CN114135626A - Three-dimensional curved-wall same-phase regular polygon chiral honeycomb - Google Patents
Three-dimensional curved-wall same-phase regular polygon chiral honeycomb Download PDFInfo
- Publication number
- CN114135626A CN114135626A CN202111449191.6A CN202111449191A CN114135626A CN 114135626 A CN114135626 A CN 114135626A CN 202111449191 A CN202111449191 A CN 202111449191A CN 114135626 A CN114135626 A CN 114135626A
- Authority
- CN
- China
- Prior art keywords
- honeycomb
- wall
- chiral
- energy dissipation
- curved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 59
- 238000006073 displacement reaction Methods 0.000 abstract description 24
- 230000008901 benefit Effects 0.000 abstract description 9
- 241000264877 Hippospongia communis Species 0.000 description 125
- 238000010521 absorption reaction Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000001413 cellular effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/10—Numerical modelling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/10—Additive manufacturing, e.g. 3D printing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
Abstract
The invention discloses a three-dimensional curved-wall in-phase regular polygon chiral honeycomb, and belongs to the technical field of safety protection. The regular polygon chiral honeycomb is composed of energy dissipation curved walls and straight wall honeycomb framework profiles, the energy dissipation curved walls are not mutually collided when the regular polygon chiral honeycomb is impacted, the straight wall honeycomb framework profiles are composed of honeycomb cells, and the energy dissipation curved walls are spliced in the honeycomb cells to form a three-dimensional curved wall in-phase regular polygon chiral honeycomb. Compared with the prior art, the invention has the advantages that: the energy dissipation curved wall with the wide upper part and the narrow lower part is arranged, so that the axial rigidity of the energy dissipation curved wall is greatly improved, and the average value of a force-displacement curve can be greatly improved; and the energy dissipation curved wall eliminates the influence of randomness through geometric asymmetry, the deformation mode is easy to control, stable and reliable, and uncontrollable phenomena such as random buckling, overturning and the like caused by unstable deformation mode of the straight-wall honeycomb energy dissipation device are avoided.
Description
Technical Field
The invention relates to the technical field of safety protection, in particular to a three-dimensional curved-wall same-phase regular polygon chiral honeycomb.
Background
In recent years, with the improvement of the technological level and the development of tool equipment, the burst frequency and the destructive power of emergency impact accidents such as collision, explosion and the like are continuously improved, and serious damage is caused to the safety of personnel and property. Therefore, how to design an impact protection device with high energy absorption performance and stable deformation mode has become a research hotspot in the field of safety protection engineering.
At present, each honeycomb cell element of the existing honeycomb protection energy dissipation device adopts a straight-wall structure, the axial rigidity is low, the deformation mode is unstable, and uncontrollable phenomena such as random buckling, overturning and the like are easy to occur. Therefore, the new honeycomb energy dissipation protector should meet at least the following requirements. First, the novel energy-absorbing protection device needs to have the functions of stable force-displacement curve, strong energy-absorbing capacity and high energy-absorbing efficiency. In order to ensure the safety of personnel and equipment, the energy absorption protection device not only needs to efficiently and quickly dissipate impact energy, but also needs to control the maximum impact force within a certain range, so that a force-displacement curve is required to have higher average value and stability. Secondly, novel energy-absorbing protector needs to possess stable deformation energy-absorbing mode. Some energy-absorbing structures show stronger energy-absorbing capacity when bearing axially, but the deformation mode is unstable, uncontrollable phenomena such as random buckling and overturning are easy to occur, and if the deformation process can be guided through the configuration design, a more stable and reliable deformation energy-absorbing mode can be generated.
Therefore, the design of the impact protection device with high energy absorption performance and stable deformation mode is meaningful work. The method has important values for improving the utilization rate of materials and space, rapidly and efficiently dealing with accidents and reducing life and property loss.
