CN110758297A - Method and structure for realizing folded paper nested energy absorption structure - Google Patents
Method and structure for realizing folded paper nested energy absorption structure Download PDFInfo
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- CN110758297A CN110758297A CN201911082908.0A CN201911082908A CN110758297A CN 110758297 A CN110758297 A CN 110758297A CN 201911082908 A CN201911082908 A CN 201911082908A CN 110758297 A CN110758297 A CN 110758297A
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- 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
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Abstract
The invention discloses a method and a structure for realizing a folded paper nested energy absorption structure, wherein the method comprises the following steps: s1, constructing a first equilateral hexagon in a plane of a three-dimensional coordinate system X-Y; s2, carrying out Z-direction translation on the equilateral hexagon to obtain a second equilateral hexagon, wherein the translation distance is h; s3, rotating the second equilateral hexagon horizontally by phi degrees along the counterclockwise direction by taking the center of the second equilateral hexagon as an axis; s4, linearly connecting the point A, B, C, D, E, F with the points a, b, c, d, e and f in a one-to-one correspondence manner, linearly connecting the point B, C, D, E, F, A with the points a, b, c, d, e and f in a one-to-one correspondence manner, and linearly connecting the point A, B, C, D, E, F with the points e, f, a, b, c and d in a one-to-one correspondence manner; every three connected line segments connected end to end form a triangular plane. The paper folding structure has good energy absorption characteristic.
Description
Technical Field
The invention relates to the technical field of structure manufacturing and computer image processing, in particular to a method and a structure for realizing a folded paper nested energy absorption structure.
Background
The existing types of energy-absorbing structures are various, and numerous researchers develop a plurality of energy-absorbing structures used at the end of a train. Such as an energy absorption device utilizing compression deformation of a metal thin-walled structure, an energy absorption device utilizing a cutter to shave a metal material, an energy absorption device utilizing hydraulic pressure, an energy absorption device utilizing brittle metal fracture, and the like. Many of them are also used in the automotive, marine, aircraft, and other industries.
Among a plurality of energy absorption structures, a metal thin-wall structure can dissipate a large amount of impact kinetic energy through plastic deformation, fracture and other damage modes when bearing impact load, and the energy absorption device is low in cost, high in specific energy absorption efficiency and very effective. The round tube is one of the most effective and widely applied energy absorption structures, namely the traditional metal thin-wall energy absorption structure.
However, the existing energy absorption structure including tubular and honeycomb aluminum has two disadvantages:
(1) the initial peak value of the impact force is too high, so that passengers are subjected to secondary collision, and the passengers are collided with the internal structures of a passenger room of the vehicle, such as a vehicle seat, a desktop, a side wall, a floor and a roof, or the passengers are thrown out of the vehicle, so that casualties are caused;
(2) if the energy absorption is insufficient and the huge kinetic energy in collision can not be absorbed fully as much as possible, the residual kinetic energy can cause the metal car body to generate large plastic deformation, so that the car body structure is damaged, passengers lose living space, and the casualties of the passengers are caused.
Disclosure of Invention
The invention aims to provide a method and a structure for realizing a folded paper nested energy absorption structure, the method is simple and quick, and the structure can not only compress energy absorption, but also twist energy absorption, so that the structure is suitable for complex conditions of collision.
In order to solve the technical problem, the invention provides a method for realizing a folded paper nested energy absorption structure, which comprises the following steps of:
s1, constructing a first equilateral hexagon in a plane of a three-dimensional coordinate system X-Y, wherein six points in the anticlockwise direction are A, B, C, D, E, F in sequence;
s2, carrying out Z-direction translation on the equilateral hexagon to obtain a second equilateral hexagon, and determining six points a, b, c, d, e and f corresponding to the point A, B, C, D, E, F, wherein the translation distance is h;
s3, rotating the second equilateral hexagon horizontally by phi degrees along the counterclockwise direction by taking the center of the second equilateral hexagon as an axis;
s4, linearly connecting the point A, B, C, D, E, F with the points a, b, c, d, e and f in a one-to-one correspondence manner, linearly connecting the point B, C, D, E, F, A with the points a, b, c, d, e and f in a one-to-one correspondence manner, and linearly connecting the point A, B, C, D, E, F with the points e, f, a, b, c and d in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane;
s5, forming a plane by the first equilateral hexagon, and forming a three-dimensional paper folding structure by the first equilateral hexagon and all triangular planes.
