CN107542823A - A kind of pressure buffer structure - Google Patents
A kind of pressure buffer structure Download PDFInfo
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- CN107542823A CN107542823A CN201710591054.3A CN201710591054A CN107542823A CN 107542823 A CN107542823 A CN 107542823A CN 201710591054 A CN201710591054 A CN 201710591054A CN 107542823 A CN107542823 A CN 107542823A
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- end points
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- pressure buffer
- structure cell
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Abstract
The invention discloses a kind of pressure buffer structure, the structure is made up of the unit structure cell of periodic arrangement, the unit structure cell has corresponding axle, length and section, each unit structure cell includes a pair of end points (1) and (2) to define width, first pair of draw unit is connected with end points (1) and (2) and intersected in end points (3), and second pair of draw unit is connected with end points (1) and (2) and intersected in end points (4)；3rd pair of draw unit is connected with end points (1) and (5) and intersected in end points (6), and the 4th pair of draw unit is connected with end points (1) and (5) and intersected in end points (4)；5th pair of draw unit is connected with end points (5) and (7) and intersected in end points (8), and the 6th pair of draw unit is connected with end points (5) and (7) and intersected in end points (4)；Under external force, intensity can strengthen the present invention, while have the advantages that stronger impact absorbing power, impact resistance, resistance to fracture, crushing resistance.
Description
Technical field
The present invention relates to a kind of periodic structure with negative poisson's ratio material, more particularly to a kind of pressure buffer structure.
Background technology
When vehicle collides, vehicle part is absorbed huge entrained by it within the extremely short time by METHOD FOR LARGE DEFORMATION ELASTOPLASTIC
Kinetic energy, design in the market are desirable to gradually deform according to the direction being pre-designed, and according to destruction layer by layer, inhale layer by layer
The principle of receipts, the impulsive force of collision is set to be buffered and disperse, until parking, so as to reduce the impact to passenger's body as far as possible.
But existing structure, because deflection is big, energy dissipation is ineffective, after colliding, vehicle movement is excessive to cause vehicle
Component invades driver's cabin or extruding cab space, and occupant is damaged.
In another example slide plate is a kind of motion common in daily life, when slide plate is dived to ground from high-altitude with certain radian
When, can be by the enormous impact force from ground.But existing buffering spacer energy absorption capacity is poor, and sportsman can be caused strong
The tingling sensation of leg is experienced, serious situation can cause sportsman to become disabled person.
The auxetic performance principle of structure in the present invention derives from negative poisson's ratio material.Negative poisson's ratio material is different from biography
System, i.e., the common material with positive Poisson's ratio in nature, when an auxetic materials are pressurized, its meeting edge is hung down with Impact direction
Straight direction is shunk, and equally, can be expanded when its tension along the direction vertical with Impact direction.This characteristic makes auxetic materials exist
Density increases after compression, so as to better against external force.Except finding negative poisson's ratio material, negative poisson's ratio from nature
Material can also use common common material, such as plastics, rubber etc., by the microstructure unit for designing its periodic arrangement
Structure cell, obtain the buffer unit of composite with Negative poisson's ratio.
The content of the invention
It is an object of the invention to propose that one kind has stronger energy absorption power, impact resistance, the pressure of resistance to compression positive effect
Power buffer structure.
The technical solution adopted in the present invention：A kind of pressure buffer structure, the structure are brilliant by the unit of periodic arrangement
Born of the same parents are formed, and the unit structure cell has corresponding axle, length and section, each unit structure cell include a pair of end points (1) and
(2) width is defined, first pair of draw unit connect and intersect in end points (3), second pair of draw unit with end points (1) and (2)
Connect with end points (1) and (2) and intersect in end points (4)；3rd pair of draw unit is connected with end points (1) and (5) and in end points (6)
Intersecting, the 4th pair of draw unit is connected with end points (1) and (5) and intersected in end points (4)；5th pair of draw unit and end points (5)
(7) connect and intersecting in end points (8), the 6th pair of draw unit is connected with end points (5) and (7) and intersected in end points (4)；7th
Draw unit is connected with end points (2) and (7) and intersected in end points (9), the 8th pair of draw unit is connected with end points (2) and (7)
It is and intersecting in end points (4)；
The structure is in the first direction with the end points (1) of the unit structure cell unit structure cell adjacent with another
The mode that end points (2) is connected connects；
The structure is in a second direction with the end points (1) of the unit structure cell unit structure cell adjacent with another
The mode that end points (5) is connected connects；
The structure is on the 3rd direction with the end points (5) of the unit structure cell unit structure cell adjacent with another
The mode that end points (7) is connected connects；
The structure is on four direction with unit structure cell end points that a unit structure cell end points (2) is adjacent with another
(7) mode being connected connects.