Disclosure of Invention
In order to solve the problems that the existing energy-absorbing protection device in the background technology does not completely have the functions of stable force-displacement curve, strong energy-absorbing capacity and high energy-absorbing efficiency, and can not achieve a stable deformation energy-absorbing mode, the invention provides a three-dimensional curved-wall same-phase regular polygon chiral honeycomb. The same-phase regular polygon chiral honeycomb keeps the advantage of stable force-displacement curve of the traditional straight-wall honeycomb structure, and greatly improves the total energy absorption amount and specific energy absorption ratio on the premise of not wasting extra space. Meanwhile, the energy dissipation curved wall with the wide upper part and the narrow lower part is arranged, so that the axial rigidity of the energy dissipation curved wall is greatly improved, and the average value of a force-displacement curve can be greatly improved; and the energy dissipation curved wall eliminates the influence of randomness through geometric asymmetry, the deformation mode is easy to control, stable and reliable, and uncontrollable phenomena such as random buckling, overturning and the like caused by unstable deformation mode of the straight-wall honeycomb energy dissipation device are avoided.
In order to achieve the purpose, the technical scheme of the three-dimensional curved-wall in-phase regular polygon chiral honeycomb comprises the following steps:
the regular polygon chiral honeycomb is composed of energy dissipation curved walls and straight-wall honeycomb framework profiles, the energy dissipation curved walls are not mutually collided when the regular polygon chiral honeycomb is impacted, the straight-wall honeycomb framework profiles are composed of honeycomb cells, and the energy dissipation curved walls are spliced in the honeycomb cells to form the three-dimensional curved-wall in-phase regular polygon chiral honeycomb.
The three-dimensional curved-wall same-phase regular polygon chiral honeycomb keeps the advantage of stable force-displacement curve of the traditional straight-wall honeycomb structure, and greatly improves the total energy absorption amount and specific energy absorption ratio on the premise of not wasting extra space. The different energy dissipation curved walls are connected with each other in a stable structure mode of the regular polygon straight wall honeycomb framework, so that the integral stability is realized, and the characteristic of gentle force-displacement curve is maintained.
As a preferred embodiment, the honeycomb cells are of a chiral nature.
In a preferred embodiment, the energy dissipation curved wall is a curved structure with a wide top and a narrow bottom.
The axial rigidity of the energy dissipation curved wall with the wide upper part and the narrow lower part is greatly improved, and the average value of a force-displacement curve can be greatly improved; the regular polygon chiral honeycomb shows a more stable and controllable deformation energy absorption mode, namely, the regular polygon chiral honeycomb adopts an energy dissipation curved wall with a wide top and a narrow bottom, the influence of randomness is eliminated through geometric asymmetry, the deformation mode is easy to control, stable and reliable, and uncontrollable phenomena such as random buckling and overturning caused by unstable deformation mode of the straight-wall honeycomb energy dissipation device are avoided.
As a preferred embodiment, the horizontal cross-sectional shape of the honeycomb cells includes, but is not limited to, regular hexagons and regular quadrilaterals. The horizontal cross section of the honeycomb cell is preferably regular hexagon and regular quadrangle or other geometric shapes, and the horizontal cross section is spliced with the energy dissipation curved wall with the wide upper part and the narrow lower part, so that the finally formed three-dimensional curved wall same-phase regular polygon chiral honeycomb can achieve the beneficial effects.
In a preferred embodiment, the cross-sectional shape of the energy dissipating curved wall at any horizontal plane z is a single-period sine wave type curve with frequency w.
In a preferred embodiment, the amplitude a (z) of the single-period sinusoidal wave curve with frequency w increases with increasing horizontal position z.
In a preferred embodiment, the curves of the single-period sinusoidal wave curve with the frequency w in the positive direction of the cellular cell in which the curve is located have the same initial phase; the single-period sine wave curve with the frequency w and the adjacent curve intersect at the vertex of the honeycomb cell.
In a preferred embodiment, the side length a of the cellular cell satisfies a 2 pi/w.
In a preferred embodiment, the amplitude a (z) of the monocycle sinusoidal wave curve in each horizontal section of the energy dissipating curved wall satisfies
In a preferred embodiment, the wall thickness of each position of the regular polygonal chiral honeycomb is equal.
