CN208053276U - 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
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- CN208053276U CN208053276U CN201820220590.2U CN201820220590U CN208053276U CN 208053276 U CN208053276 U CN 208053276U CN 201820220590 U CN201820220590 U CN 201820220590U CN 208053276 U CN208053276 U CN 208053276U
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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 are 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, the first structure part constituted 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 toward fixing end in functional relation from the collision head end of thin-wall tube；The utility model 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 identical or different functions relationship graded according to actual needs；The structure of the utility model each piece of region mechanical property all having the same in collision, this structure can absorb impact kinetic energy by plastic deformation reduces degree of injury, has the characteristics that energy absorbing efficiency height, strong shock resistance, at low cost and can realize lightweight.
Description
Technical field
The utility model belongs to Automobile crash safety structure design field, and in particular to a kind of more born of the same parents' thin-walleds of functionally gradient
It is more that pipe more particularly to a kind of progressive buckling binding mode by tube wall so that the progressive functionally gradient for collapsing deformation occurs for material
Born of the same parents' thin-wall tube.
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 thin-wall construction stress crumple absorbs energy, the work for reducing collision accident to the destruction of vehicle body and protection occupant injury is played
With.Under different collision angle effects, thin-wall construction easily deforms unstable phenomenon.In order to improve automotive crash safety
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
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 in effective energy-absorbing
And reduce peak force etc., prominent apparent advantage.Therefore, the more born of the same parents' thin-wall constructions of functionally gradient receive the blueness of automobile industry
It looks at.
Documents 1：202641871 U of CN disclose a kind of thin-walled energy absorbing tube that diaphragm plate is reinforced, the thin-walled energy
Absorption tube is suitable for all kinds of explosions and impact energy absorbing structure, including a thin-wall tube, and the thin-wall tube is interior at least provided with one
A diaphragm plate, diaphragm plate perpendicular to thin-wall tube tube wall, and with the tube wall of thin-wall tube at being fixedly connected.What this documents provided
Thin-walled energy absorbing tube improves the efficiency of its absorption energy by the way that diaphragm plate is arranged in pipe, but since entire pipe thickness is
Equally distributed, 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 with
The light-weight metal porous material of filling is fixed together by bonding or being brazed, and forms a complete buffering energy-absorbing structure；It fills out
The density of the metal foaming material filled in a longitudinal direction is at graded, the aperture of the metal honeycomb material of filling in the longitudinal direction
Size or cellular wall thickness are at graded.Although buffering energy-absorbing thin-wall construction disclosed in this documents is also arranged to gradient
Variation, but be by the way that by the density of metal foaming material, either the aperture size of metal honeycomb material or wall thickness are arranged to
Graded is realized.The documents in thin-wall construction by filling metal foaming material or cellular material, and by bee
The wall thickness of nest material is arranged to graded, and foamed material or cellular material itself belong to new material, and cost is higher, and foam
The structure of material or cellular material itself is also relatively fixed, and applicable working condition is limited.
A kind of quasi- production cost of offer of the utility model is low, and various structures, outer layer thin-walled can root with endothecium structure part thickness
The more born of the same parents' thin-wall tubes of functionally gradient of wall thickness and the various selection of material are carried out according to actual needs.
Utility model content
The technical problem to be solved by 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
Thin-wall tube by the progressive buckling binding mode of tube wall allow material occur it is progressive collapse deformation and improve its energy absorbing efficiency, have
Have that crash-worthiness is high, stability when collision is strong, light-weighted feature.
In order to solve the above-mentioned technical problem, the utility model uses following technical scheme：
A kind of more born of the same parents' thin-wall tubes of functionally gradient, including thin-walled tube body are provided, 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 for the equal decile being arranged along its longitudinal length, n sections
It is sequentially fixedly connected between first structure part unit, constitutes the thickness of the plate one of first structure part unit by the collision of thin-wall tube
Head end is incremented by toward fixing end in functional relation；
The thin-walled tube body is also made of the n section tube body units for the equal decile being arranged along its longitudinal length, n sections of pipes
Sequentially be fixedly connected between body unit, constitute tube body unit plate three thickness from the collision head end of thin-wall tube toward fixation
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 round or rectangular.
