CN108099829A - A kind of more born of the same parents' thin-wall tubes of functionally gradient - Google Patents
A kind of more born of the same parents' thin-wall tubes of functionally gradient Download PDFInfo
- Publication number
- CN108099829A CN108099829A CN201810126409.6A CN201810126409A CN108099829A CN 108099829 A CN108099829 A CN 108099829A CN 201810126409 A CN201810126409 A CN 201810126409A CN 108099829 A CN108099829 A CN 108099829A
- Authority
- CN
- China
- Prior art keywords
- plate
- thin
- thickness
- tube body
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/22—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly cellular material, e.g. solid foam
Abstract
A kind of more born of the same parents' thin-wall tubes of functionally gradient, including thin-walled tube body, thin-walled tube body is by hollow structure that at least one block of plate three forms；Hollow structure includes a cell element region or the multiple cell element regions for the equal decile of the second structural member being made of plate two, and the first structure part formed in the plate one of " rice " set up of character patt ern is set in cell element region, the thickness of each plate is incremented by from the collision head end of thin-wall tube toward fixing end in functional relation；The present invention can be designed to that different-thickness realizes gradient characteristics using the plate of different materials or unified material according to actual needs, can also plate one, two, three be independently arranged into same functions relation graded or different functions relation graded according to actual needs；The structure of the present invention each piece of region in collision all has an identical mechanical property, and this structure can absorb impact kinetic energy and reduce degree of injury by being plastically deformed, and has the characteristics that energy absorbing efficiency height, strong shock resistance, at low cost and can realize lightweight.
Description
Technical field
The invention belongs to Automobile crash safety structure design fields, and in particular to a kind of more born of the same parents' thin-wall tubes of functionally gradient, especially
It is related to a kind of progressive buckling binding mode material by tube wall, and that the progressive more born of the same parents of functionally gradient for collapsing deformation occur is thin
Wall pipe.
Background technology
Thin-wall construction is the most important Collsion proof safety guard block of the delivery vehicles such as automobile.It is main in automobile collision procedure
If the crumple of thin-wall construction stress absorbs energy, playing reduces work of the collision accident to the destruction of vehicle body and protection occupant injury
With.Under different collision angle effects, thin-wall construction easily deforms the phenomenon that unstable.In order to improve car crass peace
Full performance and raising stock utilization reduce the quality of thin-wall construction, and such thin-wall construction optimization section design is crucial.
The limitations such as traditional thin-wall construction deformation pattern is unstable, energy absorbing efficiency is low.Since the compressive property of steel is good, material
Expect that ductility is strong, so the material of most of thin-wall constructions uses high strength steel.The more born of the same parents' thin-wall constructions of functionally gradient are efficiently being inhaled
It can and reduce peak force etc., prominent apparent advantage.Therefore, the more born of the same parents' thin-wall constructions of functionally gradient receive automobile industry
Favor.
Documents 1：202641871 U of CN disclose the thin-walled energy absorbing tube that a kind of diaphragm plate is strengthened, the thin-walled energy
Measure absorption tube and be suitable for all kinds of explosions and impact energy absorbing structure, including a thin-wall tube, in the thin-wall tube at least provided with
One diaphragm plate, diaphragm plate perpendicular to thin-wall tube tube wall, and with the tube wall of thin-wall tube into being fixedly connected.This documents carries
The thin-walled energy absorbing tube of confession absorbs the efficiency of energy by the way that diaphragm plate is set to improve it in pipe, but due to entire tube wall
Thickness is equally distributed, and the energy-absorbing effect under collision situation is bad.
Documents 2：102700488 B of CN disclose a kind of buffering energy-absorbing structure, including hollow metal thin-wall structure,
And light filling metal foaming material or metal honeycomb material in hollow thin-wall construction, hollow metal thin-wall structure
It is fixed together with the light-weight metal porous material of filling by bonding or being brazed, forms a complete buffering energy-absorbing structure；
The density of the metal foaming material of filling in a longitudinal direction is into graded, and the metal honeycomb material of filling is in the longitudinal direction
Aperture size or cellular wall thickness are into graded.Although buffering energy-absorbing thin-wall construction disclosed in this documents and setting
Into graded, but it is by by the aperture size or wall of the density of metal foaming material either metal honeycomb material
Thickness is arranged to graded to realize.The documents in thin-wall construction by filling metal foaming material or honeycomb material
Material, and the wall thickness of cellular material is arranged to graded, foamed material or cellular material belong to new material, cost in itself
It is higher, and the structure of foamed material or cellular material in itself is also relatively fixed, applicable working condition is limited.
