CN111306231A - Vibration isolation device based on recoverable large-deformation metamaterial structure - Google Patents
Vibration isolation device based on recoverable large-deformation metamaterial structure Download PDFInfo
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- CN111306231A CN111306231A CN202010101856.3A CN202010101856A CN111306231A CN 111306231 A CN111306231 A CN 111306231A CN 202010101856 A CN202010101856 A CN 202010101856A CN 111306231 A CN111306231 A CN 111306231A
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- bent rod
- deformation
- vibration isolation
- isolation device
- device based
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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
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
- F16F3/023—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction composed only of leaf springs
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a vibration isolation device based on a recoverable large-deformation metamaterial structure, which comprises m structural units with the same structure, wherein the m structural units are sequentially connected from top to bottom, and m is more than or equal to 1; each structural unit comprises a plurality of curved rods with arc-shaped structures, a bottom plate and a mounting clamp; a plurality of synapses are arranged on the bent outer side of the bent rod; one end of the bent rod is connected with the mounting clamp, and the other end of the bent rod is abutted against the bottom plate; synapses on the bent rod are sequentially arranged at one end close to the bottom plate; the invention realizes the effect of larger damping through the structural design, can be used in severe environments such as high temperature, high pressure, radioactivity and the like, and can be in service for a long time under extreme conditions.
Description
Technical Field
The invention relates to a vibration isolation device, in particular to a vibration isolation device based on a recoverable large-deformation metamaterial structure.
Background
The rubber material has the characteristics of superelasticity and viscoelasticity, can recover the initial configuration after generating large deformation, and is widely applied to living, medical treatment and health, transportation and logistics, industrial manufacturing, even aerospace and other high-precision scientific and technological equipment. By virtue of excellent mechanical property and damping effect, the rubber material becomes the first choice for sealing, vibration reduction and energy consumption. However, the rubber material has obvious aging phenomenon under the action of environment, which leads to obvious performance deterioration, and especially, the rubber material is difficult to meet the engineering requirements of long-term service under extreme conditions such as high temperature and the like. Compared with rubber materials, the metal material can bear higher temperature and external load impact, and the component has the characteristics of long storage and service life, difficult aging along with time and the like. Therefore, various parts made of metal materials can maintain stable mechanical properties in extreme working environments, meet special engineering requirements, and are particularly suitable for the fields of aviation, aerospace, navigation, chemical engineering and the like. However, at present, no metal material component can have the performance of a rubber material, and no device can be used for a long time in a severe environment on the basis of good damping characteristics.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the vibration isolation device which has good damping characteristic and can be used for a long time in a severe environment and is based on the recoverable large-deformation metamaterial structure.
The technical scheme adopted by the invention is as follows: a vibration isolation device based on a recoverable large-deformation metamaterial structure comprises m structural units which are sequentially connected from top to bottom and have the same structure, wherein m is more than or equal to 1; each structural unit comprises a plurality of curved rods with arc-shaped structures, a bottom plate and a mounting clamp; a plurality of synapses are arranged on the bent outer side of the bent rod; one end of the bent rod is connected with the mounting clamp, and the other end of the bent rod is abutted against the bottom plate; synapses on the bent rod are sequentially arranged at one end close to the bottom plate.
Furthermore, synapses on the bent rods are of semicircular structures, and the radiuses of the synapses decrease from the side close to the bottom plate to the side close to the mounting fixture in sequence.
Furthermore, the connecting clamp is of a polygonal structure, and the number n of the edges of the connecting clamp is matched with the number of the bent rods; each bent rod corresponds to one edge of the connecting clamp.
Furthermore, a groove is formed in the corresponding position of each edge of the connecting clamp, and a clamping block matched with the groove is arranged at the connecting end of the bent rod.
Furthermore, the clamping block is arranged on the outer side of the arc of the bent rod.
Further, the bottom plate is of a circular structure.
The invention has the beneficial effects that:
(1) according to the invention, through bending and sliding of the bent rod, the structure can generate larger deformation under a compression load and can spontaneously return to an initial configuration after being unloaded;
(2) the invention consumes the external loading mechanical energy through the sliding friction between the synapses on the bent rod with the synapses and the bottom plate, thereby achieving the effect of damping energy consumption;
(3) the invention realizes the effect of larger damping through the structural design, can be used in severe environments such as high temperature, high pressure, radioactivity and the like, and can be in service for a long time under extreme conditions.
Drawings
Fig. 1 is a schematic view of a curved bar structure of the present invention, wherein a is a front view, b is a left view, c is a top view, and d is an axonometric view.