Scheme two：The hollow structure is rectangular, and the hollow structure includes that the second structural member for being made of plate two is equal
The two or more cell element regions separated, each cell element region include separated by first structure part it is several
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 for the equal decile being arranged along its longitudinal length, n sections
It is sequentially fixedly connected between first structure part unit, constitutes the thickness of the plate one of first structure part unit by the collision of thin-wall tube
Head end is incremented by toward fixing end in functional relation；
N section second structural member unit of second structural member also along the equal decile of its longitudinal length setting forms, n sections
It is sequentially fixedly connected between second structural member unit, constitutes the thickness of the plate two of the second structural member unit by the collision of thin-wall tube
Head end is incremented by toward fixing end in functional relation；
The thin-walled tube body is also made of the n section tube body units for the equal decile being arranged along its longitudinal length, n sections of pipes
Sequentially be fixedly connected between body unit, constitute tube body unit plate three thickness from the collision head end of thin-wall tube toward fixation
End is incremented by functional relation；
If the length of thin-walled tube body, first structure part, the second structural member is 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
More than block at least in the lateral plate two of horizontal parallel setting and perpendicular to the setting of lateral plate two and by the equal decile of transverse plate
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)
Incremental gradient.
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；T1For the thickness (minimum thickness) of the plate of collision 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 by laser welding between the n sections of each plates one being longitudinally correspondingly arranged.
Preferably,
It is fixedly connected by laser welding between the n sections of each plates two being longitudinally correspondingly arranged.
Preferably,
It is fixedly connected by laser welding between the n sections of each plates three being longitudinally correspondingly arranged.
Further,
Junction is spliced using high intensity steel laser, 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 utility model has the advantages that：
1, more born of the same parents' thin-wall tubes of the utility model include a cell element region or multiple cell element regions of equal decile, and born of the same parents
Rice font structure part is set in first region so that each piece of region mechanical property having the same in collision, when by non-axis
When being impacted to power, this structure absorbs impact kinetic energy by plastic deformation, reduces degree of injury.
2, the thickness of the plate of more born of the same parents' thin-wall tubes of the utility model is arranged to change in gradient, makes it in larger load angle
Gradual deformation pattern is generated under degree range to be possibly realized, and bending change is resisted to further increase 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,
Structure lightened and crash-worthiness etc. can obtain good balance, be a kind of ideal endergonic structure.
3, the plate one in the utility model, plate two, plate three according to actual needs use different materials (such as：It is high
Strength steel and Medium And Low Strength Steels) it is designed to different-thickness, or it is designed to that different-thickness realizes gradient characteristics using same material.This
Outside, the graded functional relation between plate one, plate two, plate three can be independently arranged into identical letter according to actual needs
Number relationship graded or different functions relationship graded.Gradient characteristics can make engineers according to different typical structures
Performance characteristics and requirement customize out specific vehicle body parts.
4, the more born of the same parents' thin-wall tubes of functionally gradient provided by the utility model are arranged to different sections (layer) number according to specific requirements,
Be conducive to the absorption of energy；And the linear gradient of thickness between different sections is incremented by, and is become larger using this walled thickness
Method can meet requirement of strength design, can also the progressive crumple deformation of inducement structure.
5, the plate that different sections are longitudinally correspondingly arranged can not only improve the energy-absorbing of thin-wall tube by the way of non-single thickness
Efficiency, and material can be saved, realize lightweight.
6, the symmetrical centre of all plates (plate one or plate two or plate three) of the utility model composition structural member is equal
On the same axis, it can guarantee that material is not susceptible to Euler's deformation.
7, the utility model can to avoid or delay larger collision peak force to occur, lower position, which first deforms, in avoiding leads
Cause the phenomenon of energy-absorbing shakiness.
8, function formula changes the thickness between the different sections of the utility model in gradient, can be used for the thin of side collision
In wall construction, structural loads efficiency CFE is improved, reduces average impact fmean。
9, the thin-wall tube of the utility model is made of more born of the same parents' tubular structures, is adapted to the oblique angle of multi-state, shock resistance
Ability enhances.