A kind of production cost of present invention plan offer is low, and various structures, outer layer thin-walled can be according to reality with endothecium structure part thickness
Border needs to carry out wall thickness and the more born of the same parents' thin-wall tubes of functionally gradient of the various selection of material.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of more born of the same parents' thin-wall tubes of functionally gradient, the more born of the same parents of the functionally gradient are thin
Wall pipe by the progressive buckling binding mode material of tube wall occur it is progressive collapse deformation and can improve its energy absorbing efficiency, have
Have that crash-worthiness is high, stability during collision is strong, light-weighted feature.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme：
There is provided a kind of functionally gradient more born of the same parents' thin-wall tubes, including thin-walled tube body, the thin-walled tube body is by least one piece
The hollow structure that plate three forms；
Scheme one：The hollow structure includes a cell element region, and the cell element region includes being divided equally by first structure part
Several cell element tubular structures gone out, the first structure part is by being in that the plate one of " rice " set up of character patt ern forms；
The first structure part is made of the n section first structure part units of the equal decile set along its longitudinal length, n sections
It is sequentially fixedly connected between first structure part unit, forms thickness the touching by thin-wall tube of the plate one of first structure part unit
Head end is hit toward fixing end in functional relation to be incremented by；
The thin-walled tube body is also made of the n section tube body units of the equal decile set along its longitudinal length, n sections of pipes
It is sequentially fixedly connected between body unit, forms the thickness of plate three of tube body unit from the collision head end of thin-wall tube toward admittedly
Fixed end is incremented by functional relation；
If the length of thin-walled tube body and first structure part is L.
Further,
In scheme one, the hollow structure is circular or square.
Scheme two：The hollow structure is square, and it is equal that the hollow structure includes the second structural member being made of plate two
The two or more cell element regions separated, if each cell element region includes what is separated by first structure part
Dry cell element tubular structure, the first structure part is by being in that the plate one of " rice " set up of character patt ern forms；
The first structure part is made of the n section first structure part units of the equal decile set along its longitudinal length, n sections
It is sequentially fixedly connected between first structure part unit, forms thickness the touching by thin-wall tube of the plate one of first structure part unit
Head end is hit toward fixing end in functional relation to be incremented by；
N the second structural members of the section unit for the equal decile that second structural member is also set along its longitudinal length forms, n sections
It is sequentially fixedly connected between second structural member unit, forms thickness the touching by thin-wall tube of the plate two of the second structural member unit
Head end is hit toward fixing end in functional relation to be incremented by；
The thin-walled tube body is also made of the n section tube body units of the equal decile set along its longitudinal length, n sections of pipes
It is sequentially fixedly connected between body unit, forms the thickness of plate three of tube body unit from the collision head end of thin-wall tube toward admittedly
Fixed end is incremented by functional relation；
If thin-walled tube body, first structure part, the length of the second structural member are L.
Further, in scheme two：
The plate two of second structural member is in " one " or " | " or " ten " or " well " set up of character patt ern or the second structural member by two
It is more than block in horizontal parallel set horizontal plate two and set perpendicular to horizontal plate two and by the equal decile of transverse plate at least
One block of vertical plate two forms.
Further, in above two scheme,
The symmetrical centre of the n sections of each plates one being longitudinally correspondingly arranged is all on the same axis.
Further, in above two scheme,
The symmetrical centre of the n sections of each plates three being longitudinally correspondingly arranged is all on the same axis.
Further, in scheme two,
The symmetrical centre of the n sections of each plates two being longitudinally correspondingly arranged is all on the same axis.
Preferably,
Above-mentioned functional relation is：Ti=T1+Ta*(i-1)；
Wherein：TiRepresent the thickness of i-th section of plate (plate one or plate two or plate three)；1≤i≤n；T1Represent collision
Plate (plate one or plate two or plate three) thickness of head end；TaFor the thickness of plate (plate one or plate two or plate three)
The incremental gradient of degree.
Preferably,
Above-mentioned functional relation is：
Wherein：T(xi) represent the thickness of i-th section of plate (plate one or plate two or plate three)；1≤i≤n； xiIt is i-th
Length of the longitudinal length center line of section plate (plate one or plate two or plate three) apart from thin-wall tube upper end, L is thin-walled
The length of tube body；T1To collide the thickness (minimum thickness) of the plate of head end； TnIt is (maximum thick for the thickness of the plate of fixing end
Degree)；T0≠Tm；A is gradient index, a ≠ 0.
Further,
It is fixedly connected by welding between the first structure part and thin-walled tube body.
Further,
It is fixedly connected by welding between second structural member and thin-walled tube body.
Further,
Between first structure part and the second structural member also by be welded and fixed connection.
Preferably,
It is fixedly connected between the n sections of each plates one being longitudinally correspondingly arranged by laser welding.
Preferably,
It is fixedly connected between the n sections of each plates two being longitudinally correspondingly arranged by laser welding.