Preferably, φ is not greater than 30 °.
Preferably, the angle B in the triangular plane ABa is 53 °.
Preferably, the length of the first equilateral hexagon is L, the distance from each point to its center point is r, and the triangle plane ABa satisfies the following formula:
①
②
③
preferably, the second equilateral hexagon forms a plane.
In order to solve the technical problem, the invention further provides a folded paper nested energy absorption structure, which comprises the folded paper nested energy absorption structure realized according to the implementation method of the folded paper nested energy absorption structure.
The invention has the following beneficial effects:
(1) compared with the traditional structure, the folded paper nested energy absorption structure is more stable in compression energy absorption, cannot generate a destabilization phenomenon under the condition of sudden load, and is safer and more reliable.
(2) Compared with the traditional structure in the process of compression energy absorption, the folded paper nested energy absorption structure not only can absorb energy in a compression mode, but also can absorb energy in a torsion mode, and is more suitable for complex collision conditions; compared with the compression energy absorption process, the cross-sectional area mutation is smaller in the collision process, other space cannot be accumulated, and the occupied space is smaller.
(3) The folded paper nested energy absorption structure disclosed by the invention is subjected to torsional deformation during an axial load, and is subjected to compressive plastic deformation to absorb energy.
(4) The paper folding nested energy absorption structure adopts a nested structure, can absorb energy doubly during axial load, and ensures the improvement of energy absorption effect.
Drawings
FIG. 1 is a schematic structural view of a folded paper nested energy absorbing structure provided by an embodiment of the invention;
FIG. 2 is a schematic top view of a folded paper nested energy absorbing structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a method for implementing a folded paper nested energy absorbing structure in a preferred embodiment of the invention comprises the following steps:
s1, constructing a first equilateral hexagon in a plane of a three-dimensional coordinate system X-Y, wherein six points in the anticlockwise direction are A, B, C, D, E, F in sequence;
s2, carrying out Z-direction translation on the equilateral hexagon to obtain a second equilateral hexagon, and determining six points a, b, c, d, e and f corresponding to the point A, B, C, D, E, F, wherein the translation distance is h;
s3, rotating the second equilateral hexagon horizontally by phi degrees along the counterclockwise direction by taking the center of the second equilateral hexagon as an axis;
s4, linearly connecting the point A, B, C, D, E, F with the points a, b, c, d, e and f in a one-to-one correspondence manner, linearly connecting the point B, C, D, E, F, A with the points a, b, c, d, e and f in a one-to-one correspondence manner, and linearly connecting the point A, B, C, D, E, F with the points e, f, a, b, c and d in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane;
s5, forming a plane by the first equilateral hexagon, and forming a three-dimensional paper folding structure by the first equilateral hexagon and all triangular planes.
In a preferred embodiment of the invention, said phi is not more than 30 deg..
In a preferred embodiment of the invention, the angle B in said triangular plane ABa is 53 °.
In a preferred embodiment of the present invention, the length of the first equilateral hexagon is L, the distance from each point to its center point is r, and the triangle plane ABa satisfies the following formula:
①
②
③
in a preferred embodiment of the invention, said second equilateral hexagons form a plane.
The invention also provides a folded paper nested energy absorption structure, which comprises the folded paper nested energy absorption structure realized according to the implementation method of the folded paper nested energy absorption structure.
Specifically, the first equilateral hexagon surface of the folded paper nested energy absorption structure in the preferred embodiment of the invention bears the impact force, the folded paper nested energy absorption structure is compressed, the energy absorption effect is realized, the torsion is realized, the impact force is dispersed to all directions, and the torsion energy absorption is realized; the compression energy-absorbing process is compared, and the cross-sectional area sudden change is littleer in collision process, can not save other spaces, and the space that occupies is littleer to it is more stable at the compression energy-absorbing, under the load condition of sudden change, can not produce the unstability phenomenon, compares safe and reliable more than traditional structure. In addition, the folded paper nested energy absorbing structure is twisted and deformed during axial load, compression plastic deformation absorbs energy, and due to the fact that the twisting deformation leads to long collapse time, reaction force is small, the folded paper nested energy absorbing structure is deformed in a plane in the deformable plate, and the folded paper nested energy absorbing structure stretches in the plane to absorb energy.
Furthermore, the three parameters of the planar state of the preferred embodiment of the present invention, such as angle a, i.e. α, angle B, i.e. β, in the triangular plane ABa, length a, satisfy:
LAB＝a、
similarly, the structure of the preferred embodiment of the present invention has many collapsed states during collapse, different heights h, twist angles φ and radii r, which obviously cannot be determined by the three constants a, α, and βAB,εBCAnd epsilonACThe three variables (h, φ and r) are associated with three constants (a, α, and β), for example
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. A method for realizing a folded paper nested energy absorption structure is characterized by comprising the following steps: the method comprises the following steps:
s1, constructing a first equilateral hexagon in a plane of a three-dimensional coordinate system X-Y, wherein six points in the anticlockwise direction are A, B, C, D, E, F in sequence;
s2, carrying out Z-direction translation on the equilateral hexagon to obtain a second equilateral hexagon, and determining six points a, b, c, d, e and f corresponding to the point A, B, C, D, E, F, wherein the translation distance is h;
s3, rotating the second equilateral hexagon horizontally by phi degrees along the counterclockwise direction by taking the center of the second equilateral hexagon as an axis;
s4, linearly connecting the point A, B, C, D, E, F with the points a, b, c, d, e and f in a one-to-one correspondence manner, linearly connecting the point B, C, D, E, F, A with the points a, b, c, d, e and f in a one-to-one correspondence manner, and linearly connecting the point A, B, C, D, E, F with the points e, f, a, b, c and d in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane;
s5, forming a plane by the first equilateral hexagon, and forming a three-dimensional paper folding structure by the first equilateral hexagon and all triangular planes.
2. The method for realizing the nested energy absorbing structure of origami as recited in claim 1, wherein the angle B in the triangular plane ABa is 53 °.
3. The method for realizing the folded paper nested energy absorption structure as recited in claim 1, wherein the phi is not more than 30 degrees.
4. The method for realizing the folded paper nested energy absorption structure as claimed in claim 1, wherein the side length of the first equilateral hexagon is L, the distance from each point to the center point of the first equilateral hexagon is r, and the triangle plane ABa satisfies the following formula:
①
②
③
5. the method for realizing the folded paper nested energy absorption structure as recited in claim 1, wherein the second equilateral hexagon forms a plane.
6. The folded paper nested energy absorption structure is characterized by comprising the folded paper nested energy absorption structure realized according to the implementation method of the folded paper nested energy absorption structure disclosed by any one of claims 1-5.
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| CN201911082908.0A CN110758297A (en) | 2019-11-07 | 2019-11-07 | Method and structure for realizing folded paper nested energy absorption structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011106152A1 (en) * | 2011-06-30 | 2013-01-03 | Volkswagen Ag | Deformation element for attaching cross beam and bulkhead of motor vehicle chassis, has cross-sectional end faces whose polygonal sides are rotated to specific angle with respect to tube axis |
| JP6184130B2 (en) * | 2013-03-01 | 2017-08-23 | 新日鐵住金株式会社 | Cylindrical structure for automobile frame structure and automobile frame structure |
| US20190093728A1 (en) * | 2017-09-25 | 2019-03-28 | University Of Washington | Shock absorbing and impact mitigating structures based on axial-rotational coupling mechanism |
| CN209079845U (en) * | 2018-11-02 | 2019-07-09 | 江南大学 | A kind of three-dimensional origami structure vehicle energy absorption box |
| CN110316120A (en) * | 2019-06-14 | 2019-10-11 | 上海交通大学 | A kind of composite material Origami energy-absorbing folded tube |
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2019
- 2019-11-07 CN CN201911082908.0A patent/CN110758297A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011106152A1 (en) * | 2011-06-30 | 2013-01-03 | Volkswagen Ag | Deformation element for attaching cross beam and bulkhead of motor vehicle chassis, has cross-sectional end faces whose polygonal sides are rotated to specific angle with respect to tube axis |
| JP6184130B2 (en) * | 2013-03-01 | 2017-08-23 | 新日鐵住金株式会社 | Cylindrical structure for automobile frame structure and automobile frame structure |
| US20190093728A1 (en) * | 2017-09-25 | 2019-03-28 | University Of Washington | Shock absorbing and impact mitigating structures based on axial-rotational coupling mechanism |
| CN209079845U (en) * | 2018-11-02 | 2019-07-09 | 江南大学 | A kind of three-dimensional origami structure vehicle energy absorption box |
| CN110316120A (en) * | 2019-06-14 | 2019-10-11 | 上海交通大学 | A kind of composite material Origami energy-absorbing folded tube |
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Application publication date: 20200207 |