Fig. 2 is a schematic structural view of the bottom plate of the present invention, wherein a is a front view, b is a left view, c is a top view, and d is an axonometric view.
Fig. 3 is a schematic structural view of the installation jig of the present invention, wherein a is a front view, b is a left view, c is a top view, and d is an isometric view.
Fig. 4 is a schematic view of the combined structure of the bending rod and the mounting clamp in the invention, wherein a is a front view, b is a left view, c is a top view, and d is an axonometric view.
Fig. 5 is a front view of the device of the present invention.
Fig. 6 is a schematic perspective view of the device of the present invention.
In the figure, 1-bent rod, 2-bottom plate and 3-mounting clamp.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
As shown in FIGS. 1 to 6, the vibration isolation device based on the recoverable large-deformation metamaterial structure comprises m structural units with the same structure, wherein the m structural units are sequentially connected from top to bottom, and m is more than or equal to 1; each structural unit comprises a plurality of curved rods 1 with arc-shaped structures, a bottom plate 2 and a mounting clamp 3; a plurality of synapses are arranged on the bent outer side of the bent rod 1; one end of the bent rod 1 is connected with the mounting clamp 3, and the other end of the bent rod abuts against the bottom plate 2; synapses on the bent rod 1 are arranged in sequence near one end of the bottom plate 2.
Synapses on the bent rod 1 are in a semicircular structure, and the radius of the synapses decreases from the side close to the bottom plate 2 to the side close to the mounting fixture 3. The connecting clamp 3 is of a polygonal structure, and the number n of the edges of the connecting clamp is matched with the number of the bent rods 1; each bent rod 1 corresponds to one edge of the connecting clamp 3. The corresponding position of every limit of joining fixture 3 is provided with the recess, and knee 1 is provided with the fixture block with recess matched with rather than the link. The fixture block is arranged on the outer side of the arc of the bent rod 1. The base plate 2 is of a circular configuration.
According to the invention, the rigidity of the structure is reduced through bending and sliding instability of the synaptic bent rod under the action of load, the structure can generate larger deformation, the integrated shape can recover after unloading, and the vibration isolation and energy consumption of the structure are realized through the friction behavior between the synaptic bent rod 1 and the bottom plate 2 in the deformation process. Through the contact action of the abrupt contacts in the band-synapse bent rod 1 in the compression process with the bottom plate 2 in sequence, the structural rigidity is in step-type ascending along with the increase of the compression amount, and the self-protection effect is achieved along with the promotion of the damping energy consumption effect.
The energy consumption optimization design can be carried out by designing the geometric parameters and the synapse size of the synapse bent rods 1 according to service conditions, the number of the synapse bent rods 1 is increased in a parallel connection mode, and loading is realized through the mounting clamp 3. The influence of the stick-slip phenomenon on the deformation of the structure can be reduced, and the deformation process and the stability of energy consumption behaviors of the structure are improved. And the structure has better durability in severe environments such as high temperature, high humidity, radioactivity and the like by selecting proper metal materials, and the limitation that the traditional energy consumption material is difficult to serve for a long time under extreme conditions is overcome.
The invention meets the requirement of the vibration isolation device through the structural design, so that the structural rigidity of the vibration isolation device is controllable, namely, the vibration isolation device ascends in a step mode along with the increase of the compression amount, the optimal design of energy dissipation can be better carried out according to the service condition along with the improvement of the damping energy consumption effect, and the structure has a self-protection mechanism. By controlling the combination parameters of the bent rod with synapse 1 and the arrangement mode of synapses in a segmented manner, the bent rod with synapses 1 generates bending deformation and transverse sliding under the action of load, and the structural rigidity is reduced. Meanwhile, the metal material is guaranteed to work in an elastic range under external load all the time through design, and the capability that the component can recover the initial shape under multiple loading and unloading is achieved. In the structural deformation process, the synapse with the synapse bent rod 1 is rubbed with the base plate 2 to play a role in vibration isolation and energy consumption, and the rubbing behavior can be adjusted to carry out optimization design. The number, the position and the shape of synapses in the bent rod 1 are adjusted, so that the synapses of the bent rod 1 with the synapses are sequentially contacted with the bottom plate 2 from the outer end part in the compression process, and the variable damping and self-protection effects are realized along with the stepped rise of the structural rigidity.
The mounting fixture 3 can be prepared by a 3D printing mode, and the external loading is realized by connecting the mounting fixture 3 to the belt synaptic bent rod 1 in a geometric constraint mode. When the device is used, vibration or compression load is applied to the upper end of the bent rod 1, and synapses in the bent rod 1 in the structure motion process rub with the bottom plate 2 to realize energy dissipation.
