CN106284725B - A kind of damping-constraining disk plate with slots waveguide absorber and its design method - Google Patents
A kind of damping-constraining disk plate with slots waveguide absorber and its design method Download PDFInfo
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- CN106284725B CN106284725B CN201610656148.XA CN201610656148A CN106284725B CN 106284725 B CN106284725 B CN 106284725B CN 201610656148 A CN201610656148 A CN 201610656148A CN 106284725 B CN106284725 B CN 106284725B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The present invention proposes that a kind of damping-constraining disk plate with slots waveguide absorber structure and its design method, damping-constraining disk plate with slots waveguide absorber are made of energy waveguide role and damping-constraining disk plate with slots；Energy waveguide role one end and damping-constraining disk plate with slots center hole secure fit；Damping-constraining disk plate with slots is divided into three layers, and along the direction for being gradually distance from vibration source, first layer is separation layer, and the second layer is viscoelastic material damping layer, and third layer is restraint layer；Circumferential in damping-constraining disk plate with slots, damping-constraining disk plate with slots is made of several non-uniform beams, is provided with slot between adjacent non-uniform beam.For the natural vibration characteristic of vibration source, analysis obtains the primary frequency range of absorbing, using the energy reflectivity of the energy absorbing device of energy consumer and export bar as target parameter, structure proposed according to the present invention, reasonable bump leveller parameter is designed, it is final to realize the level of vibration for reducing vibration source to the maximum extent in absorbing frequency range.
Description
Technical field
The present invention relates to structural vibration reduction field, specially a kind of damping-constraining disk plate with slots waveguide absorber and its design side
Method.
Background technique
Dynamic vibration absorber is a kind of a kind of structure that object vibrational energy is absorbed using resonance principle, and simplest power is inhaled
Vibration device is quality-spring resonance system, i.e. oscillator bump leveller, it, which generates reaction force in resonance, can make the vibration water of vibration source
Pancake is low.But oscillator bump leveller kinetic parameter is immutable, absorbing frequency band is narrow, so beam-type dynamic vibration absorber is proposed later,
Mainly there are uniform beam, non-uniform beam and annular girder, can not only increase absorbing frequency range, basic parameter is also adjustable.
In order to further increase the absorbing efficiency of bump leveller, German scholar Ungar Eric E. and Kurzwell
Leonard G proposes the waveguide absorber based on viscoelastic material high-damping Energy Dissipation Mechanism and dynamic absorber principle, it has
It is same as the distinguishing feature of dynamic vibration absorber: there is good shock attenuation result in wider frequency range, meanwhile, installation site is general
At the big displacement response point of vibration source, therefore, construction is simple, flexibly.
Waveguide absorber is generally made of energy waveguide role and energy consumer two parts, and beam class energy consumer is initial research pair
As, if the energy consumer in waveguide absorber is the disk for being provided with narrow slot, disk plate with slots is considered as several beam class consumptions
The parallel connection of energy device, can be improved the power consumption rate of energy consumer.But current waveguide absorber is inhaled there are still absorbing frequency range deficiency
The problem of low efficiency of shaking.
Summary of the invention
In order to expeditiously reduce the level of vibration of vibrating object, increase absorbing frequency range, the invention proposes one kind
Damping-constraining disk plate with slots waveguide absorber structure and its design method, for the natural vibration characteristic of vibration source, analysis is inhaled
The primary frequency range of vibration, using the energy reflectivity of the energy absorbing device of energy consumer and export bar as target parameter, according to this hair
The structure of bright proposition designs reasonable bump leveller parameter, and final realize reduces vibration source in absorbing frequency range to the maximum extent
Level of vibration.
The technical solution of the present invention is as follows:
A kind of damping-constraining disk plate with slots waveguide absorber, it is characterised in that: by energy waveguide role and damping-constraining
Disk plate with slots composition；
Described energy waveguide role one end is for being fixed on vibrating object outer surface, in the other end and damping-constraining disk plate with slots
Heart circular hole secure fit；
The damping-constraining disk plate with slots is divided into three layers, and along the direction for being gradually distance from vibration source, first layer is separation layer, and second
Layer is viscoelastic material damping layer, and third layer is restraint layer；It is circumferential in damping-constraining disk plate with slots, damping-constraining disk plate with slots by
Several non-uniform beams form, and are provided with slot between adjacent non-uniform beam.