Preferably,
It is fixedly connected between the n sections of each plates three being longitudinally correspondingly arranged by laser welding.
Further,
Junction is spliced using high intensity steel laser, so as to reduce the quality of whole thin-wall construction, realizes lightweight.
Preferably,
The thickness for colliding head end is 0.35-3.0mm；
The length of thin-walled tube body (or first structure part or second structural member) is 150-300mm；
The thin-wall tube body central section length of side is 50-80mm.
The present invention has the advantages that：
1st, more born of the same parents' thin-wall tubes of the invention include a cell element region or multiple cell element regions of equal decile, and cell element
Rice font structure part is set in region so that in collision, each piece of region has identical mechanical property, non axial when being subject to
When power is impacted, this structure absorbs impact kinetic energy by being plastically deformed, and reduces degree of injury.
2nd, the thickness of the plate of more born of the same parents' thin-wall tubes of the invention is arranged to change in gradient, makes it in larger load angle
Gradual deformation pattern is generated under scope to be possibly realized, and bending change is resisted so as to further improve it under higher load angle
The bearing capacity of shape pattern；By the change of thickness profile gradient, the Impact Resisting Capability of thin-wall construction accesses larger raising,
Good balance can be obtained in structure lightened and crash-worthiness etc., is a kind of ideal endergonic structure.
3rd, the present invention in plate one, plate two, plate three according to actual needs using different materials (such as：High intensity
Steel and Medium And Low Strength Steels) it is designed to different-thickness or is designed to that different-thickness realizes gradient characteristics using same material.In addition,
Graded functional relation between plate one, plate two, plate three can be independently arranged into same functions according to actual needs
Relation graded or different functions relation graded.Gradient characteristics can make engineers according to different typical structures
Performance characteristics and requirement customize out specific vehicle body parts.
4th, the more born of the same parents' thin-wall tubes of functionally gradient provided by the invention are arranged to different sections (layer) number according to specific requirements, favorably
In the absorption of energy；And the linear gradient of thickness between different sections is incremented by, the side become larger using this walled thickness
Method can meet requirement of strength design, can also the progressive crumple deformation of inducement structure.
5th, the plate that different sections are longitudinally correspondingly arranged can not only improve the suction of thin-wall tube by the way of non-single thickness
Energy efficiency, and material can be saved, realize lightweight.
6th, the present invention forms the symmetrical centre of all plates (plate one or plate two or plate three) of structural member same
On one axis, it can guarantee that material is not susceptible to Euler's deformation.
7th, the present invention can to avoid or larger collision peak force is delayed to occur, time position first deforms and causes in avoiding
The phenomenon that energy-absorbing is unstable.
8th, function formula changes the thickness between different sections of the invention in gradient, can be used for the thin-walled of side collision
In structure, structural loads efficiency CFE is improved, reduces average impact fmean。
9th, thin-wall tube of the invention is made of more born of the same parents' tubular structures, is adapted to the oblique angle of multi-state, impact resistance
Enhancing.
10th, the present invention with traditional buffering energy-absorbing structure phase homogenous quantities rigid wall under identical impact velocity
Energy-absorbing effect is compared, and the present invention has better energy-absorbing effect.
11st, the present invention has following advantage compared with documents 2：The thin-wall tube of the present invention is made of a variety of plates,
The structure of plate composition is changeable compared to the inherent structure more form of the new materials such as cellular material, and all kinds of plates (plate one,
Plate two, plate three) material, thickness and graded functional relation can be independently arranged, more multi-state is adapted to, to not
With the collision of angle, there can be better effect；The present invention can be used conventional steel plates and realize graded, compared to documents 2
The new materials such as cellular material, cost is lower, and practicability is stronger.
The mould molding technology of different-thickness can be used in production in the present invention, ascending according to the thickness of plate
Order is welded and fixed composition successively, during assembling, can plate three first be surrounded hollow structure, is then embedded in using plate two-phase
Hollow structure is divided into multiple cell element regions in hollow structure, then plate two is assembled into the second structural member of meter font, phase
In each cell element region.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to these attached drawings.
Fig. 1 is the dimensional structure diagram of the more born of the same parents' thin-wall tubes of functionally gradient of the embodiment of the present invention；
A-A diagrammatic cross-sections in Fig. 2 Fig. 1；
Fig. 3 a are the cross-sectional views of traditional thin-wall tube；
Fig. 3 b are the cross-sectional views of the more born of the same parents' thin-wall tubes of functionally gradient of the embodiment of the present invention；
Fig. 4 is the energy absorption curve comparison diagram of the more born of the same parents' thin-wall tubes of functionally gradient of the embodiment of the present invention and traditional thin-wall tube；
The more born of the same parents' thin-wall tubes of Fig. 5 functionally gradients of the embodiment of the present invention and the collision force-time curve of traditional thin-wall tube compare
Figure.