Claims (6)
1. The vibration isolation device based on the recoverable large-deformation metamaterial structure is characterized by comprising m structural units which are sequentially connected from top to bottom and have the same structure, wherein m is more than or equal to 1; each structural unit comprises a plurality of curved rods (1) with arc-shaped structures, a bottom plate (2) and a mounting clamp (3); a plurality of synapses are arranged on the bent outer side of the bent rod (1); one end of the bent rod (1) is connected with the mounting clamp (3), and the other end of the bent rod is propped against the bottom plate (2); synapses on the bent rod (1) are sequentially arranged at one end close to the bottom plate (2).
2. The vibration isolation device based on the recoverable large-deformation metamaterial structure according to claim 1, wherein synapses on the bent rods (1) are in a semicircular structure, and the radius of the synapses decreases from the side close to the base plate (2) to the side close to the mounting fixture (3).
3. The vibration isolation device based on the recoverable large-deformation metamaterial structure according to claim 1, wherein the connecting clamp (3) is of a polygonal structure, and the number of sides n of the connecting clamp is matched with the number of the bent rods (1); each bent rod (1) is correspondingly connected with one edge of the clamp (3).
4. The vibration isolation device based on the recoverable large-deformation metamaterial structure according to claim 3, wherein a groove is formed in a position corresponding to each edge of the connecting clamp (3), and a clamping block matched with the groove is arranged at the connecting end of the bent rod (1).
5. The vibration isolation device based on the recoverable large-deformation metamaterial structure according to claim 4, wherein the fixture blocks are arranged outside the arc of the bent rod (1).
6. The vibration isolation device based on the recoverable large-deformation metamaterial structure according to claim 1, wherein the base plate (2) is of a circular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101856.3A CN111306231A (en) | 2020-02-19 | 2020-02-19 | Vibration isolation device based on recoverable large-deformation metamaterial structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101856.3A CN111306231A (en) | 2020-02-19 | 2020-02-19 | Vibration isolation device based on recoverable large-deformation metamaterial structure |
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| CN111306231A true CN111306231A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010101856.3A Pending CN111306231A (en) | 2020-02-19 | 2020-02-19 | Vibration isolation device based on recoverable large-deformation metamaterial structure |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0139323A1 (en) * | 1983-09-12 | 1985-05-02 | Koninklijke Philips Electronics N.V. | Electron tube |
| EP0308784A2 (en) * | 1987-09-25 | 1989-03-29 | Siemens Aktiengesellschaft | Clamping jaw for mounting oscillating sliding contact bearings |
| WO2001081785A1 (en) * | 2000-04-26 | 2001-11-01 | Brigham Young University | Compliant, ortho-planar, linear motion spring |
| CN101688578A (en) * | 2007-04-18 | 2010-03-31 | 内奥科尼克斯公司 | The method and system that is used for batch manufacturing of spring elements |
| CN106992376A (en) * | 2017-04-10 | 2017-07-28 | 胡世勇 | The stamping terminal of high current and its processing technology of a kind of multi-directionally plug |
| CN108916637A (en) * | 2018-06-27 | 2018-11-30 | 西南科技大学 | A kind of friction surface and its design method influencing frictional force |
| KR20190122092A (en) * | 2018-04-19 | 2019-10-29 | 현대자동차주식회사 | Air pocket type spacer |
-
2020
- 2020-02-19 CN CN202010101856.3A patent/CN111306231A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0139323A1 (en) * | 1983-09-12 | 1985-05-02 | Koninklijke Philips Electronics N.V. | Electron tube |
| EP0308784A2 (en) * | 1987-09-25 | 1989-03-29 | Siemens Aktiengesellschaft | Clamping jaw for mounting oscillating sliding contact bearings |
| WO2001081785A1 (en) * | 2000-04-26 | 2001-11-01 | Brigham Young University | Compliant, ortho-planar, linear motion spring |
| CN101688578A (en) * | 2007-04-18 | 2010-03-31 | 内奥科尼克斯公司 | The method and system that is used for batch manufacturing of spring elements |
| CN106992376A (en) * | 2017-04-10 | 2017-07-28 | 胡世勇 | The stamping terminal of high current and its processing technology of a kind of multi-directionally plug |
| KR20190122092A (en) * | 2018-04-19 | 2019-10-29 | 현대자동차주식회사 | Air pocket type spacer |
| CN108916637A (en) * | 2018-06-27 | 2018-11-30 | 西南科技大学 | A kind of friction surface and its design method influencing frictional force |
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Application publication date: 20200619 |
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