CN110758298B - Method and structure for realizing triple energy absorption structure of folded paper - Google Patents
Method and structure for realizing triple energy absorption structure of folded paper Download PDFInfo
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- CN110758298B CN110758298B CN201911083954.2A CN201911083954A CN110758298B CN 110758298 B CN110758298 B CN 110758298B CN 201911083954 A CN201911083954 A CN 201911083954A CN 110758298 B CN110758298 B CN 110758298B
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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
Abstract
The invention relates to the technical field of structure manufacturing and computer image processing, and discloses a method and a structure for realizing a folded paper triple 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, 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; s3, taking the center of the second equilateral hexagon as the axis to rotate the second equilateral hexagon horizontally by phi degrees along the clockwise direction; s4, connecting point A, B, C, D, E, F and points a, b, c, d, e, f in a one-to-one straight line, and connecting point B, C, D, E, F, A and points a, b, c, d, e, f in a one-to-one straight line. 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 triple 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 triple energy absorption structure of folded paper, the method is simple and quick to realize, and the structure can not only compress energy absorption, but also twist energy absorption, so that the triple energy absorption 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 triple 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, taking the center of the second equilateral hexagon as the axis to rotate the second equilateral hexagon horizontally by phi degrees along the clockwise direction;
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, and 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; every three end-to-end connecting line segments form a triangular plane, and parameters of all the triangular planes are the same, so that a first energy absorption structure is formed;
s5, carrying out Z-direction translation on the first energy absorption structure to obtain a second energy absorption structure, wherein the translation distance is h, and the second energy absorption structure horizontally rotates for phi degrees along the clockwise direction to realize that a second equilateral hexagon of the first energy absorption structure is overlapped with a first equilateral hexagon of the second energy absorption structure;
s6, carrying out Z-direction translation on the second equilateral hexagon of the second energy absorption structure to obtain a third equilateral hexagon, and determining six points a1, b1, c1, d1, e1 and f1 corresponding to the points a, b, c, d, e and f of the second energy absorption structure, wherein the translation distance is h 1;
s6, rotating the third equilateral hexagon horizontally by phi 1 degrees clockwise by taking the center of the third equilateral hexagon as an axis;
s7, linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points a1, b1, c1, d1, e1 and f1 in a one-to-one correspondence manner, and linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points b1, c1, d1, e1, f1 and a1 in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane, and all the triangular planes form a third energy absorption structure;
and S8, the first energy absorbing structure, the second energy absorbing structure and the third energy absorbing structure form a three-dimensional paper folding structure.
Preferably, the angle B in the triangular plane ABa is 38 ° and the angle a is 30 °.
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, steps S3 and S4 are replaced by linearly connecting points A, B, C, D, E, F and f, a, b, c, d, e in a one-to-one correspondence, and connecting points B, C, D, E, F, A and f, a, b, c, d, e in a one-to-one correspondence; every three connected line segments connected end to end form a triangular plane, and the parameters of all the triangular planes are the same.
Preferably, the second equilateral hexagon forms a plane.
Preferably, the angle b in the triangular plane aba1 is 53 °.
Preferably, the length of the side of the second equilateral hexagon is L, the distance from each point to the center point of the second equilateral hexagon is r, and the triangle plane aba1 satisfies the following formula:
①
②
③
preferably, the points of the second energy-absorbing structure A, B, C, D, E, F and the points a, b, c, d, e and f are respectively on the straight lines corresponding to the points a, b, c, d, e and f and on the adjacent triangular planes, and the three points are connected end to form a rib plate triangular plane, wherein the rib plate triangular plane is perpendicular to the two adjacent triangular planes.
Preferably, the number of the rib plate triangles is multiple.
In order to solve the technical problem, the invention also provides a folded paper triple energy absorption structure, which comprises the folded paper triple energy absorption structure realized according to the implementation method of the folded paper triple energy absorption structure.
The invention has the following beneficial effects:
(1) compared with the traditional structure, the folded paper triple energy absorption structure is more stable in compression energy absorption, cannot generate instability under sudden load, and is safer and more reliable.