Further preferred embodiment, a kind of damping-constraining disk plate with slots waveguide absorber, it is characterised in that: separation layer
It is connect between damping layer, between damping layer and restraint layer by adhesive means.
Further preferred embodiment, a kind of damping-constraining disk plate with slots waveguide absorber, it is characterised in that: separation layer
With restraint layer using the metal material that density is small, elasticity modulus is big.
Further preferred embodiment, a kind of damping-constraining disk plate with slots waveguide absorber, it is characterised in that: separation layer
Aluminum material is used with restraint layer.
A kind of design method of the damping-constraining disk plate with slots waveguide absorber, it is characterised in that: the following steps are included:
Step 1: analyzing the natural vibration characteristic of vibrating object, determine the frequency range for needing vibration damping；
Step 2: establishing damping-constraining disk plate with slots simulation model, the damping loss factor with damping-constraining disk plate with slots is
Target parameter is that optimization becomes with the thickness ratio between separation layer and damping layer and the thickness ratio between damping layer and restraint layer
Amount, by simulation optimization operation, acquisition make the maximum separation layer of the damping loss factor of damping-constraining disk plate with slots, damping layer and
Optimum thickness ratio between restraint layer；
Step 3: the damping-constraining disk plate with slots structural parameters obtained according to step 2 establish damping-constraining disk plate with slots wave
Bump leveller simulation model is led, using the energy absorbing device of the energy reflectivity of energy waveguide role and damping-constraining disk plate with slots as target
Parameter, with energy waveguide role diameter and length, damping-constraining disk plate with slots thickness, diameter, fluting number and fluting central angle
For optimized variable, by simulation optimization operation, acquisition keeps energy waveguide role energy reflectivity minimum, and damping-constraining disk plate with slots
Energy waveguide role diameter and length when energy absorbing device maximum, damping-constraining disk plate with slots thickness, diameter, fluting number and
Fluting central angle.
Beneficial effect
The invention proposes a kind of novel waveguide absorber structures and its design method, with this configuration, vibrating object
Vibrational energy damping-constraining disk plate with slots is passed to by energy waveguide role, using damping-constraining disk plate with slots it is non-linear,
The characteristics such as high-damping can play good effectiveness in vibration suppression.And it is directed to specific vibration environment, pass through consolidating for analysis vibrating object
There is vibration characteristics, determines the frequency range of vibration damping, the design considerations as bump leveller；Then bump leveller geometric parameter is determined most
The figure of merit so that bump leveller system is in resonance state, while meeting the energy reflection of energy waveguide role in absorbing frequency range
The condition that rate is sufficiently small, damping-constraining disk plate with slots energy absorbing device is as big as possible.The relatively existing waveguide absorbing of the present invention
For device, it can increase absorbing frequency range, greatly improve absorbing efficiency, to realize highly effective in wider middle low-frequency range
The level of vibration of ground reduction vibration source.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is novel damping-constraining disk plate with slots waveguide absorber structural schematic diagram；
Fig. 2 is the top view of damping-constraining disk plate with slots；
Fig. 3 is bump leveller and slab construction connection schematic diagram；
Fig. 4 is the vibratory response for installing the forward and backward plate of damping-constraining disk plate with slots bump leveller.
Wherein: 1- metal restriction layer 2- damping layer 3- separation layer 4- energy waveguide role 5- sulculus 6- non-uniform beam 7-
Slab construction.
Specific embodiment
The embodiment of the present invention is described below in detail, the embodiment is exemplary, it is intended to it is used to explain the present invention, and
It is not considered as limiting the invention.
The purpose of the invention is to the level of vibration that further high efficiency reduces vibrating object, increase absorbing frequency model
It encloses, a kind of damping-constraining disk plate with slots waveguide absorber structure and its design method is proposed thus, for the intrinsic vibration of vibration source
Dynamic characteristic, analysis obtain the primary frequency range of absorbing, with the reflection of the energy of the energy absorbing device of energy consumer and energy waveguide role
Rate is target parameter, structure proposed according to the present invention, designs reasonable bump leveller parameter, final to realize in absorbing frequency range
The level of vibration of vibration source is inside reduced to the maximum extent.
Wherein damping-constraining disk plate with slots waveguide absorber is made of energy waveguide role and damping-constraining disk plate with slots；
Described energy waveguide role one end is for being fixed on vibrating object outer surface, in the other end and damping-constraining disk plate with slots
Heart circular hole secure fit；
The damping-constraining disk plate with slots is divided into three layers, and along the direction for being gradually distance from vibration source, first layer is separation layer, and second
Layer is viscoelastic material damping layer, and third layer is restraint layer；It is circumferential in damping-constraining disk plate with slots, damping-constraining disk plate with slots by
Several non-uniform beams form, and are provided with slot between adjacent non-uniform beam.
It is connected between separation layer and damping layer, between damping layer and restraint layer by adhesive means.
Separation layer and restraint layer are using the metal material that density is small, elasticity modulus is big, such as aluminum material.
Based on above-mentioned damping-constraining disk plate with slots waveguide absorber structure, design method the following steps are included:
Step 1: analyzing the natural vibration characteristic of vibrating object, determine the frequency range for needing vibration damping；
Step 2: establishing damping-constraining disk plate with slots simulation model, the damping loss factor with damping-constraining disk plate with slots is
Target parameter is that optimization becomes with the thickness ratio between separation layer and damping layer and the thickness ratio between damping layer and restraint layer
Amount, by simulation optimization operation, acquisition make the maximum separation layer of the damping loss factor of damping-constraining disk plate with slots, damping layer and
Optimum thickness ratio between restraint layer；
Step 3: the damping-constraining disk plate with slots structural parameters obtained according to step 2 establish damping-constraining disk plate with slots wave
Bump leveller simulation model is led, using the energy absorbing device of the energy reflectivity of energy waveguide role and damping-constraining disk plate with slots as target
Parameter, with energy waveguide role diameter and length, damping-constraining disk plate with slots thickness, diameter, fluting number and fluting central angle
For optimized variable, by simulation optimization operation, acquisition keeps energy waveguide role energy reflectivity minimum, and damping-constraining disk plate with slots
Energy waveguide role diameter and length when energy absorbing device maximum, damping-constraining disk plate with slots thickness, diameter, fluting number and
Fluting central angle.
Based on the above principles, specific embodiment is described below:
The present embodiment is by taking the vibration for reducing one flat plate as an example, experiment measurement installation damping-constraining disk plate with slots bump leveller
Forward and backward plate vibration is horizontal.Wherein plate uses aluminum material.Energisation mode is point power excitation, and normal direction is applied downwardly to plate
On.Connection between bump leveller and plate is as shown in Figure 3.
Fig. 4 show the forward and backward plate vibration AL Acceleration Level of installation damping-constraining disk plate with slots that simulation calculation obtains, figure
Middle "-" indicates vibratory response before absorbing, and " -- " indicates vibratory response after absorbing, and " --- " indicates total vibration level before absorbing,
" --- " indicates total vibration level after absorbing.As can be seen that bump leveller structure of the present invention can be in wider middle low frequency
(100Hz-2kHz) is effectively reduced the vibratory response of vibrating object within the scope of rate, can especially reduce the intrinsic frequency of vibrating object
Vibration peak near rate, the global vibration grade in entirely analysis frequency range can reduce 15dB.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art are not departing from the principle of the present invention and objective
In the case where can make changes, modifications, alterations, and variations to the above described embodiments within the scope of the invention.
Claims (4)
1. a kind of design method of damping-constraining disk plate with slots waveguide absorber, it is characterised in that: the damping-constraining fluting circle
Disk waveguide absorber is made of energy waveguide role and damping-constraining disk plate with slots；Described energy waveguide role one end is for being fixed on vibration
Animal external surface, the other end and damping-constraining disk plate with slots center hole secure fit；The damping-constraining disk plate with slots point
It is three layers, along the direction for being gradually distance from vibration source, first layer is separation layer, and the second layer is viscoelastic material damping layer, and third layer is
Restraint layer；Circumferential in damping-constraining disk plate with slots, damping-constraining disk plate with slots is made of several non-uniform beams, adjacent variable cross-section
Slot is provided between beam；
The design method the following steps are included:
Step 1: analyzing the natural vibration characteristic of vibrating object, determine the frequency range for needing vibration damping；
Step 2: damping-constraining disk plate with slots simulation model is established, using the damping loss factor of damping-constraining disk plate with slots as target
Parameter leads to using the thickness ratio between separation layer and damping layer and the thickness ratio between damping layer and restraint layer as optimized variable
Simulation optimization operation is crossed, acquisition makes the maximum separation layer of the damping loss factor of damping-constraining disk plate with slots, damping layer and constraint
Optimum thickness ratio between layer；
Step 3: the damping-constraining disk plate with slots structural parameters obtained according to step 2 establish damping-constraining disk plate with slots waveguide suction
Shake device simulation model, joins by target of the energy absorbing device of the energy reflectivity of energy waveguide role and damping-constraining disk plate with slots
Amount, with energy waveguide role diameter and length, damping-constraining disk plate with slots thickness, diameter, fluting number and fluting central angle are
Optimized variable, by simulation optimization operation, acquisition keeps energy waveguide role energy reflectivity minimum, and damping-constraining disk plate with slots energy
Energy waveguide role diameter and length, damping-constraining disk plate with slots thickness, diameter, fluting when measuring dissipative shock wave maximum and are opened number
Slot central angle.
2. a kind of design method of damping-constraining disk plate with slots waveguide absorber according to claim 1, it is characterised in that: every
It is connected between absciss layer and damping layer, between damping layer and restraint layer by adhesive means.
3. a kind of design method of damping-constraining disk plate with slots waveguide absorber according to claim 2, it is characterised in that: every
Absciss layer and restraint layer are using the metal material that density is small, elasticity modulus is big.
4. a kind of design method of damping-constraining disk plate with slots waveguide absorber according to claim 2, it is characterised in that: every
Absciss layer and restraint layer use aluminum material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610656148.XA CN106284725B (en) | 2016-08-11 | 2016-08-11 | A kind of damping-constraining disk plate with slots waveguide absorber and its design method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610656148.XA CN106284725B (en) | 2016-08-11 | 2016-08-11 | A kind of damping-constraining disk plate with slots waveguide absorber and its design method |
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| CN106284725A CN106284725A (en) | 2017-01-04 |
| CN106284725B true CN106284725B (en) | 2019-03-29 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110230657A (en) * | 2019-07-15 | 2019-09-13 | 苏州英磁新能源科技有限公司 | A kind of more damping layer locally resonant subelements and its application method |
| CN113513101B (en) * | 2021-07-22 | 2023-01-10 | 同济大学 | Tuning vibration absorption device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443564A2 (en) * | 1990-02-22 | 1991-08-28 | Buchtal Gesellschaft mit beschränkter Haftung | Absorber for electromagnetic waves |
| CN201306407Y (en) * | 2008-09-24 | 2009-09-09 | 上海众力汽车部件有限公司 | Dynamic vibration absorber |
| CN203395066U (en) * | 2013-07-02 | 2014-01-15 | 上海通用汽车有限公司 | Vibration absorber |
-
2016
- 2016-08-11 CN CN201610656148.XA patent/CN106284725B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0443564A2 (en) * | 1990-02-22 | 1991-08-28 | Buchtal Gesellschaft mit beschränkter Haftung | Absorber for electromagnetic waves |
| CN201306407Y (en) * | 2008-09-24 | 2009-09-09 | 上海众力汽车部件有限公司 | Dynamic vibration absorber |
| CN203395066U (en) * | 2013-07-02 | 2014-01-15 | 上海通用汽车有限公司 | Vibration absorber |
Non-Patent Citations (2)
| Title |
|---|
| 一种新型波导吸振器—约束阻尼梁;李威;《噪声与振动控制》;20000430;第24-27页，图1-5 |
| 开槽圆盘波导吸振器耗能及其导出杆研究;冯丹凤;《华中理工大学学报》;20000131;第7-10页，图1-11 |
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Granted publication date: 20190329 |