Specific embodiment
Invention is further illustrated with reference to embodiment and attached drawing, but is not limited to the scope of the present invention.
Embodiment 1
As shown in Figs. 1-5, the present embodiment provides a kind of more born of the same parents' thin-walled rectangular tubes of functionally gradient, including thin-walled tube body, institute
The hollow structure that thin-walled tube body is the square surrounded by four blocks of plates 3 101 is stated, the hollow structure is included by being in " ten "
Four cell element regions that second structural member of horizontal plate 2 201 and vertical plate 2 202 composition of set up of character patt ern separates,
Each cell element region include by be in " rice " set up of character patt ern eight blocks of plates one (301,302,303,304,305,306,307,
308) eight cell element tubular structures that the first structure part of composition separates, the cross section of the cell element tubular structure is triangle
Shape.This structure setting so that each piece of region has identical mechanical property in collision, impacts when being subject to non-axial force
When, this structure absorbs impact kinetic energy by being plastically deformed, and reduces degree of injury.
The first structure part is made of 6 sections of first structure part units of the equal decile set along its longitudinal length, 6 sections
It is sequentially fixedly connected between first structure part unit, forms thickness (one 301- of plate of the plate one of first structure part unit
308 thickness phase)；The thickness of the plate one of composition first structure part unit is in letter from the collision head end of thin-wall tube toward fixing end
Number relation is incremented by；
6 section of second structural member unit of the equal decile that second structural member is also set along its longitudinal length forms, 6 sections
Sequentially be fixedly connected between second structural member unit, form the second structural member unit plate two thickness (plate 2 201,
202 thickness is equal) it is incremented by from the collision head end of thin-wall tube toward fixing end in functional relation；Second structural member in the present embodiment
It is made of the plate 2 201,202 for being in " ten " set up of character patt ern.
The thin-walled tube body is also made of 6 sections of tube body units of the equal decile set along its longitudinal length, 6 sections of pipes
It is sequentially fixedly connected between body unit, the thickness for forming four blocks of plates 3 101 of tube body unit is first by the collision of thin-wall tube
It holds toward fixing end and is incremented by functional relation；
If the length of thin-walled tube body is Lg, first structure part, the length of the second structural member are respectively L1、L2, Lg=L1=
L2。
The symmetrical centre of 6 sections of each plates one being longitudinally correspondingly arranged all on the same axis, can guarantee that material is not susceptible to
Euler deforms.I.e.：Plate 1 is divided into 6 sections in the longitudinal direction, and the thickness from paragraph 1 to the 6th section is incremented by functional relation,
And each section symmetrical centre all on the same axis；One 302-308 of plate is similarly to be divided into 6 sections in the longitudinal direction, from
Paragraph 1 to the 6th section of thickness is incremented by functional relation, and each section symmetrical centre all on the same axis.
The symmetrical centre of 6 sections of each plates two being longitudinally correspondingly arranged also all on the same axis, can guarantee that material is not easy to send out
Raw Euler's deformation.I.e.：Horizontal plate 2 201 is divided into 6 sections in the longitudinal direction, is closed from paragraph 1 to the 6th section of thickness in function
System be incremented by, and each section symmetrical centre on the same axis；Vertical plate 2 202 is similarly to be divided into 6 in the longitudinal direction
Section, the thickness from paragraph 1 to the 6th section is incremented by functional relation, and each section symmetrical centre on the same axis.
The symmetrical centre of 6 sections of each plates three being longitudinally correspondingly arranged also all on the same axis, can guarantee that material is not easy to send out
Raw Euler's deformation.I.e.：Four blocks of plates 3 101 are divided into 6 sections in the longitudinal direction, are closed from paragraph 1 to the 6th section of thickness in function
System be incremented by, and each section symmetrical centre on the same axis.
Plate one in the present embodiment, plate two, plate three using same material (such as：High strength steel and Medium And Low Strength Steels)
It is designed to that different-thickness realizes gradient characteristics.And graded functional relation is configured all in accordance with equation below：
Ti=T1+Ta*(i-1)；
Wherein：TiRepresent the thickness of i-th section of plate (plate one or plate two or plate three)；1≤i≤n；T1Represent collision
Plate (plate one or plate two or plate three) thickness of head end；TaFor the thickness of plate (plate one or plate two or plate three)
The incremental gradient of degree.
It is fixedly connected by welding between the first structure part and thin-walled tube body；Second structural member and thin-walled
It is fixedly connected by welding between tube body；Between first structure part and the second structural member also by be welded and fixed connection；6 sections
It is fixedly connected between each plate one being longitudinally correspondingly arranged by laser welding；Between 6 sections of each plates two being longitudinally correspondingly arranged
It is fixedly connected by laser welding；It is fixedly connected between 6 sections of each plates three being longitudinally correspondingly arranged by laser welding；Connection
Place is spliced using high intensity steel laser, so as to reduce the quality of whole thin-wall construction, realizes lightweight.