(2) Compared with the traditional structure in the compression energy absorption process, the folded paper triple 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 triple energy absorption structure has a longer energy absorption range by combining two structures in the compression process, and 3 parts of the first energy absorption structure, the second energy absorption structure and the third energy absorption structure are simultaneously twisted to absorb energy, so that the folded paper triple energy absorption structure is more stable and balanced, and is safer and more reliable.
Drawings
FIG. 1 is a schematic structural diagram of a folded paper triple energy absorbing structure provided by an embodiment of the invention;
FIG. 2 is a schematic view of a first energy absorbing structure of a folded paper triple energy absorbing structure provided by an embodiment of the invention;
FIG. 3 is a schematic diagram of a second energy absorbing structure of a folded paper triple energy absorbing structure provided by an embodiment of the invention;
FIG. 4 is a schematic diagram of a third energy absorbing structure of a origami triple energy absorbing structure provided by an embodiment of the invention;
FIG. 5 is a schematic view of a horizontally arranged structure of a folded paper triple energy absorbing structure provided by an embodiment of the invention;
FIG. 6 is a schematic view of another horizontal arrangement structure of a folded paper triple energy absorption structure provided by the embodiment of the 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, 2, 3 and 4, a method for implementing a folded paper triple energy absorption 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, taking the center of the second equilateral hexagon as the axis to rotate the second equilateral hexagon horizontally by phi degrees along the clockwise direction;
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, and 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; every three end-to-end connecting line segments form a triangular plane, and parameters of all the triangular planes are the same, so that a first energy absorption structure is formed;
s5, carrying out Z-direction translation on the first energy absorption structure to obtain a second energy absorption structure, wherein the translation distance is h, and the second energy absorption structure horizontally rotates for phi degrees along the clockwise direction to realize that a second equilateral hexagon of the first energy absorption structure is overlapped with a first equilateral hexagon of the second energy absorption structure;
s6, carrying out Z-direction translation on the second equilateral hexagon of the second energy absorption structure to obtain a third equilateral hexagon, and determining six points a1, b1, c1, d1, e1 and f1 corresponding to the points a, b, c, d, e and f of the second energy absorption structure, wherein the translation distance is h 1;
s6, rotating the third equilateral hexagon horizontally by phi 1 degrees clockwise by taking the center of the third equilateral hexagon as an axis;
s7, linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points a1, b1, c1, d1, e1 and f1 in a one-to-one correspondence manner, and linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points b1, c1, d1, e1, f1 and a1 in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane, and all the triangular planes form a third energy absorption structure;
and S8, the first energy absorbing structure, the second energy absorbing structure and the third energy absorbing structure form a three-dimensional paper folding structure.
In a preferred embodiment of the invention, the angle B in said triangular plane ABa is 38 ° and the angle a is 30 °.
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 the preferred embodiment of the present invention, steps S3 and S4 are replaced by linearly connecting points A, B, C, D, E, F and points f, a, b, c, d, e in a one-to-one correspondence, and linearly connecting points B, C, D, E, F, A and points f, a, b, c, d, e in a one-to-one correspondence; every three connected line segments connected end to end form a triangular plane, and the parameters of all the triangular planes are the same.
In a preferred embodiment of the invention, said second equilateral hexagons form a plane.
In a preferred embodiment of the invention, the angle b in the triangular plane aba1 is 53 °.
In a preferred embodiment of the present invention, the length of the side of the second equilateral hexagon is L, the distance from each point to its center point is r, and the triangle plane aba1 satisfies the following formula:
①
②
③
in a preferred embodiment of the invention, the points of the second energy-absorbing structure A, B, C, D, E, F are respectively taken on the straight lines corresponding to the points a, b, c, d, e and f and on the adjacent triangular planes, and the three points are connected end to form a ribbed triangular plane which is perpendicular to the two adjacent triangular planes.
In a preferred embodiment of the present invention, the rib is provided in a plurality of triangular shapes.
In a preferred embodiment of the invention, the second equilateral hexagons of the second energy-absorbing structure form a plane.
The preferred embodiment of the invention also provides a folded paper triple energy absorption structure, which comprises the folded paper triple energy absorption structure realized according to the implementation method of the folded paper triple energy absorption structure.
Referring to fig. 5 and 6, in a preferred embodiment of the invention, the first energy absorbing structure, the second energy absorbing structure and the third energy absorbing structure are combined in a planar arrangement to form a honeycomb structure.
Specifically, the folded paper triple energy absorption structure in the preferred embodiment of the invention bears the impact force on the first equilateral hexagon surface, compresses the folded paper triple energy absorption structure, realizes the energy absorption effect, twists, disperses the impact force to all directions, and realizes the twisting energy absorption; 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.
Furthermore, 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, length a in the triangular plane ABa, satisfy:
LAB＝a、
also, the structure of the preferred embodiment of the present invention has many folded states during collapse, different heights h, twist angles φ and radii r, which obviously cannot be determined by the three constants a, α, and β. Thus introducing the variables ε AB, ε BC, and ε AC, and relating these three variables (h, φ and r) to 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 (9)
1. A method for realizing a folded paper triple 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, taking the center of the second equilateral hexagon as the axis to rotate the second equilateral hexagon horizontally by phi degrees along the clockwise direction;
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, and 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; every three end-to-end connecting line segments form a triangular plane, and parameters of all the triangular planes are the same, so that a first energy absorption structure is formed;
s5, carrying out Z-direction translation on the first energy absorption structure to obtain a second energy absorption structure, wherein the translation distance is h, and the second energy absorption structure horizontally rotates for phi degrees along the clockwise direction to realize that a second equilateral hexagon of the first energy absorption structure is overlapped with a first equilateral hexagon of the second energy absorption structure;
s6, carrying out Z-direction translation on the second equilateral hexagon of the second energy absorption structure to obtain a third equilateral hexagon, and determining six points a1, b1, c1, d1, e1 and f1 corresponding to the points a, b, c, d, e and f of the second energy absorption structure, wherein the translation distance is h 1;
s6, rotating the third equilateral hexagon horizontally by phi 1 degrees clockwise by taking the center of the third equilateral hexagon as an axis;
s7, linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points a1, b1, c1, d1, e1 and f1 in a one-to-one correspondence manner, and linearly connecting the points a, b, c, d, e and f of the second energy-absorbing structure with the points b1, c1, d1, e1, f1 and a1 in a one-to-one correspondence manner; every three connecting line segments connected end to end form a triangular plane, and all the triangular planes form a third energy absorption structure;
s8, the first energy absorption structure, the second energy absorption structure and the third energy absorption structure form a three-dimensional paper folding structure;
the points of the second energy-absorbing structure A, B, C, D, E, F and the points a, b, c, d, e and f on the straight line corresponding to the points a, b, c, d, e and f and the adjacent triangular planes are respectively taken, the three points are connected end to form a rib plate triangular plane, and the rib plate triangular plane is perpendicular to the two adjacent triangular planes.
2. The method for realizing the triple energy absorbing structure of the folded paper as claimed in claim 1, wherein the angle B in the triangular plane ABa is 38 degrees, and the angle a is 30 degrees.
3. The method for realizing the three energy absorption structures of the origami 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
4. the method for realizing the triple energy absorption structure of the folded paper as claimed in claim 1, wherein the steps S3 and S4 are replaced by linearly connecting points A, B, C, D, E, F and f, a, b, c, d, e in a one-to-one correspondence manner, and linearly connecting points B, C, D, E, F, A and f, a, b, c, d, e in a one-to-one correspondence manner; every three connected line segments connected end to end form a triangular plane, and the parameters of all the triangular planes are the same.
5. The method for realizing the triple energy absorbing structure of the folded paper as claimed in claim 1, wherein the angle b in the triangular plane aba1 is 53 degrees.
6. The method for realizing triple energy absorption structure of origami as claimed in claim 1, wherein the side length of the second equilateral hexagon is L, the distance from each point to the center point of the second equilateral hexagon is r, and the plane aba of the triangle is aba1The following formula is satisfied:
①
②
③
7. the method for realizing the triple energy absorption structure of the origami as claimed in claim 1, wherein the third equilateral hexagon forms a plane.
8. The method for realizing the three-fold energy absorption structure of the folded paper as claimed in claim 1, wherein the plurality of the rib plate triangles are arranged.
9. A folded paper triple energy absorption structure, which is characterized by comprising the folded paper triple energy absorption structure realized according to the realization method of the folded paper triple energy absorption structure as claimed in any one of claims 1 to 8.
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| 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 |
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