CN114277655A - Corrugated steel web plate with phononic crystal - Google Patents
Corrugated steel web plate with phononic crystal Download PDFInfo
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- CN114277655A CN114277655A CN202111230555.1A CN202111230555A CN114277655A CN 114277655 A CN114277655 A CN 114277655A CN 202111230555 A CN202111230555 A CN 202111230555A CN 114277655 A CN114277655 A CN 114277655A
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- corrugated steel
- steel web
- plate
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- frustum
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- 239000013078 crystal Substances 0.000 title claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 41
- 239000010959 steel Substances 0.000 title claims abstract description 41
- 125000006850 spacer group Chemical group 0.000 claims description 14
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000003491 array Methods 0.000 abstract description 2
- 239000004038 photonic crystal Substances 0.000 description 9
- 230000007547 defect Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000000411 transmission spectrum Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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Abstract
A corrugated steel web with phononic crystals relates to a corrugated steel web, wherein peak plates (2) and trough plates (3) are arranged in a staggered manner, an inclined plate (1) is arranged between each peak plate (2) and each trough plate (3), a plurality of frustum-shaped grooves (4) with large openings and small bottoms are respectively arranged on each peak plate (2) and each trough plate (3) at intervals, and the phononic crystals (5) are respectively arranged in each frustum-shaped groove (4); according to the invention, the plurality of frustum-shaped grooves are arranged on the surface of the corrugated steel web according to M rows and N columns of double-period arrays, and the phononic crystal with the conical rod is respectively arranged in each frustum-shaped groove, so that harmful waves generated when the corrugated steel web vibrates are absorbed by using the vibrator, and the purpose of keeping the structure of the corrugated steel web stable is achieved by the three-dimensional wave absorbing structure.
Description
Technical Field
The invention relates to a corrugated steel web plate, in particular to a corrugated steel web plate with a phononic crystal.
Background
The periodic composite structure (phononic crystal) is composed of one material or a plurality of materials. When more than two materials are used as constituent elements, the interconnected materials are called matrix, and the material embedded in the matrix is called scatterer. The phononic crystal can be divided into one-dimensional, two-dimensional and three-dimensional systems according to the periodicity of the phononic crystal in three spatial directions. Phononic crystals have a forbidden band/band gap characteristic, i.e. vibrations in a specific frequency range cannot propagate in the structure. When the phononic crystal has defects, vibration corresponding to the frequency of the defects can be localized at point defects, and vibration localization occurs or propagates along line defects.
When the corrugated steel web is applied to bridge engineering, the corrugated steel web is made of metal materials, so that resonance is easily caused, and the structure of a bridge is damaged. If the bicycle phononic crystal is arranged at a specific part of an engineering structure or the structural design is carried out by utilizing the concept of a periodic composite structure, the vibration in a specific frequency band is prevented from being transmitted in the structure, and the filtering function of the structure is realized; or local missing or disorder missing space inversion symmetry or mirror symmetry is set according to engineering requirements, and a waveguide channel switch is controlled by designing a vibrating propagation path to realize a stable waveguide effect. The bicycle phononic crystal corrugated plate is a novel light structure which is periodically changed along two directions, and the structure not only meets the mechanical property requirements of strength and rigidity, but also has stronger energy-absorbing quality ratio. The bi-periodic plane can produce a larger bandwidth bandgap than the monocycle plane, with most of the energy of the wave in the forbidden band being attenuated to a large extent along the direction of propagation of the wave, while the wave in the passband can propagate almost without loss. The bi-periodic plane band gap characteristic can generate band gaps of low frequency and wide frequency through modulating parameters, and a new idea is provided for low-frequency vibration reduction design.
As mentioned above, the introduction of the bi-periodic phonon crystal corrugated plate with elastic wave forbidden band characteristics into the civil engineering structure field will realize the control of elastic wave propagation and energy dissipation, therefore, the bi-periodic phonon crystal corrugated plate has very important application value in the civil engineering structure vibration control and structure damage state detection field.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses a corrugated steel web plate with a photonic crystal, wherein a plurality of frustum-shaped grooves are arranged on the surface of the corrugated steel web plate according to M rows and N columns of double periodic arrays, and the photonic crystal with a conical rod is arranged in each frustum-shaped groove respectively, so that harmful waves generated when the corrugated steel web plate vibrates are absorbed by using a vibrator, and the purpose of keeping the structure of the corrugated steel web plate stable is achieved by using a three-dimensional wave absorbing structure.
In order to realize the purpose, the invention adopts the following technical scheme:
a corrugated steel web plate with a phononic crystal comprises a wave peak plate and a wave trough plate, wherein the wave peak plate and the wave trough plate are arranged in a staggered manner, an inclined plate is respectively arranged between each wave peak plate and each wave trough plate, a plurality of pyramid-shaped grooves with large mouths and small mouths are respectively arranged on each wave peak plate and each wave trough plate at intervals, the phononic crystal is respectively arranged in each pyramid-shaped groove and comprises a vibrator and a spacer block, the vibrator is of a cylindrical structure, a stand column is arranged at the central part of the top of the vibrator, a plurality of conical rods are arranged at intervals around the stand column at the top of the vibrator, the upper end of each conical rod is respectively provided with an end cap A, a touch hand A is respectively arranged at the position, facing the stand column and the position facing away from the stand column, on the stand column corresponding to the touch hands A facing the stand column, a horn mouth extending upwards is arranged at the edge of the top of the vibrator, and an inserting rod is arranged at the lower end of the vibrator, the lower end of the inserted link is provided with a ball head, the diameter of the ball head is slightly larger than that of the inserted link, a round groove is arranged in the middle of the bottom of the spacer block, the top of the spacer block is provided with an insertion hole penetrating through the round groove, the inserted link is inserted into the insertion hole, the ball head is positioned in the round groove, and the bottom of the spacer block is fixedly connected with the bottom of the pyramid frustum-shaped groove.
The plurality of phononic crystals are arrayed on the wave crest plate and the wave trough plate according to M rows and N columns in a double-period mode.
The corrugated steel web plate with the phononic crystal is characterized in that the spacer blocks are made of rubber.
The corrugated steel web plate with the photonic crystal is characterized in that the vibrator is made of metal.
The corrugated steel web with the photonic crystal has the upper end of the horn mouth and the opening part of the frustum-shaped groove, and the upper ends of the cone rod and the upright post respectively extend out of the opening part of the frustum-shaped groove.
The corrugated steel web plate with the phononic crystal, the phononic crystal and the frustum-shaped groove are coaxially arranged.
The corrugated steel web plate with the phononic crystal has equal length with the inserted rod and the inserting hole.
The corrugated steel web plate with the photonic crystals is characterized in that the number of the conical rods arranged in each frustum-shaped groove is eight.
The diameter of the conical bottom of each conical rod of the corrugated steel web plate with the phononic crystal is respectively the same as that of the end cap A arranged at the end part of the conical rod.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
according to the corrugated steel web plate with the phononic crystals, the plurality of frustum-shaped grooves are arranged on the surface of the corrugated steel web plate according to M rows and N columns in a double-period array manner, and the phononic crystals with the conical rods are respectively arranged in each frustum-shaped groove, so that harmful waves generated when the corrugated steel web plate vibrates are absorbed by using the vibrators, and the purpose of keeping the structure of the corrugated steel web plate stable is achieved by the aid of the three-dimensional wave absorbing structure; the invention has the characteristics of unique originality, ingenious design, good use effect, convenient construction and the like, and has good popularization value and wide market prospect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the pyramid-shaped grooves and phononic crystal according to the present invention;
FIG. 3 is a schematic view of an assembly structure of a vibrator and a spacer according to the present invention;
FIG. 4 is a schematic diagram of the structure of a phononic crystal of the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural view of a spacer according to the present invention;
FIG. 7 is a graph of frequency ranges for a parameter of use of the present invention;
fig. 8 is a finite element transmission spectrum at a certain parameter when the present invention is used.
In the figure: 1. a sloping plate; 2. a wave plate; 3. a trough plate; 4. a frustum pyramid shaped groove; 5. a phononic crystal; 6. an end cap; 7. a tentacle A; 8. a tapered rod; 9. a bell mouth; 10. a vibrator; 11. a spacer block; 12. inserting a rod; 13. a ball head; 14. a jack; 15. a circular groove; 16. a column; 17. tentacle B.
Detailed Description
The present invention will be explained in more detail by the following examples, which are not intended to limit the present invention, and all changes and modifications within the scope of the present invention are intended to be protected by the disclosure of the present invention;
the corrugated steel web with the photonic crystal described with reference to fig. 1 to 6 includes a peak plate 2 and a trough plate 3, the peak plate 2 and the trough plate 3 are arranged in a staggered manner, an inclined plate 1 is respectively arranged between each peak plate 2 and each trough plate 3, a plurality of pyramid-shaped grooves 4 with large openings and small bottoms are respectively arranged on each peak plate 2 and each trough plate 3 at intervals, a photonic crystal 5 is respectively arranged in each pyramid-shaped groove 4, the photonic crystal 5 and the pyramid-shaped grooves 4 are coaxially arranged, the photonic crystal 5 includes a vibrator 10 and a spacer 11, the vibrator 10 is a cylindrical structure, a column 16 is arranged at the center of the top of the vibrator 10, a plurality of conical rods 8 are arranged at intervals around the column 16 at the top of the vibrator 10, an end cap a6 is respectively arranged at the upper end of each conical rod 8, and tentacles a7 are respectively arranged on each end cap a6 at positions facing the column 16 and back to the column 16, the upright posts 16 corresponding to a plurality of tentacles A7 facing the upright posts 16 are respectively provided with a tentacle B17, the edge of the top of the vibrator 10 is provided with a horn mouth 9 extending upwards, the upper end of the horn mouth 9 is flush with the mouth of the frustum-shaped groove 4, the upper ends of the cone rod 8 and the upright posts 16 respectively extend out of the mouth of the frustum-shaped groove 4, the lower end of the vibrator 10 is provided with an insert rod 12, the lower end of the insert rod 12 is provided with a ball head 13, the diameter of the ball head 13 is slightly larger than that of the insert rod 12, the middle position of the bottom of the spacer block 11 is provided with a circular groove 15, the top of the spacer block 11 is provided with a jack 14 penetrating through the circular groove 15, the insert rod 12 is inserted into the jack 14, the ball head 13 is positioned in the circular groove 15, the insert rod 12 and the jack 14 are as long as the plug rod 12 and the jack 14, the bottom of the spacer block 11 is fixedly connected with the groove bottom of the frustum-shaped groove 4, a plurality of phononic crystals 5 are arrayed on the crest plate 2 and the trough plate 3 according to M rows and N columns in a double-column double-periodic array, the material of spacer 11 is rubber, and the material of oscillator 10 is metal, and the quantity of the awl pole 8 that each pyramid frustum shape recess 4 was equipped with is eight respectively, and the diameter of the awl end of each awl pole 8 is the same with the diameter of setting up end cap A6 at this awl pole 8 tip respectively.
In the implementation of the corrugated steel web plate with the phononic crystals, in the construction of a bridge, the bottoms of the partition blocks 11 with the same number as the frustum-shaped grooves 4 are fixedly connected with the bottoms of the frustum-shaped grooves 4 respectively, the vibrators 10 are inserted into the insertion holes 14 formed in the partition blocks 11 by using the insertion rods 12 arranged on the vibrators, so that the phononic crystals 5 arranged in M rows and N columns in a double-period array form a three-dimensional wave absorbing structure by using the touch hands A7 arranged at the end part of the conical rod 8 and the touch hands B17 arranged at the end part of the upright post 16, a plurality of vertical phononic crystals are connected end to form a corrugated steel web plate group, a bridge deck is erected at the top of the corrugated steel web plate group, a bottom plate is arranged at the bottom of the corrugated steel web plate group, when a bridge is built and used, when a vehicle at the top of the bridge vibrates the bridge, the generated sound waves are inhibited by the phononic crystals 5 arranged in the frustum-shaped grooves 4 with large openings and small bottoms at intervals on each wave peak plate 2 and each wave trough plate 3 respectively, thereby eliminating resonance and prolonging the service life of the bridge.
Taking the invention with a phononic crystal 5 under a certain parameter as an example, the forbidden band of the structure is calculated by using a finite element method; the band structure is shown in FIG. 7, and the band gap frequency range of the bending vibration is 4.7Hz-5.8 Hz.
In order to verify whether the invention can have an attenuation effect on low-frequency vibration in engineering, the transmission spectrum of the limited unit is calculated; as shown in FIG. 8, it can be seen that when the frequency reaches 4.7Hz, the transmission coefficient is significantly attenuated from 0dB, and from 4.7Hz to 5.8Hz, the transmission coefficient is also lower than 0dB, and significant attenuation occurs.
From the above, the transmission coefficient is obviously attenuated in the band gap frequency range, the starting frequency and the cut-off frequency of the forbidden band calculated by the transmission spectrum are basically consistent with those in the energy band structure, the correctness and the effectiveness of the calculation method of the forbidden band are proved, and the invention of the phononic crystal 5 can be used for attenuating the low-frequency vibration in the engineering.
The present invention is not described in detail in the prior art.
Claims (9)
1. The utility model provides a take corrugated steel web of phononic crystal, includes peak board (2) and trough board (3), characterized by: the wave crest plates (2) and the wave trough plates (3) are arranged in a staggered manner, an inclined plate (1) is arranged between each wave crest plate (2) and each wave trough plate (3), a plurality of pyramid-shaped grooves (4) with large openings and small bottoms are respectively arranged on each wave crest plate (2) and each wave trough plate (3) at intervals, a phononic crystal (5) is arranged in each pyramid-shaped groove (4), the phononic crystal (5) comprises a vibrator (10) and a partition block (11), the vibrator (10) is of a cylindrical structure, an upright post (16) is arranged at the center of the top of the vibrator (10), a plurality of conical rods (8) are arranged at intervals around the upright post (16) at the top of the vibrator (10), end caps A (6) are respectively arranged at the upper ends of the conical rods (8), and tentacles A (7) are respectively arranged at positions, facing the upright post (16) and back to the upright post (16), on each end cap A (6), the electric shock absorber is characterized in that tentacles B (17) are respectively arranged on the stand columns (16) corresponding to the tentacles A (7) facing the stand columns (16), horn mouths (9) extending upwards are arranged at the edges of the tops of the vibrators (10), insertion rods (12) are arranged at the lower ends of the vibrators (10), ball heads (13) are arranged at the lower ends of the insertion rods (12), the diameter of the ball heads (13) is slightly larger than that of the insertion rods (12), circular grooves (15) are arranged in the middle of the bottoms of the partition blocks (11), insertion holes (14) penetrating through the circular grooves (15) are formed in the tops of the partition blocks (11), the insertion holes (14) are inserted into the insertion rods (12), the ball heads (13) are located in the circular grooves (15), and the bottoms of the partition blocks (11) are fixedly connected with the bottoms of the pyramid frustum-shaped grooves (4).
2. The corrugated steel web with phononic crystals of claim 1, wherein: a plurality of phononic crystals (5) are arrayed on the wave crest plate (2) and the wave trough plate (3) according to M rows and N columns in a double-period array.
3. The corrugated steel web with phononic crystals of claim 1, wherein: the material of the spacer block (11) is rubber.
4. The corrugated steel web with phononic crystals of claim 1, wherein: the vibrator (10) is made of metal.
5. The corrugated steel web with phononic crystals of claim 1, wherein: the upper end of the bell mouth (9) is flush with the mouth of the frustum-shaped groove (4), and the upper ends of the cone rod (8) and the upright post (16) respectively extend out of the mouth of the frustum-shaped groove (4).
6. The corrugated steel web with phononic crystals of claim 1, wherein: the phonon crystal (5) and the pyramid-shaped groove (4) are coaxially arranged.
7. The corrugated steel web with phononic crystals of claim 1, wherein: the insertion rod (12) and the insertion hole (14) are equal in length.
8. The corrugated steel web with phononic crystals of claim 1, wherein: the number of the conical rods (8) arranged in each pyramid-shaped groove (4) is eight.
9. The corrugated steel web with phononic crystals of claim 1, wherein: the diameter of the cone bottom of each cone rod (8) is respectively the same as that of the end cap A (6) arranged at the end part of the cone rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230555.1A CN114277655A (en) | 2021-10-22 | 2021-10-22 | Corrugated steel web plate with phononic crystal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230555.1A CN114277655A (en) | 2021-10-22 | 2021-10-22 | Corrugated steel web plate with phononic crystal |
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| Publication Number | Publication Date |
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| CN114277655A true CN114277655A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111230555.1A Pending CN114277655A (en) | 2021-10-22 | 2021-10-22 | Corrugated steel web plate with phononic crystal |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050140465A1 (en) * | 2003-12-30 | 2005-06-30 | Keh-Long Hwu | Noise suppression method for wave filter |
| EP2487793A1 (en) * | 2011-02-11 | 2012-08-15 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Method for manufacturing an acoustic device including a phononic-crystal structure with cone-shaped inclusions which determine a stop band of the acoustic device |
| CN106373557A (en) * | 2016-08-25 | 2017-02-01 | 北京交通大学 | Reconfigurable phonon functional waveguide structure and manufacturing method thereof |
| CN108036017A (en) * | 2017-12-07 | 2018-05-15 | 上海宇航系统工程研究所 | Multimode locally resonant type phonon crystal vibration isolator |
| CN108611957A (en) * | 2018-04-09 | 2018-10-02 | 东南大学 | A kind of period composite construction box beam |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN210639984U (en) * | 2019-06-06 | 2020-05-29 | 东南大学 | Three-dimensional gradient periodic structure plate with multiple band gap characteristics |
| CN212256904U (en) * | 2019-11-13 | 2020-12-29 | 中国人民解放军国防科技大学 | High-rigidity high-damping local resonance unit for constructing acoustic metamaterial structure |
| CN112227177A (en) * | 2020-10-29 | 2021-01-15 | 东南大学 | Periodic box girder structure with vibrators arranged on diaphragm plate |
-
2021
- 2021-10-22 CN CN202111230555.1A patent/CN114277655A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050140465A1 (en) * | 2003-12-30 | 2005-06-30 | Keh-Long Hwu | Noise suppression method for wave filter |
| EP2487793A1 (en) * | 2011-02-11 | 2012-08-15 | Commissariat à l'Énergie Atomique et aux Énergies Alternatives | Method for manufacturing an acoustic device including a phononic-crystal structure with cone-shaped inclusions which determine a stop band of the acoustic device |
| CN106373557A (en) * | 2016-08-25 | 2017-02-01 | 北京交通大学 | Reconfigurable phonon functional waveguide structure and manufacturing method thereof |
| CN108036017A (en) * | 2017-12-07 | 2018-05-15 | 上海宇航系统工程研究所 | Multimode locally resonant type phonon crystal vibration isolator |
| CN108611957A (en) * | 2018-04-09 | 2018-10-02 | 东南大学 | A kind of period composite construction box beam |
| CN108643024A (en) * | 2018-04-09 | 2018-10-12 | 东南大学 | A kind of period composite construction setback plate |
| CN210639984U (en) * | 2019-06-06 | 2020-05-29 | 东南大学 | Three-dimensional gradient periodic structure plate with multiple band gap characteristics |
| CN212256904U (en) * | 2019-11-13 | 2020-12-29 | 中国人民解放军国防科技大学 | High-rigidity high-damping local resonance unit for constructing acoustic metamaterial structure |
| CN112227177A (en) * | 2020-10-29 | 2021-01-15 | 东南大学 | Periodic box girder structure with vibrators arranged on diaphragm plate |
Non-Patent Citations (1)
| Title |
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Application publication date: 20220405 |
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