CN111853145A - Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body - Google Patents
Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body Download PDFInfo
- Publication number
- CN111853145A CN111853145A CN202010707307.0A CN202010707307A CN111853145A CN 111853145 A CN111853145 A CN 111853145A CN 202010707307 A CN202010707307 A CN 202010707307A CN 111853145 A CN111853145 A CN 111853145A
- Authority
- CN
- China
- Prior art keywords
- layer
- lattice
- magnetoelectric
- rheological
- sandwich
- 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
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
- F16F15/023—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 using fluid means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention designs a lattice sandwich intelligent vibration reduction structure based on a magnetoelectric rheological body, which is used for vibration reduction and noise reduction of a thin-wall structure. The intelligent vibration reduction structure is applied to aircraft wall plates, aircraft fan blades and automobile bodies. Wherein the lattice structure layer is a pyramid structure, a honeycomb sandwich structure or a corrugated structure; the sensor adopts piezoelectric ceramics, a macro-fiber piezoelectric plate, a magnetostrictive material and an optical fiber and is used for sensing structural change; the actuator is an excitation coil and an electrode layer, and the intensity of an external magnetic field or electric field can be adjusted; the filler is a magnetic rheological body and an electrorheological body intelligent flexible material, and the rigidity of the filler is adjusted by adjusting the strength of an external magnetic field or an external electric field, so that the active vibration and noise reduction of the vibration reduction structure body is realized. The invention has the advantages of compact structure, good vibration damping effect, wide applicable frequency band range and low energy consumption.
Description
Technical Field
The invention relates to vibration and noise reduction applied to aircraft wallboards, aircraft fan blades, automobile bodies and the like, in particular to a lattice sandwich intelligent vibration reduction structure body based on a magnetoelectric rheological body.
Background
In the working process of parts such as an aircraft wall plate, an aircraft fan blade, an automobile body and the like, vibration is often caused by external disturbance, and under some special conditions, unnecessary vibration brings many troubles and even disastrous results to people; how to invent a lattice sandwich intelligent structure based on magnetoelectric rheological bodies, which can effectively inhibit vibration, is a problem to be solved urgently by people in the technical field at present.
Blade fracture failures within aircraft engines often occur under the influence of vibrations.
Aircraft panel structures have many advantages, such as reduced weight, but also have many disadvantages, such as low damping, susceptibility to vibration, and the like.
In the process of high-speed running of the automobile, the friction between the automobile body and air or the vibration transmitted from the interior of the engine can influence the automobile body, so that the riding comfort of passengers is reduced, and the oil consumption is increased.
Therefore, those skilled in the art are dedicated to developing a lattice sandwich intelligent structure based on magneto-rheological fluids, which has a reasonable design and strong practicability, and can effectively suppress the vibration of parts such as an aircraft wall panel structure, aircraft fan blades, an automobile body structure, and the like, and this is a technical problem to be solved urgently.
Disclosure of Invention
The invention aims to provide a lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological bodies, which is mainly based on a shearing working mode of magnetoelectric fluid, can change the rigidity of a material of the magnetoelectric rheological bodies or the current rheological bodies by adjusting an external magnetic field or electric field strength according to a set control method and the main vibration frequency of the lattice sandwich intelligent structure, and quickly and accurately automatically adjust the natural frequency of a vibration reducer, thereby achieving good vibration reduction effect in a wider frequency range and at a larger frequency change speed.
In order to achieve the purpose of the invention, the following technical scheme is adopted for helping:
the lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body is composed of an upper surface layer, a lower surface layer, an upper inner layer, a lower inner layer and a middle core body, wherein the upper surface layer and the lower surface layer are actuators, the upper inner layer and the lower inner layer are constraint structure layers, the middle core body is a lattice structure layer, a filler is filled in the lattice structure layer, an inductor is arranged on the upper actuator, and the actuator layer is electrically connected with a controller.
Preferably, the inductor is located at one side of the constraint structure layer, the actuator is located at two sides of the constraint structure layer, the lattice structure layer is located in the constraint structure layer, and the filler is located in the lattice structure layer.
Preferably, the constraint structure layer is an airplane wall plate, an airplane fan blade or an automobile body.
Preferably, the lattice structure layer adopts a pyramid structure layer, a honeycomb sandwich layer or a corrugated structure layer.
Preferably, the filling body is made of a magnetorheological fluid or an electrorheological fluid intelligent flexible material.
Preferably, the actuator layer employs an excitation coil or an electrode layer.