Preferably, the end points (4) is provided with vertical axis (10).
Preferably, the inside configuration forms a series of holes.
Preferably, the unit structure cell is internally formed hole.
Preferably, sandwich material or packing material are provided with inside described hole.
Preferably, the draw unit has constant or variable cross section.
A kind of application of pressure buffer structure as the pressure buffer of bumper.
A kind of application of pressure buffer structure as the pressure buffer of slide plate.
Compared with prior art, the beneficial effects of the invention are as follows：(1) present invention is made up of common materials such as rubber, aluminiums,
With mechanical properties such as stronger crushing resistance, impact absorbing power, resiliences；(2) present invention is designed as the unit of periodic arrangement
Structure cell, and vertical axis is provided with, make formed structure that integrally there is auxetic effect, in tension, its vertical direction has stretching property
Or there is the mechanical property of extruding and compression property when being squeezed, under external force, intensity can be increasing, and be increasingly not easy by
Destroy, while there is the mechanical properties such as stronger impact absorbing power, impact resistance, resistance to fracture, crushing resistance, resilience；(3) originally
Invent the inside configuration and form a series of holes, be provided with sandwich material or packing material inside described hole, realize pressure
The effect of buffering.
Brief description of the drawings
Fig. 1 is the unit cell configuration schematic diagram of the present invention.
Fig. 2 is the structural representation of the present invention.
Fig. 3 is the front view of the unit structure cell of the present invention.
Fig. 4 is the front view of the unit structure cell periodic arrangement of the present invention.
Fig. 5 is the auxetic effect schematic diagram of the unit structure cell of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment
The present invention is this characteristic of the design from negative poisson's ratio material of structure.Poisson's ratio is with presenter Simeon
Poisson names, refer to the negative of the ratio between the strain of material in two perpendicular direction.It is commonly defined as the transverse direction of material
(perpendicular to reinforcing direction) shrinkage factor and axially the ratio between extensibility (along reinforcing direction).Some materials have negative Poisson's ratio, such as
Fruit stretches these materials in a certain direction, then can be expanded in perpendicular direction.Equally, if pressed in one direction
Contracting, then it can be shunk in perpendicular direction.The present invention devises the unit structure cell of periodic arrangement, makes formed structure whole
Body has auxetic effect, referred to as structure.
Referring to Fig. 1-5 as can be seen that a kind of pressure buffer structure, the structure by periodic arrangement unit structure cell structure
Into the unit structure cell has corresponding axle, length and section, and each unit structure cell includes a pair of end points (1) and (2) are come
Width is defined, first pair of draw unit is connected and intersected in end points (3), second pair of draw unit and end points with end points (1) and (2)
(1) connect and intersect in end points (4) with (2)；3rd pair of draw unit is connected with end points (1) and (5) and intersected in end points (6),
4th pair of draw unit is connected with end points (1) and (5) and intersected in end points (4)；5th pair of draw unit and end points (5) and (7)
Connect and intersecting in end points (8), the 6th pair of draw unit is connected with end points (5) and (7) and intersected in end points (4)；7th pair of drawing
Stretch unit and end points (2) and (7) connect and intersected in end points (9), the 8th pair of draw unit be connected with end points (2) and (7) and in
End points (4) is intersecting；
In the concrete technical scheme of the present invention, the structure is in the first direction with the end points of a unit structure cell
(1) mode that the end points (2) of the unit structure cell adjacent with another is connected connects；The structure is in a second direction with one
The mode that the end points (5) of the end points (1) of the individual unit structure cell unit structure cell adjacent with another is connected connects；The structure exists
The side being connected on 3rd direction with the end points (7) of the end points (5) of the unit structure cell unit structure cell adjacent with another
Formula connects；The structure is on four direction with unit structure cell end points that a unit structure cell end points (2) is adjacent with another
(7) mode being connected connects.
It should be noted that the end points (4) is provided with vertical axis (10), the setting of vertical axis (10) causes draw unit
It is more stable, cause structure to be shunk toward the direction of pressure effect when stress extrudes.The inside configuration forms a series of holes,
The unit structure cell is internally formed hole, and sandwich material or packing material, sandwich material or filling material are provided with inside described hole
The setting of material further enhancing anti-pooling feature.The draw unit has constant or variable cross section so that structure has
There is resilience etc..There is the structure its vertical direction during any direction tension to have expansion (stretching property) in three-dimensional cartesian coordinate system
And (or) the mechanical property (see Fig. 5) of (extruding and compression property) is shunk when being squeezed, it can be made up, have of common materials such as rubber, aluminiums
The mechanical properties such as stronger crushing resistance, impact absorbing power, resilience.
By the structure design of the pressure buffer device in bumper, when car collision, bumper by
The impact of enormous power, with increasing for the pressure being subject to, the buffer structure can shrink toward the direction of pressure effect, while structure
The mechanical properties such as crushing resistance, impact absorbing power, resilience are improved, that is to say, that the buffer structure can be by huge impulsive force
Absorb, avoid causing vehicle component intrusion driver's cabin or excessive extruding cab space because the amount of being subjected to displacement is excessive to occupant
Damage.
For another example, by the structure design of the pressure buffer device in the buffering spacer of slide plate.During skateboarding,
When road surface occurs rough and uneven in surface, the structure can make corresponding auxetic with the fluctuating of stress or shrink reflection, so as to rise
To cushioning effect；In large amount of exercise, by the greater impact power from ground and various barriers, the structure, which can absorb, to be come
Impulsive force from the external world, so as to play protection parts effect.
For those skilled in the art, technical scheme that can be as described above and design, make other each
Kind is corresponding to be changed and deforms, and all these change and deformed the protection model that should all belong to the claims in the present invention
Within enclosing.
Claims (9)
- A kind of 1. pressure buffer structure, it is characterised in that：The structure is made up of the unit structure cell of periodic arrangement, the unit Structure cell has corresponding axle, length and section, and each unit structure cell includes a pair of end points (1) and (2) to define width, the A pair of draw units are connected with end points (1) and (2) and intersected in end points (3), and second pair of draw unit connects with end points (1) and (2) Connect and intersecting in end points (4)；3rd pair of draw unit is connected with end points (1) and (5) and intersected in end points (6), the 4th pair of stretching Unit is connected with end points (1) and (5) and intersected in end points (4)；5th pair of draw unit is connected and in end with end points (5) and (7) Point (8) is intersecting, and the 6th pair of draw unit is connected with end points (5) and (7) and intersected in end points (4)；7th pair of draw unit and end Point (2) and (7) connection are simultaneously intersecting in end points (9), and the 8th pair of draw unit is connected with end points (2) and (7) and in end points (4) phase Hand over.
- A kind of 2. pressure buffer structure according to claim 1, it is characterised in that：The structure is in the first direction with the end points of the end points (1) of the unit structure cell unit structure cell adjacent with another (2) mode being connected connects；The structure is in a second direction with the end points of the end points (1) of the unit structure cell unit structure cell adjacent with another (5) mode being connected connects；The structure is on the 3rd direction with the end points of the end points (5) of the unit structure cell unit structure cell adjacent with another (7) mode being connected connects.The structure is on four direction with unit structure cell end points (7) that a unit structure cell end points (2) is adjacent with another The mode being connected connects.
- A kind of 3. pressure buffer structure according to claim 1, it is characterised in that：The end points (4) is provided with vertical axis (10)。
- A kind of 4. pressure buffer structure according to claim 1, it is characterised in that：The inside configuration forms a series of holes Hole.
- A kind of 5. pressure buffer structure according to claim 1, it is characterised in that：The unit structure cell is internally formed hole Hole.
- A kind of 6. pressure buffer structure according to claim 1, it is characterised in that：Sandwich material is provided with inside described hole Or packing material.
- A kind of 7. pressure buffer structure according to claim 1, it is characterised in that：The draw unit has constant or can The cross section of change.
- A kind of 8. application of any described pressure buffer structures of claim 1-7 as the pressure buffer of bumper.
- A kind of 9. application of any described pressure buffer structures of claim 1-7 as the pressure buffer of slide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710591054.3A CN107542823A (en) | 2017-07-19 | 2017-07-19 | A kind of pressure buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710591054.3A CN107542823A (en) | 2017-07-19 | 2017-07-19 | A kind of pressure buffer structure |
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| Publication Number | Publication Date |
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| CN107542823A true CN107542823A (en) | 2018-01-05 |
Family
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| CN201710591054.3A Pending CN107542823A (en) | 2017-07-19 | 2017-07-19 | A kind of pressure buffer structure |
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Cited By (7)
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| CN108386467A (en) * | 2018-05-10 | 2018-08-10 | 中国人民解放军海军工程大学 | Multi-panel indent pyramid negative poisson's ratio space lattice structure and its pressure-bearing grillage |
| CN108560436A (en) * | 2018-04-28 | 2018-09-21 | 吉林大学 | A kind of micro-structure energy regenerating deceleration strip based on piezoelectric effect |
| CN110619189A (en) * | 2019-09-27 | 2019-12-27 | 五邑大学 | Three-dimensional zero Poisson ratio microscopic structure based on star structure and macroscopic structure thereof |
| CN110744873A (en) * | 2019-11-22 | 2020-02-04 | 南京工业大学 | 3D printing structure composite material sandwich board with negative Poisson ratio effect and processing method |
| CN111457042A (en) * | 2020-04-10 | 2020-07-28 | 中车青岛四方机车车辆股份有限公司 | Vibration isolation equipment and railway vehicle applying same |
| CN112658256A (en) * | 2019-09-30 | 2021-04-16 | 河北工业大学 | Three-dimensional enhanced star structure |
| CN113757281A (en) * | 2021-09-07 | 2021-12-07 | 中国科学院空间应用工程与技术中心 | Energy-absorbing unit body based on multistable state and energy-absorbing material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108560436A (en) * | 2018-04-28 | 2018-09-21 | 吉林大学 | A kind of micro-structure energy regenerating deceleration strip based on piezoelectric effect |
| CN108560436B (en) * | 2018-04-28 | 2020-07-17 | 吉林大学 | Microstructure energy recovery deceleration strip based on piezoelectric effect |
| CN108386467A (en) * | 2018-05-10 | 2018-08-10 | 中国人民解放军海军工程大学 | Multi-panel indent pyramid negative poisson's ratio space lattice structure and its pressure-bearing grillage |
| CN110619189A (en) * | 2019-09-27 | 2019-12-27 | 五邑大学 | Three-dimensional zero Poisson ratio microscopic structure based on star structure and macroscopic structure thereof |
| CN112658256A (en) * | 2019-09-30 | 2021-04-16 | 河北工业大学 | Three-dimensional enhanced star structure |
| CN110744873A (en) * | 2019-11-22 | 2020-02-04 | 南京工业大学 | 3D printing structure composite material sandwich board with negative Poisson ratio effect and processing method |
| CN111457042A (en) * | 2020-04-10 | 2020-07-28 | 中车青岛四方机车车辆股份有限公司 | Vibration isolation equipment and railway vehicle applying same |
| CN113757281A (en) * | 2021-09-07 | 2021-12-07 | 中国科学院空间应用工程与技术中心 | Energy-absorbing unit body based on multistable state and energy-absorbing material |
| CN113757281B (en) * | 2021-09-07 | 2023-01-10 | 中国科学院空间应用工程与技术中心 | Energy-absorbing unit body based on multistable state and energy-absorbing material |
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