Compared with the prior art, the invention has the advantages and beneficial effects that: the three-dimensional curved-wall in-phase regular polygon chiral honeycomb keeps the advantage of stable force-displacement curve of the traditional straight-wall honeycomb structure, and greatly improves the total energy absorption amount and specific energy absorption ratio on the premise of not wasting extra space. The different energy dissipation curved walls are connected with each other in a stable structure mode of the regular polygon straight wall honeycomb framework, so that the integral stability is realized, and the characteristic of gentle force-displacement curve is maintained. In addition, compared with a straight-wall honeycomb energy dissipation device, the performance of the energy dissipation curved wall and the chiral honeycomb is obviously improved. More specifically, the axial rigidity of the energy dissipation curved wall with the wide upper part and the narrow lower part is greatly improved, and the average value of a force-displacement curve can be greatly improved; the chiral honeycomb shows a more stable and controllable deformation energy absorption mode, namely, the chiral honeycomb regular polygon adopts the energy dissipation curved wall with the wide top and the narrow bottom, the influence of randomness is eliminated through the geometric asymmetry, the deformation mode is easy to control, stable and reliable, and the uncontrollable phenomena of random buckling, overturning and the like caused by the unstable deformation mode of the straight-wall honeycomb energy dissipater are avoided.
Drawings
Fig. 1 is an oblique view of a three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb of examples 1 to 2;
fig. 2 is a top view of the three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb of examples 1 to 2;
fig. 3 is a schematic diagram of a positive direction of the three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb cell of fig. 2;
FIG. 4 is a schematic horizontal cross-sectional view of the three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb of examples 1 to 2 in the bottom layer;
FIG. 5 is a schematic horizontal cross-sectional view of the three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb of examples 1 to 2 at the top layer;
FIG. 6 is a schematic diagram of deformation of the three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb of FIG. 1 under a compressive load;
FIG. 7 is a schematic diagram of the deformation of a conventional straight-walled hexagonal honeycomb under a compressive load;
FIG. 8 is a force-displacement graph of the three-dimensional curved-wall in-phase regular hexagonal honeycomb of FIG. 1 and a conventional straight-wall hexagonal honeycomb under a compressive load;
FIG. 9 is an oblique view of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of example 3-4;
FIG. 10 is a top view of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of examples 3-4;
FIG. 11 is a schematic horizontal cross-sectional view of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of examples 3-4 in the bottom layer;
FIG. 12 is a schematic horizontal cross-sectional view of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of examples 3-4 at the top level;
FIG. 13 is a deformation schematic diagram of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of FIG. 9 under a compressive load;
FIG. 14 is a schematic view of the deformation of a conventional straight-walled hexagonal honeycomb under a compressive load;
fig. 15 is a force-displacement graph of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of fig. 9 and a conventional straight-wall hexagonal honeycomb under a compressive load.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise specifically stated and limited, the terms "stitching", "abutting" and the like are to be understood in a broad sense, e.g., the stitching may be a conventional method or a 3D printing process. The traditional method is that a single energy dissipation curved wall is processed through a die, then straight notches with proper length and quantity are cut on each energy dissipation curved wall, a series of energy dissipation curved walls are spliced together through the notches, and then the energy dissipation curved walls are reinforced through bonding, welding and other modes. The contact can be direct contact before use or interference generated when the chiral honeycomb is impacted. At the outset, the above-mentioned terms are not only understood, but also the specific meanings of the above-mentioned terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description herein, references to the description of the terms "embodiment," "preferred embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
In order that the objects, features and advantages of the invention may be more clearly understood, there shall now be described in detail the present invention with reference to the accompanying drawings-8 and detailed description. However, the present invention may be practiced in other ways than those specifically set forth herein, and the scope of the present invention is not limited by the specific embodiments disclosed below.
Example 1
A three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb is composed of energy dissipation curved walls and a straight-wall honeycomb framework profile. Referring to fig. 1 to 5, fig. 1 is an oblique view of a three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb; FIG. 2 is a top view of a three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb; fig. 3 is a schematic diagram of a positive direction of the three-dimensional curved-wall in-phase chiral honeycomb cell of fig. 2; FIG. 4 is a schematic horizontal cross-sectional view of a three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb on a bottom layer; fig. 5 is a schematic horizontal section view of a three-dimensional curved-wall in-phase regular hexagonal chiral honeycomb on the top layer. And the energy dissipation curved wall is spliced in the honeycomb cell to form the three-dimensional curved wall in-phase regular hexagon chiral honeycomb. The formed regular hexagonal chiral honeycombs are equal in position at each wall thickness.