Preferably, the sensor is made of piezoelectric ceramics, a macro-fiber piezoelectric plate, a magnetostrictive material or an optical fiber.
Compared with the prior art, the invention has the following obvious and prominent substantial characteristics and remarkable technical progress:
1. the lattice sandwich intelligent vibration reduction structure has obvious vibration reduction effect, can adjust the magnetic field or electric field intensity of an actuator according to the main vibration frequency of the lattice sandwich intelligent structure, changes the natural frequency of a vibration reduction body, realizes vibration energy transfer between the vibration lattice sandwich intelligent structure and the vibration reduction body, ensures that the vibration reduction body fully absorbs the vibration energy of the target vibration lattice sandwich intelligent structure, and greatly reduces the vibration of the lattice sandwich intelligent structure;
2. the lattice sandwich intelligent vibration reduction structure has large vibration reduction frequency bandwidth, can adjust the magnetic field or electric field intensity of an actuator to change the rigidity of a magnetorheological body or an electrorheological body, and realizes that the vibration reduction body meets the requirement of vibration frequency matching of the lattice sandwich intelligent structure in a wider range;
3. The lattice sandwich intelligent vibration damping structure has less energy consumption, only needs to provide basic voltage and current for normal work of the vibration damping body, and does not need to provide energy to counteract vibration energy;
4. the lattice sandwich intelligent vibration reduction structure has compact structure and high response speed, and can realize continuous control;
5. the lattice sandwich intelligent vibration damping structure body is easy to modularize, and can be combined to use according to vibration damping requirements of different frequency bands.
Drawings
Fig. 1 is a structural schematic diagram of a lattice sandwich intelligent vibration damping structure based on a magnetoelectric rheological body.
The sensor comprises a 1-constraint structure layer, a 2-lattice structure layer, a 3-filling body, a 4-actuator, a 5-controller and a 6-inductor.
FIG. 2 is a schematic view of a lattice structure layer of the present invention having a pyramid structure.
Fig. 3 is a schematic diagram of the invention in which the lattice structure layers are honeycomb sandwich structures.
Fig. 4 is a schematic view showing the lattice structure of the present invention as a corrugated structure.
Detailed description of the preferred embodiments
The following is a preferred embodiment of the present invention, which is further described with reference to the accompanying drawings, but the practice of the present invention is not limited thereto.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
As shown in fig. 1, the invention provides a lattice sandwich intelligent structure based on a magnetoelectric current variant, which comprises a constraint structure 1, a lattice structure 2, a filler 3, an actuator 4, a controller 5 and an inductor 6.
The first embodiment is as follows:
in this embodiment, referring to fig. 1, a lattice sandwich intelligent vibration damping structure based on a magnetoelectric rheological body is composed of an upper surface layer, a lower surface layer, an upper inner layer, a lower inner layer and a central core body, wherein the upper surface layer and the lower surface layer are actuators 4, the upper inner layer and the lower inner layer are constraint structural layers 1, the central core body is a lattice structural layer 2, a filler 3 is filled in the lattice structural layer 2, an inductor 6 is arranged on the upper actuator 4, and the actuator layer 4 is electrically connected with a controller.
Example two:
this embodiment is substantially the same as the first embodiment, and is characterized in that:
in this embodiment, referring to fig. 1 to 4, the inductor 6 is located on one side of the constraint structure layer 1, the actuator 4 is located on both sides of the constraint structure layer, the lattice structure layer 2 is located in the constraint structure layer 1, and the filler 3 is located in the lattice structure layer 2. The constraint structure layer 1 is an aircraft wall plate, an aircraft fan blade or an automobile body. The lattice structure layer 2 is a pyramid, honeycomb sandwich or corrugated structure layer. The filling body 3 is a magnetic rheological body or an electrorheological body intelligent flexible material. The actuator layer 4 is an excitation coil or an electrode layer. The inductor 6 is made of piezoelectric ceramics, a macro-fiber piezoelectric plate, a magnetostrictive material or an optical fiber.
Example three:
this embodiment is substantially the same as the above embodiment, and is characterized in that:
in the present embodiment, referring to fig. 1 to 4, the filler 3 is a magnetorheological body, and the actuator 4 is an excitation coil. When the lattice structure 2 vibrates, the constraint structure 1 generates pressure on the inductor 6 instantly when vibrating, the inductor 6 deforms at the moment, the inductor 6 converts mechanical energy generated by deformation into electric energy to generate signals, the controller 5 collects the signals generated by the inductor 6, and after the collected signals are calculated, analyzed and processed, control signals are input to the actuator 4, so that the magnetic field intensity of the excitation coil is adjusted, the shear modulus of the magnetorheological body is changed along with the change of the magnetic field intensity, the inherent frequency of the lattice structure 2 is changed, and the functions of vibration reduction and noise reduction of the lattice sandwich intelligent structure are achieved. The above processes are repeated, the natural frequency of the intelligent structure can be changed by changing the magnetic field intensity, the frequency requirement of vibration and noise reduction of the lattice sandwich intelligent structure is maintained in real time, and the functional requirement of broadband vibration reduction of the lattice sandwich intelligent structure is met.
Example four:
this embodiment is substantially the same as the above embodiment, and is characterized in that:
In this embodiment, the filling body 3 is an electrorheological body, and the actuator 4 is an electrode layer. In case one, the actuator 4 obtains a control signal to adjust the electric field intensity of the electrode layer, and the shear modulus of the electrorheological body changes along with the change of the electric field intensity.
Example five:
this embodiment is substantially the same as the above embodiment, and is characterized in that:
in the present embodiment, the lattice structure 4 is a pyramid structure. Or the lattice structure 4 is a honeycomb sandwich structure. Or the lattice structure 4 is a corrugated structure. The lattice structure 4 can achieve the purpose of the invention by adopting different technical schemes.
The above-mentioned embodiments are only specific examples of the lattice sandwich intelligent structure based on the magneto-electric rheological fluid, and are intended to facilitate those skilled in the art to understand and apply the present invention within the technical scope of the present disclosure, but the scope of the present invention is not limited thereto, and equivalent structural changes or various substitutions without creative efforts based on the technical solution are within the scope of the present invention.
Claims (7)
1. The utility model provides a lattice core intelligence damping structure based on magnetoelectric rheological body, comprises upper and lower top layer, upper and lower inlayer and well core body, its characterized in that: the upper surface layer and the lower surface layer are actuators (4), the upper inner layer and the lower inner layer are constraint structural layers (1), the middle core body is a crystal lattice structural layer (2), filling bodies (3) are filled in the crystal lattice structural layer (2), an inductor (6) is arranged on the upper actuator (4), and the actuator layer (4) is electrically connected with a controller.
2. The lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body according to claim 1, wherein the inductor (6) is positioned on one side of the constraint structure layer (1), the actuator (4) is positioned on two sides of the constraint structure layer, the lattice structure layer (2) is positioned in the constraint structure layer (1), and the filler (3) is positioned in the lattice structure layer (2).
3. The lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body according to claim 1, wherein the constraint structure layer (1) is an aircraft wall plate, an aircraft fan blade or an automobile body.
4. The lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body according to claim 1, characterized in that the lattice structure layer (2) is a pyramid, a honeycomb sandwich or a corrugated structure layer.
5. The lattice sandwich intelligent vibration damping structure based on magneto-rheological fluids according to claim 1, characterized in that the filler (3) is a magneto-rheological fluid or an electro-rheological fluid intelligent flexible material.
6. The lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body is characterized in that the actuator layer (4) is an excitation coil or an electrode layer.
7. The lattice sandwich intelligent vibration damping structure based on the magnetoelectric rheological body is characterized in that the inductor (6) adopts piezoelectric ceramics, macro-fiber piezoelectric sheets, magnetostrictive materials or optical fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707307.0A CN111853145A (en) | 2020-07-22 | 2020-07-22 | Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010707307.0A CN111853145A (en) | 2020-07-22 | 2020-07-22 | Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111853145A true CN111853145A (en) | 2020-10-30 |
Family