10, the utility model and traditional buffering energy-absorbing structure in the rigid wall of phase homogenous quantities under identical impact velocity
Energy-absorbing effect compare, the utility model have better energy-absorbing effect.
11, the utility model has following advantage compared with documents 2：The thin-wall tube of the utility model is by a variety of plates
Part forms, and 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 plate (plates
Part one, plate two, plate three) material, thickness and graded functional relation can be independently arranged, adapt to more multi-state,
Collision to different angle can have better effect；The utility model can be used conventional steel plates realize graded, compared to pair
The new materials such as the cellular material than file 2, cost is lower, and practicability is stronger.
The utility model production when, the mold forming technique of different-thickness can be used, according to plate thickness by it is small to
Big sequence is welded and fixed composition successively, when assembling, can plate three first be surrounded hollow structure, then use plate two-phase embedding
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,
Mutually in each cell element region.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be 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
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
Fig. 1 is the dimensional structure diagram of the more born of the same parents' thin-wall tubes of the utility model embodiment functionally gradient；
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 the utility model embodiment functionally gradient；
Fig. 4 is that the more born of the same parents' thin-wall tubes of the utility model embodiment functionally gradient and the energy absorption curve of traditional thin-wall tube compare
Figure；
The collision force-time curve pair of the more born of the same parents' thin-wall tubes of Fig. 5 the utility model embodiment functionally gradients and traditional thin-wall tube
Than figure.
Specific implementation mode
Utility model is further illustrated with reference to embodiment and attached drawing, but is not limited to the model of the utility model
It encloses.
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, institutes
The hollow structure that thin-walled tube body is the square surrounded by four blocks of plates 3 101 is stated, the hollow structure includes by being in " ten "
Four cell element regions that second structural member of lateral plate 2 201 and vertical plate 2 202 composition of set up of character patt ern separates, often
A cell element region includes by being in eight blocks of plates one (301,302,303,304,305,306,307,308) group of " rice " set up of character patt ern
At eight cell element tubular structures separating of first structure part, the cross section of the cell element tubular structure is triangle.It is this
Structure setting makes each piece of region mechanical property having the same in collision, when being impacted by non-axial force, this knot
Structure absorbs impact kinetic energy by plastic deformation, reduces degree of injury.
The first structure part is made of 6 sections of first structure part units of the equal decile being arranged along its longitudinal length, 6 sections
It is sequentially fixedly connected between first structure part unit, constitutes thickness (one 301- of plate of the plate one of first structure part unit
308 thickness is equal)；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 relationship is incremented by；
6 section second structural member unit of second structural member also along the equal decile of its longitudinal length setting forms, 6 sections
Sequentially be fixedly connected between second structural member unit, constitute 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；In the present embodiment the second structural member by
It is formed in the plate 2 201,202 of " 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 being arranged along its longitudinal length, 6 sections of pipes
It is sequentially fixedly connected between body unit, the thickness for constituting 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 second structural member length be 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, is incremented by functional relation from paragraph 1 to the 6th section of thickness,
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 thickness in functional relation be incremented by, 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.：Lateral plate 2 201 is divided into 6 sections in the longitudinal direction, is closed in function from paragraph 1 to the 6th section of thickness
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, from paragraph 1 to the 6th section of thickness in functional relation be incremented by, 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 in function from paragraph 1 to the 6th section of thickness
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 sets
It counts into different-thickness and realizes gradient characteristics.And graded functional relation is configured all in accordance with following formula：
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)
Incremental gradient.
It is fixedly connected by welding between the first structure part and thin-walled tube body；Second structural member and thin-wall tube
It is fixedly connected by welding between ontology；Between first structure part and the second structural member also by be welded and fixed connection；6 sections of longitudinal directions
It is fixedly connected by laser welding between each plate one being correspondingly arranged；Pass through between 6 sections of each plates two being longitudinally correspondingly arranged
Laser welding is fixedly connected；It is fixedly connected by laser welding between 6 sections of each plates three being longitudinally correspondingly arranged；Junction uses
High intensity steel laser splices, and to reduce the quality of whole thin-wall construction, realizes lightweight.