The straight-wall honeycomb framework profile is composed of honeycomb cells, and more specifically, the horizontal cross-sectional shapes of the honeycomb cells are regular hexagons and have chiral characteristics. More specifically, the number of the cellular cells may be set according to the destruction strength of an actual security incident.
The energy dissipation curved wall is of a curved surface structure with a wide upper part and a narrow lower part. More specifically, the curved surface structure with a wide top and a narrow bottom is as follows: the cross section shape of the energy dissipation curved wall on any horizontal plane z is a single-period sine wave type curve with the frequency w. The amplitude a (z) of the single-period sinusoidal wave curve with frequency w increases with increasing horizontal plane position z.
The energy dissipation device comprises a regular hexagonal chiral honeycomb formed by splicing and assembling a plurality of honeycomb cells and an energy dissipation curved wall, wherein curves of a single-period sine wave type curve with the frequency w of the energy dissipation curved wall in the positive direction of the honeycomb cell have the same initial phase; the single period sinusoidal wave curve with frequency w intersects its neighbors at the vertices of the cellular cell. In a preferred embodiment, the side length a of the honeycomb cell is 2 pi/w, and the amplitude a (z) of the single-period sine wave curve of the energy dissipation curved wall in each horizontal section satisfies
When the regular hexagonal chiral honeycomb is used, the energy dissipation curved walls are not mutually contradicted. In addition, the three-dimensional curved-wall same-phase regular hexagon chiral honeycomb keeps the advantage of stable force-displacement curve of the traditional straight-wall honeycomb structure, and greatly improves the total energy absorption amount and specific energy absorption ratio on the premise of not wasting extra space. The different energy dissipation curved walls are connected with each other in a stable structure form of the regular hexagon straight wall honeycomb framework, so that the integral stability is realized, and the characteristic of gentle force-displacement curve is maintained.
In addition, the axial rigidity of the energy dissipation curved wall with the wide upper part and the narrow lower part is greatly improved, so that the average value of a force-displacement curve can be greatly improved; the regular hexagonal chiral honeycomb shows a more stable and controllable deformation energy absorption mode, namely, the regular hexagonal chiral honeycomb adopts the energy dissipation curved wall with the wide top and the narrow bottom, the influence of randomness is eliminated through the geometric asymmetry, the deformation mode is easy to control, stable and reliable, and uncontrollable phenomena such as random buckling, overturning and the like caused by the unstable deformation mode of the straight-wall honeycomb energy dissipation device are avoided.
Example 2
The embodiment compares the three-dimensional curved-wall same-phase regular hexagonal chiral honeycomb with the traditional straight-wall honeycomb on the basis of the three-dimensional curved-wall same-phase regular hexagonal chiral honeycomb in the embodiment 1 in the analysis of the uniformly distributed impact load.
In the embodiment, the energy-absorbing protection effect of the assembled energy-absorbing protection device when the energy-absorbing protection device bears uniformly distributed impact loads is calculated through finite element numerical simulation. Dynamic simulations were performed using ABAQUS/Explicit.
The wall thickness of the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb and the wall thickness of the traditional straight-wall honeycomb are both 1mm, the height of the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb and the material of the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb are both 95mm, the adopted material is 201 stainless steel, the side length of the skeleton outline of the regular hexagon straight-wall honeycomb adopted by the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb is 10mm, and the side length of the traditional straight-wall honeycomb is also 10 mm. Two groups of models are arranged on the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb, and the amplitude ratios of sine wave type curves in horizontal sections of the top layer and the bottom layer are respectively Amax/Amin ═ 2 and Amax/Amin ═ 4.
The impact objects are arranged to be square rigid plates to simulate evenly distributed loads, and the impact speed is set to be 5m/s at a constant speed. And obtaining deformation characteristics and load-displacement curves of the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb and the traditional straight-wall honeycomb when the three-dimensional curved-wall in-phase regular hexagon chiral honeycomb and the traditional straight-wall honeycomb bear uniformly distributed impact loads according to numerical simulation results, wherein the specific simulation results are shown in fig. 6, 7 and 8. Fig. 6 is a schematic deformation diagram of the three-dimensional curved-wall in-phase regular hexagonal honeycomb shown in fig. 1 under a compressive load, fig. 7 is a schematic deformation diagram of a conventional straight-wall hexagonal honeycomb under a compressive load, and fig. 8 is a force-displacement curve diagram of the three-dimensional curved-wall in-phase regular hexagonal honeycomb shown in fig. 1 and the conventional straight-wall hexagonal honeycomb under a compressive load. According to the result of the attached drawing, the deformation of the three-dimensional curved-wall same-phase regular hexagon chiral honeycomb is more stable and consistent, while the deformation in the straight-wall honeycomb is not obvious and the whole body is inclined; the force-displacement curve of the three-dimensional curved wall in-phase regular hexagon chiral honeycomb is stable, and the bearing capacity is stronger.
Example 3
The present embodiment is different from embodiment 1 in that: the horizontal cross-sectional shape of the honeycomb cell of this embodiment is a regular quadrilateral, as shown in fig. 9 to 12. Fig. 9 is an oblique view of the three-dimensional curved-wall in-phase positive quadrilateral chiral honeycomb, fig. 10 is a top view of the three-dimensional curved-wall in-phase positive quadrilateral chiral honeycomb, fig. 11 is a horizontal cross-sectional view of the three-dimensional curved-wall in-phase positive quadrilateral chiral honeycomb at the bottom layer, and fig. 12 is a horizontal cross-sectional view of the three-dimensional curved-wall in-phase positive quadrilateral chiral honeycomb at the top layer.
Example 4
The method and data of example 2 are used in this example to compare the analysis of the uniform impact load of the three-dimensional curved-wall in-phase regular quadrilateral chiral honeycomb of example 3 with that of the conventional straight-wall honeycomb. Specific schematic diagrams of the modification and the comparison results are shown in fig. 13 to 15.
According to the comparison result, the three-dimensional curved-wall same-phase regular quadrilateral chiral honeycomb is more stable and consistent in deformation, and the straight-wall honeycomb is not obvious in internal deformation and has integral inclination; the force-displacement curve of the three-dimensional curved-wall same-phase regular quadrilateral chiral honeycomb is stable, and the bearing capacity is stronger.
Example 5
The present embodiment is different from embodiment 1 in that: the horizontal cross-sectional shape of the honeycomb cells of the present embodiment is other geometric shapes. The three-dimensional curved-wall in-phase chiral honeycomb formed by splicing and assembling the energy dissipation curved wall with the wide top and the narrow bottom and the straight-wall honeycomb framework has the beneficial effects of the three-dimensional curved-wall in-phase chiral honeycomb of the embodiments 1 and 3.
Example 6
The present embodiment is different from embodiment 1 in that: the energy dissipation curved wall and the straight wall honeycomb framework are processed by adopting a traditional method or 3D printing. The traditional method is that a single curved wall is processed through a die, then straight notches with proper length and quantity are cut on each curved surface, a series of energy dissipation curved walls are spliced together through the notches, and then the energy dissipation curved walls are reinforced through bonding, welding and other modes.
Compared with the prior art, the beneficial effects of the embodiment are as follows: compared with a straight-wall honeycomb energy dissipation device, the three-dimensional curved-wall in-phase chiral honeycomb of the embodiment has the advantages that the performance of the energy dissipation curved wall and the performance of the chiral honeycomb are obviously improved. Namely, the axial rigidity of the energy dissipation curved wall with the wide upper part and the narrow lower part is greatly improved, and the average value of a force-displacement curve can be greatly improved; the chiral honeycomb shows a more stable and controllable deformation energy absorption mode, namely the chiral honeycomb adopts an energy dissipation curved wall with a wide top and a narrow bottom, the influence of randomness is eliminated through geometric asymmetry, the deformation mode is easy to control, stable and reliable, and uncontrollable phenomena such as random buckling, overturning and the like caused by instability of the deformation mode of the straight-wall honeycomb energy dissipater are avoided. The three-dimensional curved-wall in-phase chiral honeycomb keeps the advantage of stable force-displacement curve of the traditional straight-wall honeycomb structure, and greatly improves the total energy absorption amount and specific energy absorption ratio on the premise of not wasting extra space. The different energy dissipation curved walls are connected with each other in a stable structure mode of the straight-wall honeycomb framework, so that the integral stability is realized, and the characteristic of gentle force-displacement curve is maintained.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A three-dimensional curved-wall same-phase regular polygon chiral honeycomb is characterized in that: the regular polygon chiral honeycomb is composed of energy dissipation curved walls and straight wall honeycomb framework profiles, the energy dissipation curved walls are not mutually collided when the regular polygon chiral honeycomb is impacted, the straight wall honeycomb framework profiles are composed of honeycomb cells, and the energy dissipation curved walls are spliced in the honeycomb cells to form a three-dimensional curved wall in-phase regular polygon chiral honeycomb.
2. The chiral honeycomb of claim 1, wherein: the honeycomb cell is characterized by chirality.
3. The chiral honeycomb of claim 2, wherein: the energy dissipation curved wall is of a curved surface structure with a wide upper part and a narrow lower part.
4. The chiral honeycomb of claim 3, wherein: the horizontal cross-sectional shape of the honeycomb cells includes, but is not limited to, regular hexagons and regular quadrilaterals.
5. The chiral honeycomb of claim 4, wherein: the cross section shape of the energy dissipation curved wall on any horizontal plane z is a single-period sine wave type curve with the frequency w.
6. The chiral honeycomb of claim 5, wherein: the amplitude a (z) of the single-period sinusoidal wave curve with frequency w increases with increasing horizontal plane position z.
7. The chiral honeycomb of claim 6, wherein: the curves of the single-period sine wave type curve with the frequency w in the positive direction of the honeycomb cell in which the curve is positioned have the same initial phase; the single-period sine wave curve with the frequency w and the adjacent curve intersect at the vertex of the honeycomb cell.
8. The chiral honeycomb of any one of claims 3-7, wherein: the side length a of the honeycomb cell is 2 pi/w.
9. The chiral honeycomb of claim 8, wherein: the amplitude A (z) of the single-period sine wave type curve of each horizontal section of the energy dissipation curved wall satisfies
10. The chiral honeycomb of any one of claims 1-7, wherein: the wall thickness of each position of the regular polygon chiral honeycomb is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449191.6A CN114135626A (en) | 2021-11-29 | 2021-11-29 | Three-dimensional curved-wall same-phase regular polygon chiral honeycomb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111449191.6A CN114135626A (en) | 2021-11-29 | 2021-11-29 | Three-dimensional curved-wall same-phase regular polygon chiral honeycomb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114135626A true CN114135626A (en) | 2022-03-04 |
Family
ID=80386538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111449191.6A Pending CN114135626A (en) | 2021-11-29 | 2021-11-29 | Three-dimensional curved-wall same-phase regular polygon chiral honeycomb |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114135626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857193A (en) * | 2022-04-19 | 2022-08-05 | 福建工程学院 | Clamping groove type thin-walled tube energy absorption system easy to disassemble and assemble and capable of achieving three-dimensional self-locking |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327410A (en) * | 1999-08-30 | 2001-12-19 | 日本碍子株式会社 | Corrugated wall honeycomb structure and production method thereof |
| CN105398099A (en) * | 2015-10-26 | 2016-03-16 | 湖南大学 | Gradient honeycomb complex, and preparation method and application structure thereof |
| CN108319384A (en) * | 2017-01-18 | 2018-07-24 | 上海大我科技有限公司 | Metal grill touch sensor and its conductive film of application |
| CN109573939A (en) * | 2018-10-24 | 2019-04-05 | 永康国科康复工程技术有限公司 | Bilayer strain matrix and stretchable electronic device |
| CN110406178A (en) * | 2019-06-03 | 2019-11-05 | 哈尔滨工程大学 | Double gradient energy-obsorbing and damping sandwich structures of a kind of metal/composite material multilayer and preparation method thereof |
| CN212980107U (en) * | 2020-06-22 | 2021-04-16 | 重庆工程职业技术学院 | Automobile sound-insulation noise-reduction interior trimming panel |
| CN113459507A (en) * | 2021-06-30 | 2021-10-01 | 浙江大学 | Inkfish bone-imitated impact-resistant structure and material increase preparation method thereof |
-
2021
- 2021-11-29 CN CN202111449191.6A patent/CN114135626A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327410A (en) * | 1999-08-30 | 2001-12-19 | 日本碍子株式会社 | Corrugated wall honeycomb structure and production method thereof |
| CN105398099A (en) * | 2015-10-26 | 2016-03-16 | 湖南大学 | Gradient honeycomb complex, and preparation method and application structure thereof |
| CN108319384A (en) * | 2017-01-18 | 2018-07-24 | 上海大我科技有限公司 | Metal grill touch sensor and its conductive film of application |
| CN109573939A (en) * | 2018-10-24 | 2019-04-05 | 永康国科康复工程技术有限公司 | Bilayer strain matrix and stretchable electronic device |
| CN110406178A (en) * | 2019-06-03 | 2019-11-05 | 哈尔滨工程大学 | Double gradient energy-obsorbing and damping sandwich structures of a kind of metal/composite material multilayer and preparation method thereof |
| CN212980107U (en) * | 2020-06-22 | 2021-04-16 | 重庆工程职业技术学院 | Automobile sound-insulation noise-reduction interior trimming panel |
| CN113459507A (en) * | 2021-06-30 | 2021-10-01 | 浙江大学 | Inkfish bone-imitated impact-resistant structure and material increase preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857193A (en) * | 2022-04-19 | 2022-08-05 | 福建工程学院 | Clamping groove type thin-walled tube energy absorption system easy to disassemble and assemble and capable of achieving three-dimensional self-locking |
| CN114857193B (en) * | 2022-04-19 | 2023-04-14 | 福建工程学院 | Clamping groove type thin-walled tube energy absorption system easy to disassemble and assemble and capable of achieving three-dimensional self-locking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN114060445A (en) | Three-dimensional curved-wall mixed-phase regular quadrilateral chiral honeycomb | |
| CN108082102B (en) | Negative poisson ratio structural component based on concave hexagonal unit | |
| CN111022538B (en) | Multifunctional gradient energy absorption box | |
| CN114135626A (en) | Three-dimensional curved-wall same-phase regular polygon chiral honeycomb | |
| CN113833794B (en) | Vibration isolation base with positive and negative Poisson's ratio honeycomb type structure | |
| CN113819175A (en) | Multi-stage honeycomb structure and design method | |
| CN110509877B (en) | High-efficient crashproof car energy-absorbing box | |
| CN211817108U (en) | Assembled mild steel damper | |
| CN218205006U (en) | Modular multistage metal yield type attenuator | |
| CN215890931U (en) | Self-locking thin-wall tube structure energy absorption system with negative Poisson ratio effect | |
| CN203878805U (en) | Steel plate damping wall | |
| CN201056770Y (en) | Node energy-consumption device | |
| CN113829676B (en) | Modular folding sandwich structure unit for dynamic load protection and sandwich structure | |
| CN113757281B (en) | Energy-absorbing unit body based on multistable state and energy-absorbing material | |
| CN114000603A (en) | Building shock-absorbing structure and multidimensional energy dissipation damper thereof | |
| CN210310252U (en) | High-efficient buffering energy-absorbing device of car | |
| CN210919092U (en) | Corrugated constant-resistance energy absorption device | |
| CN212455298U (en) | Fractal gradient cap-shaped composite structure | |
| CN210507887U (en) | Honeycomb-shaped mild steel damper | |
| CN112861270A (en) | Metamaterial energy absorption structure based on Boolean operation | |
| CN105603865B (en) | Temperature control damper for bridge | |
| CN214985681U (en) | Composite hexagonal energy absorption structure | |
| CN219604591U (en) | Combined shearing type damper | |
| CN216587111U (en) | Porous combination high ductility metal damper | |
| CN109990193A (en) | A kind of multistage concertina honeycomb |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |