CN116085414A - Phonon crystal composite vibration damper for base, preparation method thereof and vibration damper system - Google Patents
Phonon crystal composite vibration damper for base, preparation method thereof and vibration damper system Download PDFInfo
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- CN116085414A CN116085414A CN202211501994.6A CN202211501994A CN116085414A CN 116085414 A CN116085414 A CN 116085414A CN 202211501994 A CN202211501994 A CN 202211501994A CN 116085414 A CN116085414 A CN 116085414A
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- 239000002131 composite material Substances 0.000 title claims abstract description 92
- 239000013078 crystal Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 238000013016 damping Methods 0.000 claims abstract description 60
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000002923 metal particle Substances 0.000 claims abstract description 18
- 239000007769 metal material Substances 0.000 claims abstract description 6
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 239000004038 photonic crystal Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 description 16
- 230000000694 effects Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000009715 pressure infiltration Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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- 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
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members
- F16F7/121—Vibration-dampers; Shock-absorbers using plastic deformation of members the members having a cellular, e.g. honeycomb, structure
-
- 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
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0266—Materials; Material properties solids porosity
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a phonon crystal composite vibration damper for a base, a preparation method thereof and a vibration damper system. The phonon crystal composite vibration damper for the base comprises an upper panel, a lower panel and a porous composite structure connected between the upper panel and the lower panel, wherein the porous composite structure is formed by compounding porous metal materials and damping materials, a cavity is formed in the upper panel, and metal particles are filled in the cavity. The phonon crystal composite vibration damper for the base provided by the invention adopts the damping characteristic of a porous metal and damping material composite structure, and simultaneously adds a particle damping vibration damping technology, and can form the phonon crystal composite vibration damper for the base vibration damping by structural design.
Description
Technical Field
The invention relates to the field of ship vibration and noise reduction, in particular to a phonon crystal composite vibration damper for a base, a preparation method thereof and a vibration damping system.
Background
The base is used as an installation platform of the sound source equipment on the ship and is an important way for transmitting the vibration of the sound source equipment to the ship body structure. The vibration reduction design of the base is an important link for reducing vibration energy transmission of sound source equipment and controlling the vibration of a ship body structure and underwater radiation noise.
At present, one of the common base vibration reduction measures of the water surface ship is to arrange steel solid vibration-resistant square steel at the bottom of the base, and the mode can obtain a certain vibration reduction effect, but the whole vibration reduction effect is limited, and more weight resources are easy to occupy after the water surface ship is widely used.
Disclosure of Invention
The invention mainly aims to provide a phonon crystal composite vibration damper for a base, a preparation method thereof and a vibration damper system, and aims to improve the vibration damper effect of a ship base.
In order to achieve the above object, the present invention provides a phonon crystal composite vibration damping device for a susceptor, comprising an upper panel, a lower panel, and a porous composite structure connecting between the upper panel and the lower panel, wherein,
the porous composite structure is formed by compounding a porous metal material and a damping material, a cavity is formed in the upper panel, and metal particles are filled in the cavity.
Preferably, the volume of the metal particles in the cavity accounts for 30-70% of the total volume of the cavity.
Preferably, a gap is provided between the bottom end surface of the upper panel and the top end surface of the lower panel.
Preferably, fasteners are provided on both the upper and lower panels to connect the porous composite structure.
Preferably, the upper panel comprises an upper frame and two support plates positioned at the bottom of the upper frame, the interior of the upper frame is hollow and is filled with metal particles, and the two support plates and the bottom end surface of the upper frame form a groove structure so as to be contained outside the porous composite structure.
Preferably, the lower panel comprises two side plates and a bottom plate connected with the bottoms of the two side plates, the two side plates and the bottom plate jointly form a groove structure so as to be contained outside the porous composite structure, and a gap is arranged between the top end face of the side plate and the bottom end face of the supporting plate.
Preferably, the distance between the two support plates is equal to the distance between the two bottom plates.
Preferably, the thickness of both the support plate and the side plate is not less than 3mm.
The invention further provides a preparation method of the phonon crystal composite vibration damper for the base, which comprises the following steps:
respectively manufacturing an upper panel, a lower panel and a porous composite structure, wherein the upper panel is manufactured by welding a plurality of metal plates, metal particles are filled in a cavity of the upper panel between the upper panel and the lower panel, and damping materials are permeated into holes in the porous metal structure to form the porous composite structure by heating and normal-pressure permeation or vacuum auxiliary permeation;
processing mounting holes on the upper panel, the lower panel and the porous composite structure;
the fasteners are passed through the upper panel, the lower panel and the mounting holes in the porous composite structure, thereby connecting both the upper panel and the lower panel to the porous composite structure.
The invention further provides a damping system, which comprises the phonon crystal composite damping device for the base and further comprises the base, wherein a web plate and a toggle plate of the base are respectively welded with an upper panel and a lower panel of the phonon crystal composite damping device for the base, and the upper panel and the lower panel are made of the same material as the base.
The phonon crystal composite vibration damper for the base provided by the invention adopts the damping characteristic of a porous metal and damping material composite structure, and simultaneously adds a particle damping vibration damping technology, and can form the phonon crystal composite vibration damper for the base vibration damping by structural design. Taking a phonon crystal composite vibration reduction module prepared from aluminum porous metal with the porosity of about 70% as an example, the weight of the phonon crystal composite vibration reduction module is only about 65% of that of steel solid vibration reduction square steel with the same size specification, and the vibration reduction effect of the base can be improved by more than 2 dB. In addition, the phonon crystal composite vibration damper for the base has the advantages of simple structure, easy realization and good vibration damping effect.
Drawings
FIG. 1a is a schematic top view of a photonic crystal composite vibration damper for a susceptor according to the present invention;
FIG. 1b is a schematic view of the structure in the direction A shown in FIG. 1 a;
FIG. 1c is a schematic view of the structure in the direction B shown in FIG. 1 a;
FIG. 2 is a schematic view of the structure of the upper panel of the phononic crystal composite vibration damping device for a base according to the present invention;
FIG. 3 is a schematic view of the structure of the lower panel of the phononic crystal composite vibration damping device for a base of the present invention;
FIG. 4 is a schematic view of a shock absorbing system according to the present invention;
FIG. 5 is a schematic view of the A-direction structure of the shock absorbing system shown in FIG. 4;
FIG. 6 is a schematic view of the B-direction structure of the shock absorbing system shown in FIG. 4.
In the figure, 1-upper panel, 2-metal particles, 3-porous composite structure, 4-fastener, 5-lower panel and 6-phonon crystal composite vibration damper.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that, in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The invention provides a phonon crystal composite vibration damper for a base.
Referring to fig. 1a to 3, in the preferred embodiment, a phonon crystal composite vibration damping device for a susceptor includes an upper panel 1, a lower panel 5, and a porous composite structure 3 connecting between the upper panel 1 and the lower panel 5, wherein,
the porous composite structure 3 is formed by compounding a porous metal material and a damping material, a cavity is arranged in the upper panel 1, and metal particles 2 are filled in the cavity.
Further, the volume ratio of the metal particles 2 in the cavity to the total volume of the cavity is 30-70%. By adopting the volume ratio range, collision impact among metal particles can be effectively exerted, and vibration energy is dissipated.
The porosity of the porous metal material is 40% -90%, the porosity is controlled in the range, and the damping vibration attenuation performance of the porous metal structure can be effectively exerted.
Further, referring to fig. 1b, a gap is provided between the bottom end surface of the upper panel 1 and the top end surface of the lower panel 5. That is, the height dimension (H) > (upper panel 1 height h1+lower panel 5 height H2) of the photonic crystal composite vibration damping module is set to avoid the formation of an acoustic short circuit by direct contact of the upper panel 1 and the lower panel 5.
Further, fasteners 4 are provided on both the upper panel 1 and the lower panel 5 to connect it to the porous composite structure 3. The fasteners 4 comprise bolts, flat washers, spring washers, nuts for connecting the porous composite structure 3 with the upper and lower panels 1, 5, respectively. The distance (a) between two adjacent groups of fasteners 4 of the same panel in the length direction is not more than 220mm.
Specifically, in this embodiment, referring to fig. 2, the upper panel 1 includes an upper frame and two support plates located at the bottom of the upper frame, the interior of the upper frame is hollow to be filled with metal particles 2, and the bottom end surfaces of the two support plates and the upper frame form a groove structure to be contained outside the porous composite structure 3.
In this embodiment, referring to fig. 3, the lower panel 5 includes two side plates and a bottom plate connected to the bottoms of the two side plates, the two side plates and the bottom plate together form a groove structure to be contained outside the porous composite structure 3, and a gap is provided between the top end surface of the side plate and the bottom end surface of the supporting plate.
Specifically, the height dimension (h 1) of the upper panel 1 is about 1/2 of the width dimension (B), the height dimension (h 2) of the lower panel 5 coincides with the width dimension (B), and the length dimensions (L) of the upper panel 1 and the lower panel 5 are determined according to the base design dimensions.
Further, the thickness of the supporting plate and the side plate is not less than 3mm. The distance between the two support plates is equal to the distance between the two bottom plates.
When the phonon crystal composite vibration damper is installed, the phonon crystal composite vibration damper is installed in series with an equipment installation base, the installation position is flexible, the phonon crystal composite vibration damper can be installed below a base panel, or installed in the middle of a base web plate and a toggle plate, or installed between the base and a ship body structure, and the original interface size and connection mode of the base, the equipment and the ship body structure are not changed by adopting welding connection.
The porous metal is a functional structural material with a large number of three-dimensional netlike holes gathered inside, and is prepared by adopting mature processes such as a casting method, a sintering method and the like in industry. The porous metal has good damping performance, and the damping mechanism is derived from stress concentration and mode conversion generated during preparation around the pores in the porous metal, and dynamic modulus difference exists at the interfaces of the pores and metal substances, so that nonuniform expansion or distortion of the pores is caused, and the external strain energy is dissipated and converted into heat energy. The porous metal has the characteristic of high porosity, so that the porous metal has unique multifunctional composite characteristics and mainly comprises the effects of low density, high strength and toughness, impact resistance, vibration reduction, noise reduction and the like.
Through heating normal pressure infiltration or vacuum auxiliary infiltration and other processes, damping materials such as polyurethane and the like fully infiltrate into holes in the porous metal, and a local resonance phonon crystal structure can be formed. When bending vibration occurs, the energy consumption effects of tension, compression deformation and shear deformation exist in the structure at the same time. The metal framework enables local resonance units in the structure to be mutually coupled, has more intrinsic modes, and can act on elastic waves with different frequencies to enable the elastic waves to have broadband damping characteristics.
The particle damping vibration attenuation technology is to fill particle materials with a certain diameter to volume ratio in a cavity structure, and utilize collision impact among the particle materials to dissipate vibration energy.
The phonon crystal composite vibration damper for the base has the following manufacturing process:
step 1: and (5) preparing the assembly.
The section of the upper panel 1 is in an 'A' shape, the upper panel can be prepared by utilizing a metal plate welding mode according to the section size, the two ends of the upper panel 1 are welded and sealed through metal plates, and prefabricated metal particles 2 with a certain volume ratio are placed in advance before sealing; the cross section of the lower panel 5 is U-shaped, and can be prepared by utilizing a metal plate welding mode according to the cross section size;
the porous composite structure 3 is a porous aluminum metal structure with polyurethane damping materials filled in the pores. Wherein, the porous aluminum metal structure is industrially prepared by adopting mature technologies such as a casting method, a sintering method and the like. The polyurethane damping material fully permeates into holes in the porous aluminum metal structure through the processes of heating normal pressure permeation or vacuum auxiliary permeation and the like, so that the porous composite structure 3 is formed.
The metal particles 2 are prepared by machining;
the fastener 4 comprises a bolt, a flat washer, a spring washer, a nut.
After the preparation of the upper panel 1, the lower panel 5 and the porous composite structure 3 is completed, mounting holes (for the fasteners to pass through) are manufactured in a machining mode.
Step 2: and (5) installing the assembly.
After the preparation of each component is completed, the components are installed according to the structural form of the phonon crystal composite vibration reduction module. The upper panel 1, the porous composite structure 3 and the lower panel 5 are connected by fasteners 4.
According to the phonon crystal composite vibration damper for the base, the damping characteristic of the porous metal and damping material composite structure is adopted, meanwhile, the particle damping vibration damper technology is added, through structural design, the phonon crystal composite vibration damper for the base vibration damping can be formed, and compared with steel solid vibration-damping square steel used in traditional base vibration damping design, the vibration damping effect of the base can be improved, and the weight of the base can be reduced. Taking a phonon crystal composite vibration reduction module prepared from aluminum porous metal with the porosity of about 70% as an example, the weight of the phonon crystal composite vibration reduction module is only about 65% of that of steel solid vibration reduction square steel with the same size specification, and the vibration reduction effect of the base can be improved by more than 2 dB. In addition, the phonon crystal composite vibration damper for the base has the advantages of simple structure, easy realization and good vibration damping effect.
The invention further provides a preparation method of the phonon crystal composite vibration damper for the base.
In the preferred embodiment, the preparation method of the phonon crystal composite vibration damper for the base based on the above comprises the following steps:
respectively manufacturing an upper panel, a lower panel and a porous composite structure, wherein the upper panel is manufactured by welding a plurality of metal plates, metal particles are filled in a cavity of the upper panel between the upper panel and the lower panel, and damping materials are permeated into holes in the porous metal structure to form the porous composite structure by heating and normal-pressure permeation or vacuum auxiliary permeation;
processing mounting holes on the upper panel, the lower panel and the porous composite structure;
the fasteners are passed through the upper panel, the lower panel and the mounting holes in the porous composite structure, thereby connecting both the upper panel and the lower panel to the porous composite structure.
The invention further proposes a damping system.
In the preferred embodiment, referring to fig. 4 to 6, a damping system includes a photonic crystal composite damping device for a base, and further includes a base, wherein a web plate and a toggle plate of the base are welded with an upper panel 1 and a lower panel 5 of the photonic crystal composite damping device for a base, respectively, and the upper panel 1 and the lower panel 5 are made of the same material as the base. The specific structure and beneficial effects of the phonon crystal composite vibration damper for the base refer to the above embodiments, and are not described herein.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but is intended to cover all equivalent structures modifications, direct or indirect application in other related arts, which are included in the scope of the present invention.
Claims (10)
1. A phonon crystal composite vibration damper for a base is characterized by comprising an upper panel, a lower panel and a porous composite structure connected between the upper panel and the lower panel, wherein,
the porous composite structure is formed by compounding a porous metal material and a damping material, a cavity is formed in the upper panel, and metal particles are filled in the cavity.
2. The phononic crystal composite vibration damping device for a base according to claim 1, wherein the volume ratio of the metal particles in the cavity to the total volume of the cavity is 30-70%; the porosity of the porous metal material is 40% -90%.
3. The photonic crystal composite vibration-damping device for a susceptor according to claim 1, wherein a gap is provided between a bottom end surface of the upper panel and a top end surface of the lower panel.
4. The photonic crystal composite vibration-damping device for a susceptor of claim 1, wherein fasteners are provided on both the upper and lower panels to connect the same to the porous composite structure.
5. The phononic crystal composite vibration damping device for a base according to any one of claims 1-4, wherein the upper panel includes an upper frame and two support plates at the bottom of the upper frame, the upper frame is internally hollow to be filled with metal particles, and the two support plates and the bottom end surface of the upper frame form a groove structure to be contained outside the porous composite structure.
6. The photonic crystal composite vibration-damping device for a base according to claim 5, wherein the lower panel comprises two side plates and a bottom plate connected to the bottoms of the two side plates, the two side plates and the bottom plate together form a groove structure to be contained outside the porous composite structure, and a gap is provided between the top end surface of the side plate and the bottom end surface of the supporting plate.
7. The phononic crystal composite vibration damping device for a base according to claim 6, wherein the distance between the two support plates is equal to the distance between the two bottom plates; the thickness of the supporting plate and the side plate is not less than 3mm.
8. The phononic crystal composite vibration damping device for a base according to any one of claims 1 to 7, wherein the metal particles are steel alloy material and the damping material is polyurethane damping material.
9. A method for manufacturing a phononic crystal composite vibration damping device for a base according to any one of claims 1 to 8, characterized by comprising the steps of:
respectively manufacturing an upper panel, a lower panel and a porous composite structure, wherein the upper panel is manufactured by welding a plurality of metal plates, metal particles are filled in a cavity of the upper panel between the upper panel and the lower panel, and damping materials are permeated into holes in the porous metal structure to form the porous composite structure by heating and normal-pressure permeation or vacuum auxiliary permeation;
processing mounting holes on the upper panel, the lower panel and the porous composite structure;
the fasteners are passed through the upper panel, the lower panel and the mounting holes in the porous composite structure, thereby connecting both the upper panel and the lower panel to the porous composite structure.
10. A damping system, comprising the photonic crystal composite damping device for a base according to any one of claims 1 to 8, and further comprising a base, wherein a web plate and a toggle plate of the base are welded to an upper panel and a lower panel of the photonic crystal composite damping device for a base, respectively, and the upper panel and the lower panel are made of the same material as the base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211501994.6A CN116085414B (en) | 2022-11-28 | 2022-11-28 | Phonon crystal composite vibration damper for base, preparation method thereof and vibration damper system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211501994.6A CN116085414B (en) | 2022-11-28 | 2022-11-28 | Phonon crystal composite vibration damper for base, preparation method thereof and vibration damper system |
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| CN116085414B CN116085414B (en) | 2024-06-11 |
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| US20170307040A1 (en) * | 2011-08-17 | 2017-10-26 | Hrl Laboratories, Llc | Microlattice damping material and method for repeatable energy absorption |
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| CN214617628U (en) * | 2021-02-03 | 2021-11-05 | 厦门振为科技有限公司 | Unit equipment and particle damper with damping function |
| CN114352674A (en) * | 2021-02-08 | 2022-04-15 | 北京强度环境研究所 | Three-dimensional space lattice structure all-metal buffer |
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2022
- 2022-11-28 CN CN202211501994.6A patent/CN116085414B/en active Active
Patent Citations (9)
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|---|---|---|---|---|
| US20030098389A1 (en) * | 2000-04-12 | 2003-05-29 | Dussac Marc Francis Vincent | Damping structure and applications |
| CN101303056A (en) * | 2008-06-30 | 2008-11-12 | 哈尔滨工业大学 | Combined buffer |
| US20170307040A1 (en) * | 2011-08-17 | 2017-10-26 | Hrl Laboratories, Llc | Microlattice damping material and method for repeatable energy absorption |
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| CN116085414B (en) | 2024-06-11 |
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