Increase distribution as shown in Fig. 2, the axial width of plate is non-homogeneous presentation, and longitudinal corresponding each plate is not
Symmetrical centre with section is located on same axis.Considering from secure context, intensity is set as successively incremental form, thickness T1,
It is linearly increasing relationship between T2, T3, T4, T5, T6, yield strength is also increased therewith so that material occurs progressively
Deformation is collapsed, energy is fully absorbed.By more born of the same parents' thin-walled rectangular tubes provided in this embodiment, being established in hypermesh softwares has
Meta-model is limited, the length L of the structure is 300mm, since the thickness for each plate being longitudinally correspondingly arranged is at graded, and it is every
The symmetrical centre of the different sections of one plate is located on same axis.In six thickness of axial setting of structure, thickness gradient is formed,
Each piece of plate (plate 3 101, two 201-202 of plate, one 301-308 of plate) has corresponding T1, T2, T3, T4, T5, T6
It successively increases, in order to preferably carry out analogue simulation in the present embodiment, by plate 3 101, two 201-202 of plate, plate one
301-308 corresponding T1, T2, T3, T4, T5, T6 are arranged to the same, correspond to 0.4,0.52,0.64,0.76,0.88,
1.0mm, since the graded of each plate is little, the equal carry out operation of setting B1, B2, specific size B1=B2=in emulation
80mm。
Further, traditional without gradient thin-walled in order to verify the more born of the same parents' rectangular tubes ratios of functionally gradient thin-walled provided in this embodiment
The crash-worthiness of 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, thin
The axial pressure feedback process of wall pipe structure is that collision head end first deforms, and analogue simulation proves：The thin-wall tube structure of graded
Since thickness distribution is incremented by from collision head end toward fixing end in functional relation, thin-wall tube of the tradition without thickness gradient variation is compared,
In collision process, it is easier to make thin-wall tube structure that gradual folded deformation occur, is conducive to fully absorb energy, and it is traditional
The single more born of the same parents' thin-wall constructions of 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 be obtained by data in upper table to draw a conclusion：The average peak force of gradient thin-shell absorption structure is more than traditional thin-walled and inhales
The average peak force of energy structure, illustrates that the whole process of the collision of the structure of the utility model is better than traditional Structural Crashworthiness,
And the utility model structural collision peak force is less than the collision peak force of traditional structure, relatively safety, entire collision process is inhaled
The interior energy of receipts is more than the interior energy that traditional structure is absorbed, and the utility model structural collision compresses force efficiency much larger than traditional structure
Force efficiency is compressed, in short, can show that the utility model Structural Crashworthiness 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 the functionally gradient of the utility model with traditional buffering energy-absorbing structure in phase homogenous quantities
Rigid wall compared with the energy-absorbing effect under identical impact velocity, the utility model have better energy-absorbing effect.This practicality
Novel thin-wall tube 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-list
The mode of one thickness 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 the transverse plate in " one " setting by hollow knot
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
Cell element tubular structure；
Or second structural member be in " | " setting 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 structure
9 cell element regions are divided into, 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
Cell element tubular structure；
Or second structural member by two pieces of level above transverse plates disposed in parallel with perpendicular to transverse plate setting and will be horizontal
To at least one piece of vertical plate composition of the equal decile of plate.
As other preferred embodiments, thickness increasing function relationship 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；T1For the thickness (minimum thickness) of the plate of collision 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 relationships.
Basic principles, main features, and advantages of the present invention has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principles of the present invention, the utility model can also on the premise of not departing from the spirit and scope of the utility model
There are various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The utility model is wanted
Protection domain is asked to be defined by appended claims and its equivalent.
Claims (8)
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 for the equal decile being arranged along its longitudinal length, n the first knots of section
Sequentially be fixedly connected between member unit, constitute first structure part unit plate one thickness from the collision head end of thin-wall tube toward
Fixing end is incremented by functional relation；
The thin-walled tube body is also made of the n section tube body units for the equal decile being arranged along its longitudinal length, n sections of tube body lists
Sequentially be fixedly connected between member, constitute tube body unit plate three thickness from the collision head end of thin-wall tube toward fixing end be in letter
Number relationship is incremented by；
If the length of thin-walled tube body and first structure part is L.
2. the more born of the same parents' thin-wall tubes of a kind of functionally gradient according to claim 1, which is characterized in that
The hollow structure is round or rectangular.
3. the more born of the same parents' thin-wall tubes of a kind of functionally gradient according to claim 1, which is characterized in that
The hollow structure be it is rectangular, the hollow structure include two separated by the second structural member that plate two is constituted 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 for the equal decile being arranged along its longitudinal length, n the first knots of section
Sequentially be fixedly connected between member unit, constitute first structure part unit plate one thickness from the collision head end of thin-wall tube toward
Fixing end is incremented by functional relation；
Second structural member is also along n section the second structural member units composition of the equal decile of its longitudinal length setting, n the second knots of section
Sequentially be fixedly connected between member unit, constitute the second structural member unit plate two thickness from the collision head end of thin-wall tube toward
Fixing end is incremented by functional relation；
The thin-walled tube body is also made of the n section tube body units for the equal decile being arranged along its longitudinal length, n sections of tube body lists
Sequentially be fixedly connected between member, constitute tube body unit plate three thickness from the collision head end of thin-wall tube toward fixing end be in letter
Number relationship is incremented by；
If the length of thin-walled tube body, first structure part, the second structural member is L.
4. the more born of the same parents' thin-wall tubes of a kind 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
It is upper to be arranged in the lateral plate two of horizontal parallel setting and perpendicular to lateral plate two and by least one piece of the equal decile of transverse plate
Vertical plate two forms.
5. the more born of the same parents' thin-wall tubes of a kind of functionally gradient according to any one of claims 1-4, 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. the more born of the same parents' thin-wall tubes of a kind 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. the more born of the same parents' thin-wall tubes of a kind 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.
8. the more born of the same parents' thin-wall tubes of a kind of functionally gradient according to claim 3 or 4, which is characterized in that
It is fixedly connected by laser welding between the n sections of each plates one being longitudinally correspondingly arranged；
It is fixedly connected by laser welding between the n sections of each plates two being longitudinally correspondingly arranged；
It is fixedly connected by laser welding between the n sections of each plates three being longitudinally correspondingly arranged.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186459A (en) * | 2020-01-23 | 2020-05-22 | 哈尔滨工业大学 | Combined energy absorption structure |
| CN113836771A (en) * | 2021-09-28 | 2021-12-24 | 华侨大学 | Multi-cell structure sole vibration energy transfer assessment method |
| CN115534852A (en) * | 2022-10-22 | 2022-12-30 | 中南大学 | Multi-pipe energy absorption device based on pipe fitting height-induced ring distribution differentiation design |
| WO2023115868A1 (en) * | 2021-12-23 | 2023-06-29 | 中车株洲电力机车有限公司 | Energy absorption structure of railway vehicle |
| CN115534852B (en) * | 2022-10-22 | 2024-05-03 | 中南大学 | Multitube energy-absorbing device based on pipe fitting height-induced ring distribution differentiation design |
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- 2018-02-08 CN CN201820220590.2U patent/CN208053276U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186459A (en) * | 2020-01-23 | 2020-05-22 | 哈尔滨工业大学 | Combined energy absorption structure |
| CN111186459B (en) * | 2020-01-23 | 2021-01-29 | 哈尔滨工业大学 | Combined energy absorption structure |
| CN113836771A (en) * | 2021-09-28 | 2021-12-24 | 华侨大学 | Multi-cell structure sole vibration energy transfer assessment method |
| WO2023115868A1 (en) * | 2021-12-23 | 2023-06-29 | 中车株洲电力机车有限公司 | Energy absorption structure of railway vehicle |
| CN115534852A (en) * | 2022-10-22 | 2022-12-30 | 中南大学 | Multi-pipe energy absorption device based on pipe fitting height-induced ring distribution differentiation design |
| CN115534852B (en) * | 2022-10-22 | 2024-05-03 | 中南大学 | Multitube energy-absorbing device based on pipe fitting height-induced ring distribution differentiation design |
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