CN107448528A - The composite lightweight structure and structural body of high-energy absorption rate and comfort cushioning ability - Google Patents
The composite lightweight structure and structural body of high-energy absorption rate and comfort cushioning ability Download PDFInfo
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- CN107448528A CN107448528A CN201710781300.1A CN201710781300A CN107448528A CN 107448528 A CN107448528 A CN 107448528A CN 201710781300 A CN201710781300 A CN 201710781300A CN 107448528 A CN107448528 A CN 107448528A
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- energy absorption
- composite lightweight
- absorption rate
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- cushioning ability
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/08—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber
- F16F3/10—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
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Abstract
The present invention proposes a kind of composite lightweight structure and structural body of high-energy absorption rate and comfort cushioning ability.The composite lightweight structure of the high-energy absorption rate and comfort cushioning ability includes shell and inner support, and shell is arranged to closed hollow shape；Inner support is connected in the shell, and the inner support is arranged to lattice structure, and the inner support includes multiple unit cells according to default aligned transfer, and each unit cell is arranged to the frame-like for including multiple support bars.The characteristics of high-energy absorption rate of the present invention and the composite lightweight structure and structural body of comfort cushioning ability have lighter quality and higher specific area, and energy absorption capability is strong and buffer capacity is stronger.
Description
Technical field
The present invention relates to light structures field of engineering technology, more particularly to a kind of high-energy absorption rate and comfort cushioning ability
Composite lightweight structure and the composite lightweight structure body of high-energy absorption rate and comfort cushioning ability.
Background technology
In recent years, with Aero-Space science and technology industry fast development, for meet function and structure carrying double requirements,
Aircraft of new generation proposes higher requirement to the mechanical property and function of material therefor.Now, there is physically lightweight, height
Specific area, on mechanics it is high it is tough, absorb that mechanical energy ability is strong, the lightweight of the feature performance benefit such as easy heat radiation, well heat-insulated is more in heat transfer
Porous materials are considered as most promising advanced configuration material.
At present, light porous material collects the physical function light material integrated with structural behaviour as a kind of, largely
Applied to fields such as Aeronautics and Astronautics and ships.The research of lightweight structural material is concentrated mainly on foamed material, lattice material, honeybee
Nest material and sandwich etc..The characteristics of these materials are common is with very excellent in some specific directions or certain limit
Different characteristic, and in other side, due to the design feature of material structure so that it is in mechanical performance and using can not in function
What is avoided shows limitation.It is larger that the mechanical property of discrete structure shows as all directions difference；The rigidity of structure and energy are inhaled
Receipts can not be taken into account.By taking lattice structure as an example, because lattice structure has very big porosity, relative to entity structure,
With lighter quality and higher specific area；Lattice structure can give full play to the effect of structural material, compared to entity
The intensity of structure has declined, but Strength Mass ratio increases；The load displacement curve of lattice structure has one section longer
Platform phase, which greatly enhances the energy absorption capability of lattice structure；Because the surface area of lattice structure is big, therefore radiate
It hurry up；But in carrying flexing can occur for the pole in lattice structure, branch shank diameter is smaller, and buckling stress is smaller, buckling load
Smaller, the value of the ordinate load of load displacement curve will be small, can influence the area that load displacement curve surrounds, final to influence
Energy absorption capability.Shell structure has lighter quality and higher specific area, but anti-pressure ability is weaker.
Therefore, it is necessary to the composite lightweight structure and high-energy of studying a kind of high-energy absorption rate and comfort cushioning ability are inhaled
The composite lightweight structure body of yield and comfort cushioning ability.
Above- mentioned information disclosed in the background section is only used for strengthening the understanding of the background to the present invention, therefore it can
With including not formed the information to prior art known to persons of ordinary skill in the art.
The content of the invention
It is an object of the invention to overcome at least one deficiency of above-mentioned prior art, there is provided there is one kind higher-energy to inhale
The composite lightweight structure and high-energy absorption of the high-energy absorption rate and comfort cushioning ability of receipts ability and stronger buffer capacity
The composite lightweight structure body of rate and comfort cushioning ability.
The additional aspect and advantage of the present invention will be set forth in part in the description, and partly will be from description
It is apparent from, or can be by the practice of the present invention and acquistion.