ID=73001426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010707307.0A Pending CN111853145A (en) | 2020-07-22 | 2020-07-22 | Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111853145A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115473455A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Vibration damping and power generation dual-function device based on symmetrical multi-layer piezoelectric metamaterial |
| CN115479101A (en) * | 2022-10-27 | 2022-12-16 | 重庆大学 | Rigidity-adjustable variable-rigidity honeycomb structure |
| CN114776747B (en) * | 2022-03-15 | 2023-09-22 | 东北大学 | Composite hyperbolic corrugated sandwich structure for inhibiting vibration of lubricating oil tank of aero-engine and application thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540181A (en) * | 2003-10-29 | 2004-10-27 | 北京工业大学 | Bielectrode composite structural piece in use for current liquescent |
| CN1988068A (en) * | 2006-11-10 | 2007-06-27 | 南京航空航天大学 | Embedded magnetic rheological fluid intelligent material sandwich structure |
| CN101615468A (en) * | 2009-04-30 | 2009-12-30 | 重庆大学 | A kind of magnetic rheology elastic body composite construction of implanting magnet exciting coil |
| CN101832357A (en) * | 2010-05-24 | 2010-09-15 | 谭晓婧 | Single-side magneto rheological intelligent anti-vibration pad |
| CN106168265A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of energy based on piezoelectric effect is from supplying magneto-rheological vibration damper |
| CN109606532A (en) * | 2018-12-19 | 2019-04-12 | 哈尔滨工程大学 | Fluid drag-reduction noise reduction intelligent skin structure based on magnetorheological elastic material |
-
2020
- 2020-07-22 CN CN202010707307.0A patent/CN111853145A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540181A (en) * | 2003-10-29 | 2004-10-27 | 北京工业大学 | Bielectrode composite structural piece in use for current liquescent |
| CN1988068A (en) * | 2006-11-10 | 2007-06-27 | 南京航空航天大学 | Embedded magnetic rheological fluid intelligent material sandwich structure |
| CN101615468A (en) * | 2009-04-30 | 2009-12-30 | 重庆大学 | A kind of magnetic rheology elastic body composite construction of implanting magnet exciting coil |
| CN101832357A (en) * | 2010-05-24 | 2010-09-15 | 谭晓婧 | Single-side magneto rheological intelligent anti-vibration pad |
| CN106168265A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of energy based on piezoelectric effect is from supplying magneto-rheological vibration damper |
| CN109606532A (en) * | 2018-12-19 | 2019-04-12 | 哈尔滨工程大学 | Fluid drag-reduction noise reduction intelligent skin structure based on magnetorheological elastic material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776747B (en) * | 2022-03-15 | 2023-09-22 | 东北大学 | Composite hyperbolic corrugated sandwich structure for inhibiting vibration of lubricating oil tank of aero-engine and application thereof |
| CN115473455A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Vibration damping and power generation dual-function device based on symmetrical multi-layer piezoelectric metamaterial |
| CN115479101A (en) * | 2022-10-27 | 2022-12-16 | 重庆大学 | Rigidity-adjustable variable-rigidity honeycomb structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111853145A (en) | Lattice sandwich intelligent vibration reduction structure based on magnetoelectric rheological body | |
| CN102678806B (en) | A kind of method controlling the sound radiation of ship | |
| US4923057A (en) | Electrorheological fluid composite structures | |
| EP1785642B1 (en) | Modular connection for damping mechanical vibrations | |
| US8328129B2 (en) | Vibration-attenuating hard-mounted pylon | |
| Hendrowati et al. | Design, modeling and analysis of implementing a multilayer piezoelectric vibration energy harvesting mechanism in the vehicle suspension | |
| EP1735542B1 (en) | Pushing force deviating interface for damping mechanical vibrations | |
| US5068018A (en) | Electrophoretic fluid composite structure | |
| US6193032B1 (en) | Piezoceramic vibration control device and tuning control thereof | |
| CN105134866A (en) | Piezoelectric active vibration isolating mechanism and method for reducing inherent frequency of vibrating system | |
| US20140265731A1 (en) | Force generator for mounting on a structure | |
| EP2944844A2 (en) | Method and apparatus for reducing structural vibration and noise | |
| US20120292839A1 (en) | Variable Stiffness Liquid Inertia Vibration Eliminator | |
| CN110131352A (en) | A kind of active-passive integratedization vibrating controller based on piezoelectric actuating | |
| Scheidler | A review of noise and vibration control technologies for rotorcraft transmissions | |
| WO2004069655A1 (en) | Method for damping rear extension arm vibrations of rotorcrafts and rotorcraft with a rear extension arm vibration damping device | |
| CN103195863B (en) | Intelligent system for controlling damping of mechanical structure | |
| EP2608286B1 (en) | Ultrasonic actuator | |
| Wang et al. | Modeling and testing of the static deflections of circular piezoelectric unimorph actuators | |
| CN100572845C (en) | Piezoelectric liquid inertia vibration eliminator | |
| Hu et al. | Magnetorheological fluid and elastomeric lag damper for helicopter stability augmentation | |
| Samak et al. | Design of high-force high-displacement actuators for helicopter rotors | |
| Maier et al. | Active vibration isolation system for helicopter interior noise reduction | |
| Wickramasinghe et al. | Experimental evaluation of the smart spring impedance control approach for adaptive vibration suppression | |
| CN110259871A (en) | A kind of half active magnetorheological fluid consolidates hybrid isolator |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |