after load.
Fig. 8 is stress strain simulation curve comparison figure when this shock resistance hybrid grid structure and traditional regular hexagon cellular structure are hit.
Fig. 9 be total number of plies of media layer damage 2 when being respectively 1,2 and 3 this shock resistance hybrid grid structure and the plastic dissipated energy of traditional regular hexagon cellular structure when being hit simulation curve in time change comparison diagram.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As depicted in figs. 1 and 2, a kind of shock proof hybrid grid structure, successively by superstructure 101, odd-level media layer damage 201 and the first substructure 301 or superstructure 101, even level media layer damage 202 and the second substructure 302 order is stacked connects to form, described superstructure 101 comprises the first oblique honeycomb limit 12, first, oblique honeycomb limit 11, second connected successively and laterally draws swollen limit 21, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14 and the first horizontal honeycomb limit 31, first laterally draws swollen limit 21 and the first horizontal honeycomb limit 31 to be parallel to each other, angle between first oblique honeycomb limit 11 with the second oblique honeycomb limit 12 is equal with the angle between the 3rd oblique honeycomb limit 13 with the 4th oblique honeycomb limit 14, and the second oblique honeycomb limit 12 and first laterally draws the angle between swollen limit 21 and first laterally to draw the angle between swollen limit 21 with the 3rd oblique honeycomb limit 13 equal, the perpendicular bisector axisymmetric on swollen limit 21 is laterally drawn on first oblique honeycomb limit 11 and the 4th oblique honeycomb limit 14 about first, the perpendicular bisector axisymmetric on swollen limit 21 is laterally drawn on the second oblique honeycomb limit 12 and the 3rd oblique honeycomb limit 13 about first, described odd-level media layer damage 201 comprises the individual layer media layer damage 2 that odd number stacks gradually, and even level media layer damage 202 comprises the individual layer media layer damage 2 that even number stacks gradually, individual layer media layer damage 2 comprise connect successively the 5th horizontal honeycomb limit 32, oblique honeycomb limit 15, second, the 6th oblique honeycomb limit 16 and the 3rd horizontal honeycomb limit 33, second horizontal honeycomb limit 32 and the 3rd horizontal honeycomb limit 33 are parallel to each other, angle between 5th oblique honeycomb limit 15 with the second horizontal honeycomb limit 32 is equal with the angle between the second horizontal honeycomb limit 32 with the 6th oblique honeycomb limit 16, 5th oblique honeycomb limit 15 and the 6th oblique honeycomb limit 16 are about the perpendicular bisector axisymmetric on the second horizontal honeycomb limit 32, carry out interlayer by shared second horizontal honeycomb limit 32 or the 3rd horizontal honeycomb limit 33 between individual layer media layer damage 2 with individual layer media layer damage 2 to be connected, and n-th layer individual layer media layer damage 2 and (n-1)th layer of individual layer media layer damage 2 are about its common edge second horizontal honeycomb limit 32 or the 3rd horizontal honeycomb limit 33 axisymmetric, described first substructure 301 comprises the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 4th horizontal honeycomb limit 34, the 9th oblique honeycomb limit 19, the tenth oblique honeycomb limit 10 and second that connect successively and laterally draws swollen limit 22, 4th horizontal honeycomb limit 34 and second laterally draws swollen limit 22 to be parallel to each other, angle between 7th oblique honeycomb limit 17 with the 8th oblique honeycomb limit 18 is equal with the angle between the 9th oblique honeycomb limit 19 with the tenth oblique honeycomb limit 10, and the angle between the 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34 is equal with the angle between the 4th horizontal honeycomb limit 34 with the 9th oblique honeycomb limit 19, 7th oblique honeycomb limit 17 and the tenth oblique honeycomb limit 10 are about the perpendicular bisector axisymmetric on the 4th horizontal honeycomb limit 34, and the 8th oblique honeycomb limit 18 and the 9th oblique honeycomb limit 19 are about the perpendicular bisector axisymmetric on the 4th horizontal honeycomb limit 34, described second substructure 302 comprises the 11 oblique honeycomb limit 112, oblique honeycomb limit the 111, the 12, the 3rd connected successively and laterally draws swollen limit the 23, the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113, the 14 and the 5th horizontal honeycomb limit 35, 3rd laterally draws swollen limit 23 and the 5th horizontal honeycomb limit 35 to be parallel to each other, 11 oblique honeycomb limit 111 is equal with the angle between the 14 oblique honeycomb limit 114 with the 13 oblique honeycomb limit 113 with the angle between the 12 oblique honeycomb limit 112, and the 12 oblique honeycomb limit 112 and the 3rd laterally draws the angle between swollen limit 23 and the 3rd laterally to draw the angle between swollen limit 23 with the 13 oblique honeycomb limit 113 equal, the perpendicular bisector axisymmetric on swollen limit 23 is laterally drawn on 11 oblique honeycomb limit 114, oblique honeycomb limit the 111 and the 14 about the 3rd, the perpendicular bisector axisymmetric on swollen limit 23 is laterally drawn on the 12 oblique honeycomb limit 113, oblique honeycomb limit the 112 and the 13 about the 3rd, described first oblique honeycomb limit 11, second oblique honeycomb limit 12, 3rd oblique honeycomb limit 13, 4th oblique honeycomb limit 14, 5th oblique honeycomb limit 15, 6th oblique honeycomb limit 16, 7th oblique honeycomb limit 17, 8th oblique honeycomb limit 18, 9th oblique honeycomb limit 19, tenth oblique honeycomb limit 10, 11 oblique honeycomb limit 111, 12 oblique honeycomb limit 112, the length on the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 is equal, first laterally draws swollen limit 21, second laterally draws swollen limit 22 and the 3rd laterally to draw the length on swollen limit 23 equal, first horizontal honeycomb limit 31, second horizontal honeycomb limit 32, 3rd horizontal honeycomb limit 33, the length on the 4th horizontal honeycomb limit 34 and the 5th horizontal honeycomb limit 35 is equal, described superstructure 101 is carried out interlayer by the first horizontal honeycomb limit 31 with the 3rd horizontal honeycomb limit 33 with odd-level media layer damage 201 and is connected, odd-level media layer damage 201 carries out interlayer by the second horizontal honeycomb limit 32 with the 4th horizontal honeycomb limit 34 with the first substructure 301 and is connected, superstructure 101 is carried out interlayer by the first horizontal honeycomb limit 31 with the 3rd horizontal honeycomb limit 33 with even level media layer damage 202 and is connected, and even level media layer damage 202 is connected with the 5th horizontal honeycomb limit 35 by the 3rd horizontal honeycomb limit 33 with the second substructure 302.
Length, first horizontal honeycomb limit 31 length and first on described first oblique honeycomb limit 11 laterally draw the lenth ratio on swollen limit 21 to be 1:1:2, first laterally draws the angle between swollen limit 21 and the second oblique honeycomb limit 12, tenth oblique honeycomb limit 10 and second laterally draws the angle between swollen limit 22 and the 12 oblique honeycomb limit 112 and the 3rd laterally to draw the angle between swollen limit 23 to be 60 °, angle between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, angle between first horizontal honeycomb limit 31 and the 4th oblique honeycomb limit 14, angle between second horizontal honeycomb limit 32 and the 5th oblique honeycomb limit 15, angle between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, angle between 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34, angle between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and the angle between the 14 oblique honeycomb limit 114 and the 5th horizontal honeycomb limit 35 are 120 °.
As shown in Figure 3, laterally swollen limit 21 is drawn by sharing first, second laterally draws swollen limit 22 and the 3rd laterally draw swollen limit 23 and a grid first is laterally drawn the free end points on swollen limit 31 and the first oblique honeycomb 11 of another grid and the intersection point on the 5th oblique honeycomb limit 15, the end points on the 5th oblique honeycomb limit 15 that the free end points on the 3rd horizontal honeycomb limit 33 is corresponding with another grid, second laterally draws the free end points on the free end points on swollen limit 22 and the 7th oblique honeycomb limit 17 of another grid and the free end points on the 5th horizontal honeycomb limit 35 to be connected successively with the intersection point on the 5th oblique honeycomb limit 15 with the 11 oblique honeycomb limit 111 of another grid, described shock proof hybrid grid structure repeated arrangement.
Below provide a kind of manufacture method of this structure.Adopt and superstructure 101, individual layer media layer damage 2, first substructure 301 and the second substructure 302 are gone out to aluminium flake roll forming Layered manufacturing, then stack in order according to the number of total number of plies of individual layer media layer damage 2, by bonding or be welded to connect each layer and form integral honeycomb structure.
The manufacture method of superstructure 101, first substructure 301 and the second substructure 302 is: be first with the first roller 4 of rectangle gear hobbing and the second roller 5 to make aluminium flake be pressed into rectangular corrugated shape by two, then the aluminium flake of first one-step forming is put into mould 6, post forming is carried out by pressure head 7 and pressure head 8 pairs of aluminium flakes, obtain superstructure 101, first substructure 301 and the second substructure 302, as shown in Figure 4.
For individual layer media layer damage 2, directly aluminium flake can be made shaping by the roller 9 of the trapezoidal gear hobbing of two bands, as shown in Figure 5.
Superstructure 101 after shaping, individual layer media layer damage 2, first substructure 301 and the second substructure 302 according to total number of plies of individual layer media layer damage 2, by after the order arrangement in Fig. 6 a, Fig. 6 b and Fig. 6 c direct correspondence adjacent first draw swollen limit 21, second widthwise edge 22, the 3rd laterally to draw horizontal honeycomb limit 32, horizontal honeycomb limit 31, second, swollen limit 23, first, the 3rd horizontal honeycomb limit 33, the 4th horizontal honeycomb limit 34 and the 5th horizontal honeycomb limit 35 place to apply glue or be directly welded together can to obtain whole hybrid grid structure.
Below dynamics finite element simulation is carried out with the dynamic deformation behavior of research structure in deformation process and energy absorbing efficiency to this hybrid grid structure.
As shown in Figure 7, illustrate rear yielded fastening grid structure be hit after malformation figure.
Its deformation process is as follows:
1) resiliently deformable process, grid structure of the present invention snakelike folded-sheet honeycomb structure limit when initial by reversible elastic bending deflection occurs when small load, its stress strain curve is a skew lines in the starting stage, as shown in Figure 7, its energy absorbed in resiliently deformable process is close with normal cellular.
2) plastic history, comprises three phases
1. yielding stage before: the first oblique honeycomb limit 12, oblique honeycomb limit 11, second of structure of the present invention, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14, the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, oblique honeycomb limit the 112, the 13, oblique honeycomb limit the 111, the 12, oblique honeycomb limit the 10, the 11 first bending fold distortion, angle between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, second oblique honeycomb limit 12 and the first horizontal angle drawn between swollen limit 21, angle between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, angle between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, angle between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, tenth oblique honeycomb limit 10 and the second horizontal angle drawn between swollen limit 22, angle between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12, the angle between swollen limit 23 is laterally drawn on 12 oblique honeycomb limit 112 and the 3rd, 3rd laterally draws the angle between the angle between oblique honeycomb limit 113, swollen limit the 23 and the 13 and the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 to reduce, angle between 4th oblique honeycomb limit 14 and the first horizontal honeycomb limit 31, angle between 8th oblique honeycomb limit 18 and the 4th horizontal honeycomb limit 34, angle between 4th horizontal honeycomb limit 34 and the 9th oblique honeycomb limit 19 and the angle between the 14 oblique honeycomb limit 114 and the 5th horizontal honeycomb limit 35 increase, between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, fold between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and between the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14 and make contact to flat, first is made laterally to draw swollen limit 21, second laterally draws swollen limit 22 and the 3rd laterally to draw swollen limit 23 and the 5th oblique honeycomb limit 15 in adjacent individual layer media layer damage 2, a quadrilateral structure is formed between second horizontal honeycomb limit 32 and the 6th oblique honeycomb limit 16, and the 5th oblique honeycomb limit 15, 3rd horizontal honeycomb limit 33, relative position between 6th oblique honeycomb limit 16 and the 3rd horizontal honeycomb limit 33 and angle remain unchanged, the first oblique honeycomb limit 12, oblique honeycomb limit 11, second after folding, the 3rd oblique honeycomb limit 13, the 4th oblique honeycomb limit 14, the 7th oblique honeycomb limit 17, the 8th oblique honeycomb limit 18, the 9th oblique honeycomb limit 19, the tenth oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, oblique honeycomb limit the 112, the 13, oblique honeycomb limit the 111, the 12, oblique honeycomb limit the 10, the 11 are comprised in a quadrilateral newly formed, the stress strain curve of this process becomes the straight line of a level, and power absorption is close with normal cellular plastic history.As shown in Figure 8, be stress strain simulation curve comparison figure when this shock resistance hybrid grid structure and traditional regular hexagon cellular structure are hit, wherein X-axis representative structure longitudinal strain, Y-axis representative structure stress value.
2. yielding stage after: structure of the present invention continues pressurized, between first oblique honeycomb limit 11 and the second oblique honeycomb limit 12, between 3rd oblique honeycomb limit 13 and the 4th oblique honeycomb limit 14, between 7th oblique honeycomb limit 17 and the 8th oblique honeycomb limit 18, between 9th oblique honeycomb limit 19 and the tenth oblique honeycomb limit 10, completely densified between 11 oblique honeycomb limit 112, oblique honeycomb limit the 111 and the 12 and between the 13 oblique honeycomb limit 114, oblique honeycomb limit the 113 and the 14, therefore remaining 5th oblique honeycomb limit 15 and the 6th oblique honeycomb limit 16 start to produce bending deflection, namely the quadrilateral newly formed and the original regular hexagon of structure start to occur bending and deformation, now described structure can be regarded as a kind of porous material lower relative to the porosity ratio of not being out of shape front material, therefore its stress strain curve starts slowly to climb, and exceeded traditional cellular material, as shown in Figure 8, therefore this structure can absorb more energy in this stage than normal cellular.
3. packing stage: now structure is compacted conquassation completely, power absorption mainly relies on phase mutual friction between limit with limit and slippage, similar to the energy absorption process of the normal cellular be compacted.
Can be known by above-mentioned deformation process analysis, the raising of the shock resistance of structure of the present invention mainly appears at rear yielding stage.
The size of plastic dissipated energy can the energy absorption capability of reflect structure in the process of being hit, as shown in Figure 9, wherein X-axis represents the time, the plastic dissipated energy value of Y-axis representative structure, when total number of plies of media layer damage 2 is 1,2 and 3, the total size of plastic dissipated energy of the grid structure of the present invention's mixing is all larger than legacy cellular structure in the rear yielded fastening stage, and therefore the shock resistance of structure is stronger.
Above-described embodiment is the present invention's preferably mode of execution; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. a shock proof hybrid grid structure, is characterized in that, included by stack gradually the superstructure (101) of connection, odd-level media layer damage (201) and the first substructure (301);
Or comprise the superstructure (101), even level media layer damage (202) and the second substructure (302) that stack gradually connection;
Described superstructure (101) comprises the first oblique honeycomb limit (11), the second oblique honeycomb limit (12), first that connect successively and laterally draws swollen limit (21), the 3rd oblique honeycomb limit (13), the 4th oblique honeycomb limit (14) and the first horizontal honeycomb limit (31), first laterally draws swollen limit (21) and the first horizontal honeycomb limit (31) to be parallel to each other, angle between first oblique honeycomb limit (11) with the second oblique honeycomb limit (12) is equal with the angle between the 3rd oblique honeycomb limit (13) with the 4th oblique honeycomb limit (14), and the second oblique honeycomb limit (12) and first laterally draws the angle between swollen limit (21) and first laterally to draw the angle between swollen limit (21) with the 3rd oblique honeycomb limit (13) equal, first oblique honeycomb limit (11) and the 4th oblique honeycomb limit (14) laterally draw the perpendicular bisector axisymmetric on swollen limit (21) about first, the second oblique honeycomb limit (12) and the 3rd oblique honeycomb limit (13) laterally draw the perpendicular bisector axisymmetric on swollen limit (21) about first, described odd-level media layer damage (201) comprises the individual layer media layer damage (2) that odd number stacks gradually, and even level media layer damage (202) comprises the individual layer media layer damage (2) that even number stacks gradually, described individual layer media layer damage (2) comprise connect successively the 5th oblique honeycomb limit (15), the second horizontal honeycomb limit (32), the 6th oblique honeycomb limit (16) and the 3rd horizontal honeycomb limit (33), second horizontal honeycomb limit (32) and the 3rd horizontal honeycomb limit (33) are parallel to each other, angle between 5th oblique honeycomb limit (15) with the second horizontal honeycomb limit (32) is equal with the angle between the second horizontal honeycomb limit (32) with the 6th oblique honeycomb limit (16), 5th oblique honeycomb limit (15) and the 6th oblique honeycomb limit (16) are about the perpendicular bisector axisymmetric of the second horizontal honeycomb limit (32), interlayer connection is carried out by shared second horizontal honeycomb limit (32) or the 3rd horizontal honeycomb limit (33) between individual layer media layer damage (2), and n-th layer individual layer media layer damage (2) and (n-1)th layer of individual layer media layer damage (2) are about its common edge second horizontal honeycomb limit (32) or the 3rd horizontal honeycomb limit (33) axisymmetric, wherein, n is positive integer, described first substructure (301) comprises the 7th oblique honeycomb limit (17), the 8th oblique honeycomb limit (18), the 4th horizontal honeycomb limit (34), the 9th oblique honeycomb limit (19), the tenth oblique honeycomb limit (10) and second that connect successively and laterally draws swollen limit (22), described 4th horizontal honeycomb limit (34) laterally draws swollen limit (22) to be parallel to each other with second, described 7th oblique honeycomb limit (17) is equal with the angle between the 9th oblique honeycomb limit (19) with the tenth oblique honeycomb limit (10) with the angle between the 8th oblique honeycomb limit (18), and the angle between the 8th oblique honeycomb limit (18) and the 4th horizontal honeycomb limit (34) is equal with the angle between the 4th horizontal honeycomb limit (34) with the 9th oblique honeycomb limit (19), 7th oblique honeycomb limit (17) and the tenth oblique honeycomb limit (10) are about the perpendicular bisector axisymmetric of the 4th horizontal honeycomb limit (34), and the 8th oblique honeycomb limit (18) and the 9th oblique honeycomb limit (19) are about the perpendicular bisector axisymmetric of the 4th horizontal honeycomb limit (34), described second substructure (302) comprises the 11 oblique honeycomb limit (111), the 12 oblique honeycomb limit (112), the 3rd that connect successively and laterally draws swollen limit (23), the 13 oblique honeycomb limit (113), the 14 oblique honeycomb limit (114) and the 5th horizontal honeycomb limit (35), 3rd laterally draws swollen limit (23) and the 5th horizontal honeycomb limit (35) to be parallel to each other, described 11 oblique honeycomb limit (111) is equal with the angle between the 14 oblique honeycomb limit (114) with the 13 oblique honeycomb limit (113) with the angle between the 12 oblique honeycomb limit (112), and the 12 oblique honeycomb limit (112) and the 3rd laterally draws the angle between swollen limit (23) and the 3rd laterally to draw the angle between swollen limit (23) with the 13 oblique honeycomb limit (113) equal, 11 oblique honeycomb limit (111) and the 14 oblique honeycomb limit (114) laterally draw the perpendicular bisector axisymmetric on swollen limit (23) about the 3rd, the 12 oblique honeycomb limit (112) and the 13 oblique honeycomb limit (113) laterally draw the perpendicular bisector axisymmetric on swollen limit (23) about the 3rd, described first oblique honeycomb limit (11), second oblique honeycomb limit (12), 3rd oblique honeycomb limit (13), 4th oblique honeycomb limit (14), 5th oblique honeycomb limit (15), 6th oblique honeycomb limit (16), 7th oblique honeycomb limit (17), 8th oblique honeycomb limit (18), 9th oblique honeycomb limit (19), tenth oblique honeycomb limit (10), 11 oblique honeycomb limit (111), 12 oblique honeycomb limit (112), the length of the 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114) is equal, first laterally draws swollen limit (21), second laterally draws swollen limit (22) and the 3rd laterally to draw the length on swollen limit (23) equal, first horizontal honeycomb limit (31), second horizontal honeycomb limit (32), 3rd horizontal honeycomb limit (33), the length of the 4th horizontal honeycomb limit (34) and the 5th horizontal honeycomb limit (35) is equal, described superstructure (101) is carried out interlayer by the first horizontal honeycomb limit (31) with the 3rd horizontal honeycomb limit (33) with odd-level media layer damage (201) and is connected, odd-level media layer damage (201) carries out interlayer by the second horizontal honeycomb limit (32) with the 4th horizontal honeycomb limit (34) with the first substructure (301) and is connected, superstructure (101) is carried out interlayer by the first horizontal honeycomb limit (31) with the 3rd horizontal honeycomb limit (33) with even level media layer damage (202) and is connected, even level media layer damage (202) is connected with the 5th horizontal honeycomb limit (35) by the 3rd horizontal honeycomb limit (33) with the second substructure (302).
2. shock proof hybrid grid structure according to claim 1, it is characterized in that, length, first horizontal honeycomb limit (31) length and first of described first oblique honeycomb limit (11) laterally draw the lenth ratio on swollen limit (21) to be 1:1:2; first laterally draws the angle between swollen limit (21) and the second oblique honeycomb limit (12), tenth oblique honeycomb limit (10) and second laterally draws the angle between swollen limit (22) and the 12 oblique honeycomb limit (112) and the 3rd laterally to draw the angle between swollen limit (23) to be 60 °, angle between first oblique honeycomb limit (11) and the second oblique honeycomb limit (12), angle between first horizontal honeycomb limit (31) and the 4th oblique honeycomb limit (14), angle between second horizontal honeycomb limit (32) and the 5th oblique honeycomb limit (15), angle between 7th oblique honeycomb limit (17) and the 8th oblique honeycomb limit (18), angle between 8th oblique honeycomb limit (18) and the 4th horizontal honeycomb limit (34), angle between 11 oblique honeycomb limit (111) and the 12 oblique honeycomb limit (112) and the angle between the 14 oblique honeycomb limit (114) and the 5th horizontal honeycomb limit (35) are 120 °.
3. shock proof hybrid grid structure according to claim 1, it is characterized in that, laterally swollen limit (21) is drawn by sharing described first, second laterally draws swollen limit (22) and the 3rd laterally to draw swollen limit (23), a grid first is laterally drawn the free end points on swollen limit (31) and the first oblique honeycomb (11) of another hybrid grid structure and the intersection point of the 5th oblique honeycomb limit (15), the end points of the free end points of the 3rd horizontal honeycomb limit (33) and the 5th oblique honeycomb limit (15) corresponding to another hybrid grid structure, second laterally draws the free end points of the free end points on swollen limit (22) and the 7th oblique honeycomb limit (17) of another grid and the free end points of the 5th horizontal honeycomb limit (35) to be connected successively with the intersection point of the 5th oblique honeycomb limit (15) with the 11 oblique honeycomb limit (111) of another hybrid grid structure, described hybrid grid structure repeated arrangement.
4. the shock proof hybrid grid structure according to any one of claims 1 to 3, is characterized in that, the material preparing described shock proof hybrid grid structure is aluminium sheet, plank, cardboard or macromolecular material; The method preparing described shock proof hybrid grid structure is roll forming method, method of laser welding, board pasted method, ultraviolet light polymerization method or speed forming method.
5. shock proof hybrid grid structure according to claim 4, is characterized in that, described speed forming method is stereolithography apparatus method, selective laser sintering process, layer separated growth method or fused deposition modeling method.
6. compress a compression method for shock proof hybrid grid structure according to claim 1, it is characterized in that, comprise the following steps:
Step 1, swollen limit (21), second is laterally drawn laterally to draw swollen limit (22) and the 3rd laterally to draw swollen limit (23) applying pressure to first;
Step 2, first oblique honeycomb limit (11), second oblique honeycomb limit (12), 3rd oblique honeycomb limit (13), 4th oblique honeycomb limit (14), 7th oblique honeycomb limit (17), 8th oblique honeycomb limit (18), 9th oblique honeycomb limit (19) and the tenth oblique honeycomb limit (10), 11 oblique honeycomb limit (111), 12 oblique honeycomb limit (112), 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114) bending fold distortion, angle between first oblique honeycomb limit (11) and the second oblique honeycomb limit (12), second oblique honeycomb limit (12) and first laterally draws the angle between swollen limit (21), angle between 3rd oblique honeycomb limit (13) and the 4th oblique honeycomb limit (14), angle between 7th oblique honeycomb limit (17) and the 8th oblique honeycomb limit (18), angle between 9th oblique honeycomb limit (19) and the tenth oblique honeycomb limit (10), tenth oblique honeycomb limit (10) and second laterally draws the angle between swollen limit (22), angle between 11 oblique honeycomb limit (111) and the 12 oblique honeycomb limit (112), 12 oblique honeycomb limit (112) and the 3rd laterally draws the angle between swollen limit (23), 3rd laterally draws the angle between swollen limit (23) and the 13 oblique honeycomb limit (113) and the angle between the 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114) all to reduce, angle between 4th oblique honeycomb limit (14) and the first horizontal honeycomb limit (31), angle between 8th oblique honeycomb limit (18) and the 4th horizontal honeycomb limit (34), angle between 4th horizontal honeycomb limit (34) and the 9th oblique honeycomb limit (19) and the angle between the 14 oblique honeycomb limit (114) and the 5th horizontal honeycomb limit (35) all increase, between first oblique honeycomb limit (11) and the second oblique honeycomb limit (12), between 3rd oblique honeycomb limit (13) and the 4th oblique honeycomb limit (14), between 7th oblique honeycomb limit (17) and the 8th oblique honeycomb limit (18), between 9th oblique honeycomb limit (19) and the tenth oblique honeycomb limit (10), all fold between 11 oblique honeycomb limit (111) and the 12 oblique honeycomb limit (112) and between the 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114) and make contact to flat, first is made laterally to draw swollen limit (21), second laterally draws swollen limit (22) and the 3rd laterally to draw swollen limit (23) and the 5th oblique honeycomb limit (15) in adjacent individual layer media layer damage (2), a quadrilateral structure is formed between second horizontal honeycomb limit (32) and the 6th oblique honeycomb limit (16), 5th oblique honeycomb limit (15), 3rd horizontal honeycomb limit (33), relative position between 6th oblique honeycomb limit (16) and the 3rd horizontal honeycomb limit (33) and angle remain unchanged, the first oblique honeycomb limit (11) after folding, second oblique honeycomb limit (12), 3rd oblique honeycomb limit (13), 4th oblique honeycomb limit (14), 7th oblique honeycomb limit (17), 8th oblique honeycomb limit (18), 9th oblique honeycomb limit (19), tenth oblique honeycomb limit (10), 11 oblique honeycomb limit (111), 12 oblique honeycomb limit (112), 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114) are comprised in the quadrilateral again formed, the stress strain curve of this process becomes the straight line of a level,
Step 3, continue to apply pressure to described shock proof hybrid grid structure, between first oblique honeycomb limit (11) and the second oblique honeycomb limit (12), between 3rd oblique honeycomb limit (13) and the 4th oblique honeycomb limit (14), between 7th oblique honeycomb limit (17) and the 8th oblique honeycomb limit (18), between 9th oblique honeycomb limit (19) and the tenth oblique honeycomb limit (10), between 11 oblique honeycomb limit (111) and the 12 oblique honeycomb limit (112) and be fully densified between the 13 oblique honeycomb limit (113) and the 14 oblique honeycomb limit (114), described 5th oblique honeycomb limit (15) and the 6th oblique honeycomb limit (16) start to produce bending deflection, the quadrilateral that again formed and the original regular hexagon of structure is made to start to occur bending and deformation, now, described shock proof hybrid grid structure is regarded as a kind of porous material lower relative to the porosity ratio of not being out of shape front material, therefore, the stress strain curve of described shock proof hybrid grid structure starts to climb,
After step 4, described shock proof hybrid grid structure are compacted conquassation completely, the absorption of energy relies on phase mutual friction between limit with limit and slippage.
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