According to an aspect of this disclosure, there is provided a kind of composite light knot of high-energy absorption rate and comfort cushioning ability
Structure, including：
Shell, it is arranged to closed hollow shape；
Inner support, it is connected in the shell, the inner support is arranged to lattice structure, and the inner support includes multiple press
According to the unit cell of default aligned transfer, each unit cell is arranged to the frame-like for including multiple support bars.
In a kind of exemplary embodiment of the disclosure, the shell is in spherical housing, square shell, conical shell
It is one or more.
In a kind of exemplary embodiment of the disclosure, the unit cell is arranged to space development model shape.
In a kind of exemplary embodiment of the disclosure, the support bar is located at the seamed edge of the space development model.
In a kind of exemplary embodiment of the disclosure, the space development model is the space tetrakaidecahedron, the face of space 12
One or more in body, the hexahedron of space ten.
In a kind of exemplary embodiment of the disclosure, the space tetrakaidecahedron unit cell includes：Six facings with
And eight equilateral triangle faces or eight regular hexagon faces and six facings.
In a kind of exemplary embodiment of the disclosure, the relative density of the composite lightweight structure is 5% to 20%.
In a kind of exemplary embodiment of the disclosure, the material of the inner support is aluminium alloy, titanium alloy and asphalt mixtures modified by epoxy resin
One or more in fat material.
In a kind of exemplary embodiment of the disclosure, the material of the shell is aluminium alloy, titanium alloy and epoxy resin
One or more in material.
According to an aspect of this disclosure, there is provided a kind of composite lightweight structure of high-energy absorption rate and comfort cushioning ability
Body, including：
The composite lightweight structure of high-energy absorption rate and comfort cushioning ability described in above-mentioned any one, according to default rule
Then sprawl in two-dimensional directional or stacked according to preset rules in three-dimensional.
As shown from the above technical solution, the present invention possesses at least one of advantages below and good effect：
The high-energy absorption rate of the present invention and the composite lightweight structure and high-energy absorption rate of comfort cushioning ability and good
The composite lightweight structure body of buffer capacity, is provided with closure, and the inner support of lattice structure is provided with closure；
Inner support includes multiple unit cells according to default aligned transfer, and each unit cell is arranged to the frame-like for including multiple support bars.Outside
Shell is arranged to closed hollow shape, it is possible to achieve the advantages of sandwich shell structure, inner support, which is arranged to lattice structure, can realize a little
The advantages of battle array structure, relative to entity structure, there is lighter quality and higher specific area；Surface area and shell structure
Surface area is equally big, but can conduct heat by being arranged on the lattice structure of enclosure interior, therefore it is also very fast to radiate；And
Lattice structure provides support for shell structure, avoids the shortcomings that shell structure anti-pressure ability is weaker；Identical, shell structure is a little
Battle array structure disperses bearing capacity, avoid pole that flexing can occur in carrying, do not interfere with the area that load displacement curve surrounds, most
Energy absorption capability is not interfered with eventually and buffer capacity is stronger.Therefore, high-energy absorption rate of the invention and comfort cushioning energy
The composite lightweight structure and high-energy absorption rate of power and the composite lightweight structure body of comfort cushioning ability are with lighter
Quality and higher specific area, radiating is also very fast, does not interfere with energy absorption capability.
Brief description of the drawings
Its example embodiment is described in detail by referring to accompanying drawing, above and other feature and advantage of the invention will become
It is more obvious.
Fig. 1 is the partial cutaway of the embodiment of composite lightweight structure one of high-energy absorption rate and comfort cushioning ability of the present invention
Depending on structural representation；
Fig. 2 is Fig. 1 full section structural representation；
Fig. 3 is the structural representation of the unit cell in Fig. 1；
Fig. 4 is the structural representation of the inner support in Fig. 1；
Fig. 5 is the interior branch of another embodiment of composite lightweight structure of high-energy absorption rate and comfort cushioning ability of the present invention
The structural representation of support；
Fig. 6 is the structural representation of the unit cell in Fig. 5；
Fig. 7 is the structural representation that simulation loading is carried out to model；
Fig. 8 is the load displacement curve schematic diagram of the simulation loading of five kinds of models；
Fig. 9 is that the load of five kinds of models absorbs the signal scatter diagram changed with spherical shell thickness t；
Figure 10 is the lower fixed flat planar attack time load response curve schematic diagram of five kinds of models；
Figure 11 is an embodiment of the composite lightweight structure body of high-energy absorption rate and comfort cushioning ability of the present invention
Structural representation；
Figure 12 is Fig. 9 complete section structural representation；
Figure 13 is another embodiment party of the composite lightweight structure body of high-energy absorption rate and comfort cushioning ability of the present invention
The structural representation of formula.
Main element description of reference numerals is as follows in figure：
1st, composite lightweight structure；
2nd, shell；
3rd, inner support；
31st, unit cell；
32nd, support bar；
4th, upper flat plate；
5th, lower flat board；
A, model one；
B, model two；
C, model three；
D, model four；
E, model five；
F, model six；
G, model seven；
H, model eight；
I, model nine；
J, model ten.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical accompanying drawing in figure
Mark represents same or similar structure, thus will omit their detailed description.
The composite lightweight structure one of shown high-energy absorption rate and comfort cushioning ability of the present invention is real referring to Figures 1 and 2
The structural representation of mode is applied, the invention provides a kind of composite lightweight structure 1, the composite lightweight structure 1 can include shell 2
And inner support 3.Shell 2 is arranged to closed hollow shape；Inner support 3 is connected in the shell 2, and the inner support 3 is arranged to
Lattice structure, the inner support 3 can include multiple unit cells 31 according to default aligned transfer, and each unit cell 31 is arranged to can be with
Include the frame-like of multiple support bars 32.
In this example embodiment, the shell 2 is spherical housing 2, in other example embodiments of the present invention
It can also be the one or more in square shell 2, conical shell 2.Certainly, it will be appreciated by persons skilled in the art that outside
The shape of shell 2 is not limited to foregoing description, can also be cylindrical shell 2, round table-like shell 2 etc., does not do particular determination herein.
The structural representation of inner support 3 shown in reference picture 4；Inner support 3 is connected in the shell 2, the inner support 3
Lattice structure is arranged to, the inner support 3 can include multiple unit cells 31 according to default aligned transfer, and each unit cell 31 is set
For the frame-like of multiple support bars 32 can be included.Due to the entirety of the inner support 3 of lattice structure formed by multiple unit cells 31
Profile and the whole inner cavity shape of shell 2 may not fit, therefore, in the periphery for the lattice structure that complete unit cell 31 is formed
Incomplete unit cell 31 can be set to be connected with the madial wall with shell 2.In this example embodiment, the unit cell 31 is set
For space development model shape, the support bar 32 is located at the seamed edge of the space development model.The structure of unit cell 31 shown in reference picture 3
Schematic diagram；The space development model is the space tetrakaidecahedron, and the space tetrakaidecahedron can include eight regular hexagons
Face and six facings, specifically, support bar 32 is arranged on each seamed edge of the tetrakaidecahedron, is had in each point of intersection
Three support bars 32 are intersecting, and the both ends of support bar 32 are arranged to wedge shape, so as to other two phases of support bar 32 with point of intersection
Mutually coordinate.The composite lightweight structure 1 can be prepared by 3D printing integration manufacturing technology, and each point of intersection is provided with filling
Portion, to fill the gap that is crossed to form of three support bars 32, make being completely embedded for support bar 32, improve entire compression, anti-twist
Etc. performance.In addition, in other example embodiments of the present invention, the space development model can also be the face of space 12
Body, the hexahedron of space ten etc., the space tetrakaidecahedron can also can include six facings and eight equilateral triangle faces,
Particular determination is not done herein.
The structural representation of the inner support 3 of 1 another embodiment of composite lightweight structure of the present invention shown in reference picture 5, institute
State space development model and be not limited to existing more regular planform.The space tetrakaidecahedron after deformation shown in reference picture 6
Unit cell 31 structural representation, space development model may be arranged as the tetrakaidecahedron of variant, by general spatial 14
Carry out stretching out the sub- support bar for making support bar 32 be divided into two connections in the middle part of the hexagon common edge of face body two, with quadrangle
Common edge it is constant.It is of course also possible to space dodecahedron, the hexahedron of space ten etc. are deformed, and variant
Can also be varied.
The relative density of the composite lightweight structure 1 is about 5% to 20%.Relative density refers to：A certain material
The mass M 1 in some space is taken, the composite lightweight structure 1 of identical material shaping occupies same space, the composite lightweight structure
1 quality is that M2, M2 and M1 ratio are relative density, and relative density is relative to the density of used material, with hole
The meaning of this kind of physical quantity of gap rate is similar.In this example embodiment, the relative density of composite lightweight structure 1 is about
10%.Relative density can be set as needed, and support bar 32 sets relatively close or support bar 32 diameter relatively large, phase
Can be bigger to density, conversely, support bar 32 sets relatively sparse or support bar 32 diameter relatively small, relative density meeting
It is smaller.
In this example embodiment, the material of the inner support 3 is in aluminium alloy, titanium alloy and epoxide resin material
It is one or more.The material of the shell 2 is the one or more in aluminium alloy, titanium alloy and epoxide resin material.Aluminium alloy,
Titanium alloy and epoxide resin material density are low, but its resistance to compression, anti-twist and intensity are higher.
Below with unit cell 31 for can include the space tetrakaidecahedron of eight regular hexagon faces and six facings with
And housing is the performance of the composite lightweight structure 1 to be specifically described exemplified by spherical shell：
The relative density of the lattice structure can be expressed as by the structural parameters under the form of unit cell 31：
Wherein, ρfIt is the density of lattice structure, ρsIt is the density of solid material, the radius of r support bars 32, l is support bar 32
Length.
The relative density formula of the spherical shell is expressed as：
Wherein, ρtsIt is the density of spherical shell, t is the thickness of spherical shell, and R is the outer radius of spherical shell.
The relative density of whole composite lightweight structure 1 is the relative density and spherical shell structure relative density of lattice structure
With, (1) formula be lattice structure relative to the relative density for occupying internal ball shell-space, (1) formula is multiplied by volume shared by inside spherical shell
The ratio of the volume surrounded with spherical outside surface, it is relative density of the lattice structure with respect to general structure, i.e.,
Spherical shell structure is formula (2) with respect to the relative density of general structure, and (2) formula is added with (3) formula, considers spherical shell
Thickness is typically small, i.e., t/R is smaller, therefore can omit secondary more high order event, that is, the relative density for obtaining composite lightweight structure 1 is public
Formula is：
Wherein, ρ is the density of composite lightweight structure 1.
The model of composite lightweight structure 1 that spherical shell outer dia is about 100mm is chosen, keeps composite lightweight structure 1
Relative density be about 10%, a group model is established by engineering drawing software etc.：Take the lattice structure of the space tetrakaidecahedron
The length l of support bar 32 be 7.5mm, the radius r of the support bar 32 of spherical shell thickness t and lattice structure is respectively：Model
One is 0.3mm and 1.26mm；Model two is 0.75mm and 1.035mm；Model three is 1.25mm and 0.6975mm.Supplement two in addition
The individual model that compares：Model four is pure spherical shell structure, and the thickness t of spherical shell is 1.725mm (the i.e. length of support bar 32
The radius r of l and support bar 32 is 0 model)；Model five is pure space tetrakaidecahedron lattice structure, the support bar of lattice structure
32 radius r is 1.3875mm (i.e. the thickness t of spherical shell is 0 model).
Because 3D printing integrated molding technology is more ripe, above-mentioned five models can be real by 3D printing technique
It is existing.Consider to link together lattice structure and spherical shell structure with titanium when finite element modelling.Above-mentioned five models
Material simulated from titanium alloy, its modulus of elasticity is 108GPa, and Poisson's ratio 0.3, plasticity is defined as 950MPa.Ginseng
According to the structural representation that simulation loading is carried out to model shown in Fig. 7, in the upper surface of above-mentioned five models, setting one is rigid
Upper flat plate 4, lower surface set the lower flat board 5 of a rigidity, then carry out quasistatic compression experiment, apply in upper flat plate 4 under 90mm
Press displacement load.
The load displacement curve schematic diagram of the simulation loading of five kinds of models shown in reference picture 8；Legend a is expressed as pure housing
The model four (t=1.725mm) of structure, legend b represent that t and r is respectively 1.25mm and 0.6975mm composite lightweight structure 1
Model three, legend c represent t and r be respectively 0.75mm and 1.035mm composite lightweight structure 1 model two, legend d represent t and
R is respectively the model one of 0.3mm and 1.26mm composite lightweight structure 1, and legend e represents pure space tetrakaidecahedron lattice structure r
For 1.3875mm model five.All curves all have three phases in figure：Elastic stage, platform phase and densification rank
Section, elastic stage load is with the linear ascendant trend of displacement, and platform phase load is with displacement in approximate straight curve, densification
Rising of the stage load with displacement drastically.See the dotted line segmentation of three parts in Fig. 5.From load displacement curve, platform phase
Load reduce with the thickness t of spherical shell increase, and the thickness t of spherical shell is bigger, and the displacement for being densified starting carries
Lotus is smaller.When the thickness t of spherical shell is bigger, during close to pure spherical shell structure, in certain displacement, bending occurs in structure
Song, there is the decline of load, this is unfavorable for the carrying of structure.
The load of five kinds of models shown in reference picture 9 absorbs the signal scatter diagram changed with spherical shell thickness t；Choose knot
The area that structural loads displacement before structure densification stage surrounds is the amount of energy of structural bearing, makes load and absorbs with ball
The scatter diagram of the thickness t changes of shape housing, can be obtained, the amount of energy of model one is 10260.23J, model from scatter diagram
Two amount of energy are 10880.17J, and the amount of energy of model three is 11584.70J, and the amount of energy of model four is
11146.29J, the amount of energy of model five are 10903.84J, so as to obtain the structure mould that the thickness t of spherical shell is 0.75mm
Type energy absorption is higher than other several models, under conditions of 10% relative density energy absorption with spherical shell thickness t
The trend of first increases and then decreases is presented.In above-mentioned five models, the model that spherical shell thickness t is 0.75mm has more preferable energy
Measure assimilation effect, and the energy absorbing efficiency of pure spherical shell structure and pure space tetrakaidecahedron lattice structure be markedly less than it is compound
The effect of light structures 1.
The model that three relative densities are 10% is chosen, wherein, legend f is expressed as the wall thickness t=0.5mm of spherical shell,
The model six of the radius r=1.1655mm of support bar 32 composite lightweight structure 1；Legend g is expressed as the wall thickness t=of spherical shell
0.3mm, the model seven of the radius r=1.26mm of support bar 32 composite lightweight structure 1；Legend h is expressed as the wall of spherical shell
Thick t=0.75mm, the radius r=1.035mm of support bar 32, composite lightweight structure 1 model eight；Legend i is expressed as spherical
The model nine of the wall thickness t=1.725mm of housing pure shell structure, legend j are expressed as the radius r=of the bar of support bar 32
The model ten of 1.385mm pure tetrakaidecahedron lattice structure.Apply 50m/s initial velocities in upper flat plate 4, carry out shock simulation,
Lower fixed flat planar attack time load response curve schematic diagram can be obtained, the lower fixation of five kinds of models shown in reference picture 10 is put down
Plate attack time load response curve schematic diagram；The cushion effect of composite lightweight structure 1 is made good use of as can be seen from Figure 10, buffering effect
Fruit is more preferable.
Further, present invention also offers a kind of body of composite lightweight structure 1.Reference picture 11 and this hair shown in Figure 12
The structural representation of one embodiment of the bright body of composite lightweight structure 1, the body of composite lightweight structure 1 exist according to preset rules
Two-dimensional directional is sprawled, and preset rules is extend to form a platy structure in vertical and horizontal, and certainly, preset rules are not limited to above-mentioned
Description, can be set to certain shape, such as can form circular slab, square plate, elliptical flat-plate etc., can also form tool
Porose structure.The structural representation of another embodiment of the body of composite lightweight structure of the present invention 1 shown in reference picture 13, should
The body of composite lightweight structure 1 stacks according to preset rules in three-dimensional, and preset rules are to extend to form one in vertical and horizontal
Platy structure, the structure of multilayer tabular build stack is then re-formed, certainly, preset rules are not limited to foregoing description, Ke Yishe
Determine into certain shape, such as cube-shaped, rectangular-shape, spheroid etc. can be formed, the porose structure of tool can also be formed.
The high-energy absorption rate of the present invention and the composite lightweight structure and structural body of comfort cushioning ability, are provided with closing
Shell 2, the inner support 3 of lattice structure is provided with closure 2；Inner support 3 includes multiple according to default aligned transfer
Unit cell 31, each unit cell 31 are arranged to the frame-like for including multiple support bars 32.Shell 2 is arranged to closed, it is possible to achieve folder
The advantages of layer shell structure, inner support 3 is arranged to the advantages of lattice structure can realize lattice structure, relative to entity structure,
With lighter quality and higher specific area；Surface area and the surface area of shell structure are equally big, but can be by setting
The lattice structure put in enclosure interior conducts heat, therefore it is also very fast to radiate；And lattice structure provides support for shell structure,
Avoid the shortcomings that shell structure anti-pressure ability is weaker；Identical, shell structure is that lattice structure disperses bearing capacity, avoids pole from existing
Flexing can occur during carrying, do not interfere with the area that load displacement curve surrounds, do not interfere with finally energy absorption capability and
Buffer capacity is stronger.Therefore, the composite lightweight structure and structural body of high-energy absorption rate of the invention and comfort cushioning ability
With with lighter quality and higher specific area, radiating is also very fast, does not interfere with energy absorption capability.
Above-mentioned described feature, structure or characteristic can be incorporated in one or more embodiment party in any suitable manner
In formula, if possible, it is characterized in discussed in each embodiment interchangeable.In superincumbent description, there is provided many specific thin
Section fully understands so as to provide to embodiments of the present invention.It will be appreciated, however, by one skilled in the art that this can be put into practice
The technical scheme of invention is without one or more in the specific detail, or can use other methods, component, material
Material etc..In other cases, known features, material or operation are not shown in detail or describe to avoid obscuring each side of the present invention
Face.
Term " about " " about " is used to be generally represented within the 20% of a set-point or scope in this specification, preferably
It is within 10%, and is more preferably within 5%.Given quantity is quantity about herein, implies that the feelings in no certain illustrated
Under condition, the implication of " about " " about " " substantially " " general " can be still implied.
In this specification, term "one", " one ", "the" and " described " be representing to exist one or more elements/group
Into part/etc.；Term "comprising", " comprising " and " having " to represent the open meaning being included and refer to except
The key element/part/listed also may be present outside waiting other key element/part/etc..
It should be appreciated that the present invention is not limited in its application to the detailed construction and arrangement of the part of this specification proposition
Mode.The present invention can have other embodiment, and can realize and perform in many ways.Aforesaid deformation form and
Modification is fallen within the scope of the present invention.It should be appreciated that this disclosure and the present invention limited are extended in text
And/or mentioned in accompanying drawing or all alternative combinations of two or more obvious independent features.It is all these different
Combination forms multiple alternative aspects of the present invention.Embodiment described in this specification illustrates to become known for realizing the present invention
Best mode, and will enable those skilled in the art using the present invention.
Claims (10)
- A kind of 1. composite lightweight structure of high-energy absorption rate and comfort cushioning ability, it is characterised in that including：Shell, it is arranged to closed hollow shape；Inner support, it is connected in the shell, the inner support is arranged to lattice structure, and the inner support includes multiple according to pre- If the unit cell of aligned transfer, each unit cell is arranged to the frame-like for including multiple support bars.
- 2. the composite lightweight structure of high-energy absorption rate according to claim 1 and comfort cushioning ability, it is characterised in that The shell is the one or more in spherical housing, square shell, conical shell.
- 3. the composite lightweight structure of high-energy absorption rate according to claim 1 and comfort cushioning ability, it is characterised in that The unit cell is arranged to space development model shape.
- 4. the composite lightweight structure of high-energy absorption rate according to claim 3 and comfort cushioning ability, it is characterised in that The support bar is located at the seamed edge of the space development model.
- 5. the composite lightweight structure of high-energy absorption rate according to claim 3 and comfort cushioning ability, it is characterised in that The space development model is the one or more in the space tetrakaidecahedron, space dodecahedron, the hexahedron of space ten.
- 6. the composite lightweight structure of high-energy absorption rate according to claim 5 and comfort cushioning ability, it is characterised in that The space tetrakaidecahedron unit cell includes：Six facings and eight equilateral triangle faces or eight regular hexagon faces and six Individual facing.
- 7. the composite lightweight structure of high-energy absorption rate according to claim 1 and comfort cushioning ability, it is characterised in that The relative density of the composite lightweight structure is 5% to 20%.
- 8. the composite lightweight structure of high-energy absorption rate according to claim 1 and comfort cushioning ability, it is characterised in that The material of the inner support is the one or more in aluminium alloy, titanium alloy and epoxide resin material.
- 9. the composite lightweight structure of high-energy absorption rate according to claim 1 and comfort cushioning ability, it is characterised in that The material of the shell is the one or more in aluminium alloy, titanium alloy and epoxide resin material.
- A kind of 10. composite lightweight structure body of high-energy absorption rate and comfort cushioning ability, it is characterised in that including：The composite lightweight structure of high-energy absorption rate and comfort cushioning ability described in claim 1~9 any one, according to pre- If rule is sprawled in two-dimensional directional or stacked according to preset rules in three-dimensional.
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| CN109635320A (en) * | 2018-11-02 | 2019-04-16 | 北京理工大学 | A kind of lattice structure of the high energy dissipation ability based on laser gain material manufacture |
| CN110043594A (en) * | 2019-05-14 | 2019-07-23 | 重庆大学 | A kind of enhanced lattice structure of node |
| CN110087441A (en) * | 2019-05-24 | 2019-08-02 | 上海理工大学 | A kind of radiator of lattice structure |
| CN111531176A (en) * | 2020-05-28 | 2020-08-14 | 西北工业大学 | Damping alloy and lattice composite reinforced vibration suppression structure |
| CN112249509A (en) * | 2020-09-01 | 2021-01-22 | 哈尔滨工业大学（深圳） | Energy-absorbing structure and energy-absorbing buffer device |
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| EP3858555A4 (en) * | 2018-09-26 | 2022-06-15 | Rethink Robotics GmbH | Joint of collaborative robot, and housing therefor |
| US11584027B2 (en) | 2018-09-26 | 2023-02-21 | Rethink Robotics Gmbh | Joint of collaborative robot, and housing therefor |
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| CN110043594A (en) * | 2019-05-14 | 2019-07-23 | 重庆大学 | A kind of enhanced lattice structure of node |
| CN110087441A (en) * | 2019-05-24 | 2019-08-02 | 上海理工大学 | A kind of radiator of lattice structure |
| CN111531176A (en) * | 2020-05-28 | 2020-08-14 | 西北工业大学 | Damping alloy and lattice composite reinforced vibration suppression structure |
| CN111531176B (en) * | 2020-05-28 | 2021-03-26 | 西北工业大学 | Damping alloy and lattice composite reinforced vibration suppression structure |
| CN112249509A (en) * | 2020-09-01 | 2021-01-22 | 哈尔滨工业大学（深圳） | Energy-absorbing structure and energy-absorbing buffer device |
| CN112810130A (en) * | 2020-12-30 | 2021-05-18 | 重庆纳研新材料科技有限公司 | Method for 3D printing of three-dimensional negative Poisson ratio structure without support |
| CN112810130B (en) * | 2020-12-30 | 2022-06-14 | 重庆纳研新材料科技有限公司 | Method for 3D printing of three-dimensional negative Poisson ratio structure without support |
| CN112977894B (en) * | 2021-03-17 | 2022-04-19 | 航天科工空间工程发展有限公司 | Spacecraft buffer device |
| CN112977894A (en) * | 2021-03-17 | 2021-06-18 | 航天科工空间工程发展有限公司 | Spacecraft buffer device |
| US20230015489A1 (en) * | 2021-07-13 | 2023-01-19 | Honeywell Federal Manufacturing & Technologies, Llc | Lattice design for energy absorption and vibration damping applications |
| US11761503B2 (en) * | 2021-07-13 | 2023-09-19 | Honeywell Federal Manufacturing & Technologies, Llc | Lattice design for energy absorption and vibration damping applications |
| CN114962518A (en) * | 2022-05-17 | 2022-08-30 | 中国电子科技集团公司第十研究所 | Lattice cell structure with energy-absorbing and vibration-damping characteristics, planar structure and three-dimensional structure |
| CN114962518B (en) * | 2022-05-17 | 2023-05-26 | 中国电子科技集团公司第十研究所 | Lattice cell structure, plane structure and three-dimensional structure with energy absorption and vibration reduction characteristics |
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