As shown in Fig. 2, the axial width of plate, which is non-homogeneous presents, increases distribution, and the corresponding each plate in longitudinal direction
The symmetrical centre of different sections is located on same axis.Consider from secure context, intensity is arranged to successively incremental form, thickness
It is linearly increasing relation between T1, T2, T3, T4, T5, T6, yield strength is also increased therewith so that material occurs gradually
Deformation is collapsed into ground, fully absorbs energy.
By more born of the same parents' thin-walled rectangular tubes provided in this embodiment, finite element model is established in hypermesh softwares, the knot
The length L of structure is 300mm, since the thickness of each plate that is longitudinally correspondingly arranged is into graded, and the difference of each plate
The symmetrical centre of section is located on same axis.Axial in structure sets six thickness, forms thickness gradient, each block of plate
(plate 3 101, two 201-202 of plate, one 301-308 of plate) has corresponding T1, T2, T3, T4, T5, T6 to successively increase,
In order to preferably carry out analogue simulation in the present embodiment, plate 3 101, two 201-202 of plate, one 301-308 of plate are corresponded to
T1, T2, T3, T4, T5, T6 be arranged to the same, correspond to 0.4,0.52,0.64,0.76,0.88,1.0mm, due to each plate
Graded it is little, in emulation, the equal carry out computing of B1, B2, specific size B1=B2=80mm are set.
Further, in order to verify the more born of the same parents' rectangular tubes of functionally gradient thin-walled provided in this embodiment than tradition it is thin without gradient
The crash-worthiness of wall pipe is good, realizes following steps：
Step 1：As shown in figure 4, the finite element of the more born of the same parents' rectangular tubes of the present embodiment functionally gradient thin-walled and traditional thin-wall construction
Simulation result is emphasized that using same material, and thin-wall construction is squeezed by force with identical speed with the rigidity of phase homogenous quantities,
The axial pressure feedback process of thin-wall tube structure is that collision head end first deforms, and analogue simulation proves：The thin-wall tube of graded
Structure changes compared to tradition without thickness gradient thin since thickness distribution is incremented by from collision head end toward fixing end in functional relation
Wall pipe, in collision process, it is easier to make thin-wall tube structure that gradual folded deformation occur, be conducive to fully absorb energy, and
The more born of the same parents' thin-wall constructions of traditional single thickness then occur the whole formula that collapses and deform, and collision process energy absorption is insufficient.
Step 2：The compressive load peak force P of the more born of the same parents' rectangular tubes of functionally gradient thin-walled and traditional thin-wall constructionmax, mean pressure
Contracting load pm, decrement h, absorb interior energy Eint, compression force efficiency CFE correction datas it is as shown in the table：
It can obtain to draw a conclusion by data in upper table：The average peak force of gradient thin-shell absorption structure is more than traditional thin-walled
The average peak force of endergonic structure illustrates that the whole process of the collision of the structure of the present invention is better than traditional Structural Crashworthiness, and
Structural collision peak force of the present invention is less than the collision peak force of traditional structure, and relatively safety, entire collision process is absorbed interior
The interior energy that traditional structure is absorbed can be more than, structural collision compression force efficiency of the present invention is imitated much larger than the compression stress of traditional structure
Rate, in short, can show that Structural Crashworthiness of the present invention is better than the crash-worthiness of traditional structure from data.
To sum up, the more born of the same parents' thin-wall tube structures of functionally gradient of the invention with traditional buffering energy-absorbing structure in phase homogenous quantities
Rigid wall is compared with the energy-absorbing effect under identical impact velocity, and the present invention has better energy-absorbing effect.The thin-walled of the present invention
Pipe is made of more born of the same parents' tubular structures, is adapted to the oblique angle of multi-state, impact resistance enhancing；Using non-single thickness
Mode can not only improve the energy absorbing efficiency of thin-wall tube, and can save material, realize lightweight.
As other preferred embodiments, the plate of the second structural member can be that the transverse plate set in " one " will be hollow
Structure is divided into two cell element regions, and each cell element region is by being in that the first structure part of " rice " set up of character patt ern is divided into 8 triangles
The cell element tubular structure of shape；
Or second structural member be in " | " set vertical plate hollow structure is divided into two cell element regions, each born of the same parents
First region is by being in cell element tubular structure that the first structure part of " rice " set up of character patt ern is divided into 8 triangles；
Or second structural member be in two pieces of transverse plates of " well " set up of character patt ern and two vertical plate composition, by hollow knot
Structure is divided into 9 cell element regions, and each cell element region is by being in that the first structure part of " rice " set up of character patt ern is divided into 8 triangles
The cell element tubular structure of shape；
Or second the transverse plate that is arranged in parallel by two pieces of level above of structural member with being set perpendicular to transverse plate and by horizontal stroke
To at least one piece of vertical plate composition of the equal decile of plate.
As other preferred embodiments, thickness increasing function relation can be changed according to actual needs, it is such as right
Number functional relation：
Wherein：T(xi) represent the thickness of i-th section of plate (plate one or plate two or plate three)；1≤i≤n； xiIt is i-th
Length of the longitudinal length center line of section plate (plate one or plate two or plate three) apart from thin-wall tube upper end, L is thin-walled
The length of tube body；T1To collide the thickness (minimum thickness) of the plate of head end； TnIt is (maximum thick for the thickness of the plate of fixing end
Degree)；T0≠Tm；A is gradient index, a ≠ 0.
The thickness of plate one, plate two, plate three can also be arranged to different gradient function relations.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent defines.
Claims (10)
1. a kind of more born of the same parents' thin-wall tubes of functionally gradient, which is characterized in that
Including thin-walled tube body, the thin-walled tube body is by hollow structure that at least one block of plate three forms；
The hollow structure includes a cell element region, and the cell element region includes several cell elements separated by first structure part
Tubular structure, the first structure part is by being in that the plate one of " rice " set up of character patt ern forms；
The first structure part is made of the n section first structure part units of the equal decile set along its longitudinal length, n the first knots of section
Sequentially be fixedly connected between member unit, form first structure part unit plate one thickness from thin-wall tube collision head end toward
Fixing end is incremented by functional relation；
The thin-walled tube body is also made of the n section tube body units of the equal decile set along its longitudinal length, n sections of tube body lists
Sequentially be fixedly connected between member, form tube body unit plate three thickness from the collision head end of thin-wall tube toward fixing end be in letter
Number relation is incremented by；
If the length of thin-walled tube body and first structure part is L.
2. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 1, which is characterized in that
The hollow structure is circular or square.
3. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 1, which is characterized in that
The hollow structure to be square, separate two of the second structural member that the hollow structure includes being made of plate two or
More than two cell element regions, each cell element region include several cell element tubulose knots separated by first structure part
Structure, the first structure part is by being in that the plate one of " rice " set up of character patt ern forms；
The first structure part is made of the n section first structure part units of the equal decile set along its longitudinal length, n the first knots of section
Sequentially be fixedly connected between member unit, form first structure part unit plate one thickness from thin-wall tube collision head end toward
Fixing end is incremented by functional relation；
N the second structural members of the section unit for the equal decile that second structural member is also set along its longitudinal length forms, n the second knots of section
Sequentially be fixedly connected between member unit, form the second structural member unit plate two thickness from thin-wall tube collision head end toward
Fixing end is incremented by functional relation；
The thin-walled tube body is also made of the n section tube body units of the equal decile set along its longitudinal length, n sections of tube body lists
Sequentially be fixedly connected between member, form tube body unit plate three thickness from the collision head end of thin-wall tube toward fixing end be in letter
Number relation is incremented by；
If thin-walled tube body, first structure part, the length of the second structural member are L.
4. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3, which is characterized in that
The plate two of second structural member in " one " or " | " or " ten " or " well " set up of character patt ern or the second structural member by two pieces with
The upper horizontal plate two in horizontal parallel setting perpendicular to horizontal plate two with setting and by least one piece of the equal decile of transverse plate
Vertical plate two forms.
5. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 1-4 any one, which is characterized in that
The symmetrical centre of the n sections of each plates one being longitudinally correspondingly arranged is all on the same axis；
The symmetrical centre of the n sections of each plates three being longitudinally correspondingly arranged is all on the same axis.
6. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3 or 4, which is characterized in that
The symmetrical centre of the n sections of each plates two being longitudinally correspondingly arranged is all on the same axis.
7. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3 or 4, which is characterized in that
Above-mentioned functional relation is：Ti=T1+Ta*(i-1)；
Wherein：TiRepresent the thickness of i-th section of plate；1≤i≤n；T1Represent the panel thickness of collision head end；TaFor the thickness of plate
Incremental gradient, the plate is plate one or plate two or plate three.
8. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3 or 4, which is characterized in that
Above-mentioned functional relation is：
Wherein：T(xi) represent the thickness of i-th section of plate；1≤i≤n；xiIt is the longitudinal length center line of i-th section of plate apart from thin
The length of wall pipe upper end, L are the length of thin-walled tube body；T1To collide the thickness of the plate of head end；TnFor the plate of fixing end
Thickness；T0≠Tm；A is gradient index, a ≠ 0；The plate is plate one or plate two or plate three.
9. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3 or 4, which is characterized in that
It is fixedly connected by welding between the first structure part and thin-walled tube body；
It is fixedly connected by welding between second structural member and thin-walled tube body；
Between first structure part and the second structural member also by be welded and fixed connection.
10. a kind of more born of the same parents' thin-wall tubes of functionally gradient according to claim 3 or 4, which is characterized in that
It is fixedly connected between the n sections of each plates one being longitudinally correspondingly arranged by laser welding；
It is fixedly connected between the n sections of each plates two being longitudinally correspondingly arranged by laser welding；
It is fixedly connected between the n sections of each plates three being longitudinally correspondingly arranged by laser welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126409.6A CN108099829B (en) | 2018-02-08 | 2018-02-08 | Functional gradient multi-cell thin-wall tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810126409.6A CN108099829B (en) | 2018-02-08 | 2018-02-08 | Functional gradient multi-cell thin-wall tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108099829A true CN108099829A (en) | 2018-06-01 |
| CN108099829B CN108099829B (en) | 2023-09-12 |
Family
ID=62222115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810126409.6A Active CN108099829B (en) | 2018-02-08 | 2018-02-08 | Functional gradient multi-cell thin-wall tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108099829B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263789A (en) * | 2018-09-14 | 2019-01-25 | 上海交通大学 | A kind of lashing bridge based on functionally gradient thin-wall tube |
| CN113978403A (en) * | 2021-11-17 | 2022-01-28 | 一汽解放汽车有限公司 | Collision protection assembly and commercial vehicle |
| CN114934965A (en) * | 2022-04-27 | 2022-08-23 | 梧州学院 | Multi-cell energy absorption structure with double gradient levels |
| US11597441B2 (en) * | 2018-09-07 | 2023-03-07 | Nippon Steel Corporation | Automobile structural member |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11351305A (en) * | 1998-06-12 | 1999-12-24 | Toyobo Co Ltd | Shock absorber and shock absorbing method using the same |
| KR20070031497A (en) * | 2005-09-14 | 2007-03-20 | 현대자동차주식회사 | Side member for vehicle |
| US7550189B1 (en) * | 2004-08-13 | 2009-06-23 | Hrl Laboratories, Llc | Variable stiffness structure |
| CN102043883A (en) * | 2010-12-29 | 2011-05-04 | 长沙理工大学 | Material breakage constraint-based continuum structure topology design modeling and optimization design method |
| CN103958924A (en) * | 2011-11-28 | 2014-07-30 | 帝人株式会社 | Shock absorption member |
| CN104890604A (en) * | 2015-06-23 | 2015-09-09 | 湖南大学 | Multi-cell automobile energy-absorbing buffer device |
| CN105398099A (en) * | 2015-10-26 | 2016-03-16 | 湖南大学 | Gradient honeycomb complex, and preparation method and application structure thereof |
| DE102015011357A1 (en) * | 2015-08-29 | 2016-03-17 | Daimler Ag | Energy absorption element for a motor vehicle, in particular a passenger car |
| CN107002913A (en) * | 2014-11-25 | 2017-08-01 | 特诺尔艾佩斯公司 | Multilayer inflatable hose |
| CN109263789A (en) * | 2018-09-14 | 2019-01-25 | 上海交通大学 | A kind of lashing bridge based on functionally gradient thin-wall tube |
-
2018
- 2018-02-08 CN CN201810126409.6A patent/CN108099829B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11351305A (en) * | 1998-06-12 | 1999-12-24 | Toyobo Co Ltd | Shock absorber and shock absorbing method using the same |
| US7550189B1 (en) * | 2004-08-13 | 2009-06-23 | Hrl Laboratories, Llc | Variable stiffness structure |
| KR20070031497A (en) * | 2005-09-14 | 2007-03-20 | 현대자동차주식회사 | Side member for vehicle |
| CN102043883A (en) * | 2010-12-29 | 2011-05-04 | 长沙理工大学 | Material breakage constraint-based continuum structure topology design modeling and optimization design method |
| CN103958924A (en) * | 2011-11-28 | 2014-07-30 | 帝人株式会社 | Shock absorption member |
| CN107002913A (en) * | 2014-11-25 | 2017-08-01 | 特诺尔艾佩斯公司 | Multilayer inflatable hose |
| CN104890604A (en) * | 2015-06-23 | 2015-09-09 | 湖南大学 | Multi-cell automobile energy-absorbing buffer device |
| DE102015011357A1 (en) * | 2015-08-29 | 2016-03-17 | Daimler Ag | Energy absorption element for a motor vehicle, in particular a passenger car |
| CN105398099A (en) * | 2015-10-26 | 2016-03-16 | 湖南大学 | Gradient honeycomb complex, and preparation method and application structure thereof |
| CN109263789A (en) * | 2018-09-14 | 2019-01-25 | 上海交通大学 | A kind of lashing bridge based on functionally gradient thin-wall tube |
Non-Patent Citations (7)
| Title |
|---|
| "分层功能梯度蜂窝结构冲击动力学响应的研究", 中国优秀硕士学位论文全文数据库基础科学辑, no. 01 * |
| "基于概率-区间混合模型的汽车耐撞性结构可靠性优化设计", 中国优秀硕士学位论文全文数据库工程科技Ⅱ辑, no. 06 * |
| YUE WANG; HE MAO; QIYANG ZUO; KAI HE; RUXU DU, 2016 IEEE INTERNATIONAL CONFERENCE ON INFORMATION AND AUTOMATION (ICIA), pages 637 - 641 * |
| 刘颖;何章权;吴鹤翔;张新春;: "分层递变梯度蜂窝材料的面内冲击性能", 爆炸与冲击, no. 03, pages 4 - 10 * |
| 张勇;徐翔;李奇;鲁明皓;廖水容;: "新颖变截面多胞薄壁结构的耐撞性研究", 中国公路学报, no. 07, pages 155 - 162 * |
| 张勇;曾意;徐翔;林继铭;赖雄鸣;: "环形梯度多胞结构的多工况耐撞性研究", 中国机械工程, no. 04, pages 111 - 118 * |
| 樊喜刚;尹西岳;陶勇;陈明继;方岱宁;: "梯度蜂窝面外动态压缩力学行为与吸能特性研究", 固体力学学报, no. 02, pages 27 - 35 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11597441B2 (en) * | 2018-09-07 | 2023-03-07 | Nippon Steel Corporation | Automobile structural member |
| CN109263789A (en) * | 2018-09-14 | 2019-01-25 | 上海交通大学 | A kind of lashing bridge based on functionally gradient thin-wall tube |
| CN109263789B (en) * | 2018-09-14 | 2020-06-02 | 上海交通大学 | Ligature bridge based on functional gradient thin-walled tube |
| CN113978403A (en) * | 2021-11-17 | 2022-01-28 | 一汽解放汽车有限公司 | Collision protection assembly and commercial vehicle |
| CN114934965A (en) * | 2022-04-27 | 2022-08-23 | 梧州学院 | Multi-cell energy absorption structure with double gradient levels |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108099829B (en) | 2023-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108099829A (en) | A kind of more born of the same parents' thin-wall tubes of functionally gradient | |
| CN105799231B (en) | The core filled composite material of opposite hemispherical Shell scapus born of the same parents' structure | |
| CN208053276U (en) | A kind of more born of the same parents' thin-wall tubes of functionally gradient | |
| CN111022538B (en) | Multifunctional gradient energy absorption box | |
| CN102995789B (en) | Built-in section steel column-lattice steel beam-mesh steel support concrete wall body and manufacturing method | |
| CN102700488A (en) | Buffering energy-absorbing structure | |
| CN110541906B (en) | Double-arrow type negative Poisson ratio structure body | |
| CN110843709A (en) | Novel sandwich structure automobile front anti-collision beam and assembly | |
| CN102704595A (en) | Shear wall with 'profile steel column-steel beam-steel support' embedded between steel tube concrete columns and manufacturing method | |
| CN112158159B (en) | Automobile collision energy absorption box | |
| JPWO2019176792A1 (en) | Floor structure | |
| CN110843710B (en) | Automobile collision energy-absorbing sandwich structure | |
| Sadjad et al. | Crashworthiness of double-cell conical tubes with different cross sections subjected to dynamic axial and oblique loads | |
| Li et al. | Energy absorption characteristics of crash box of new honeycomb core structure with foam-filled | |
| CN107600012A (en) | A kind of automotive front end endergonic structure based on customizing functions | |
| CN109305120B (en) | Assembled self-locking multi-cell energy absorber | |
| CN207535850U (en) | A kind of automotive front end endergonic structure based on customizing functions | |
| CN107628115A (en) | A kind of automobile Varying-thickness, variable cross-section front rail structure for customizing functions | |
| CN109720290B (en) | Energy-absorbing pipe of imitative seagull feather axle structure | |
| CN211648885U (en) | Multifunctional gradient energy absorption box | |
| CN211417177U (en) | Novel sandwich structure automobile front anti-collision beam and assembly | |
| CN205836934U (en) | A kind of automobile front longitudinal beam | |
| CN210309870U (en) | Composite filling honeycomb aluminum core and automobile door adopting same | |
| CN210310262U (en) | Automobile engine hood for improving pedestrian safety | |
| CN206682201U (en) | Endergonic structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |