CN1153703A - Patterned noise damping composite - Google Patents
Patterned noise damping composite Download PDFInfo
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- CN1153703A CN1153703A CN 96122762 CN96122762A CN1153703A CN 1153703 A CN1153703 A CN 1153703A CN 96122762 CN96122762 CN 96122762 CN 96122762 A CN96122762 A CN 96122762A CN 1153703 A CN1153703 A CN 1153703A
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Abstract
A noise damping composite includes a viscoelastic layer disposed between a pair of constraining metal layers, the viscoelastic layer including a pattern of adjacent stripes of different viscoelastic materials. Stripes of two or three different materials are disclosed. The viscoelastic layer can be applied in either liquid or solid form. In the former, it may be provided with mica platelets distributed throughout the layer.
Description
The present invention relates to vibration damping structure, it is used to reduce vibration, the vibration that particularly produces noise.The present invention is applied to the vibration damping of vibration system especially to suppress noise.
In some system, vibration can produce harmful noise.For example, bear in the system of friction and/or vibration at common break such as disc brake, vehicle body plate, packing of product plate and other, friction or vibration force can cause shriek or other noise.In order to suppress this noise, people once attempted on vibration system fixedly vibration damping structure, comprised viscoelastic material, absorbed or reduce to produce the vibration of noise.
As everybody knows, this is called its " coefficient of losses " ability that viscoelastic material reduces to vibrate, and is the function of temperature and frequency.Because the operating temperature that wide range can bear in many systems in proper functioning, thereby coefficient of losses can have sizable variation in operating temperature range.Therefore, though the vibration that a specific viscoelastic material can reduce to produce noise effectively in a certain temperature of this scope,, then may be relatively not too effective in certain its temperature of this scope.Similar ground, a specific viscoelastic material may reduce some vibration frequency preferably, and quite different to other vibration frequency.
Can reduce to produce the temperature range of the vibration of noise effectively in order to widen a specific vibration damping structure, the known a kind of layering of the different viscoelastic materials in the different layers or the stacked vibration damping structure of utilizing of people, different types of viscoelastic material is used to provide the peak loss coefficient when different temperatures.For example this layout is disclosed in U. S. Patent the 5th, 099, in No. 962.But it but is difficulty and expensive that this multi-layer structure manufactures.
A basic purpose of the present invention provides a kind of improved vibration damping structure, and it can avoid many defectives of the vibration damping structure of prior art, and other structure and operational advantages is provided simultaneously.
A free-revving engine of the present invention is that a vibration damping composite material is set, and it can provide higher coefficient of losses adding on the wide temperature range.
Relevant with above-mentioned feature, another object of the present invention provides the aforementioned the sort of vibration damping composite material that utilizes not stratified multiple viscoelastic material.
Another object of the present invention provides a kind of vibration damping structure that strengthens the coefficient of losses characteristic of viscoelastic material.
Another object of the present invention provides a kind of method that forms aforementioned vibration damping composite material.
Some purpose in the above-mentioned purpose realizes that by a kind of vibration damping composite material is provided this vibration damping composite material comprises a substrate and is arranged on suprabasil single viscoelasticity vibration damping layer; This vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
Other purpose of the present invention realizes by a kind of vibration damping composite material is provided, this vibration damping composite material comprises a pair of limiting layer and the single viscoelasticity vibration damping layer that is located between the limiting layer, and this vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
Other purpose of the present invention realizes that by a kind of vibration damping structure is provided this vibration damping structure comprises thin one by one, flat substantially viscoelastic material body and a plurality of little sheet mica that distributes on above-mentioned body.
Other purpose of the present invention is by providing a kind of method that forms vibration damping composite material to realize, this method may further comprise the steps: a substrate is set, single viscoelasticity vibration damping layer is set in substrate, and this vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
The present invention includes the combination of some novel feature and part, they will describe in detail hereinafter, in the accompanying drawings expression, particularly in claims, illustrate, obviously, can do various changes and not exceed scope of the present invention, also harmless any advantage of the present invention details.
For the ease of understanding the present invention, described preferred embodiment of the present invention in the accompanying drawings, the contrast accompanying drawing is further illustrated the present invention, structure of the present invention and operation and many advantages thereof.
Fig. 1 is according to first embodiment of the invention, reflects the partial cross-sectional view of the vibration damping composite material of its feature;
Fig. 2 is along the 2-2 line of Fig. 1, the top plan view of the viscoelastic layer of the composite material of Fig. 1;
Fig. 3 is the view that is similar to Fig. 2, represents another embodiment of composite material of the present invention;
Fig. 4 is the view that is similar to Fig. 2, and the viscoelasticity zone is along the vertical and not band of horizontal expansion of substrate;
Fig. 5 is the view that is similar to Fig. 4, and wherein the viscoelasticity zone is oblique;
Fig. 6 is the view that is similar to Fig. 1, the expression another embodiment of the present invention;
Fig. 7 is along the 7-7 line of Fig. 6, the top plan view of the viscoelastic layer of the composite material of Fig. 6;
Fig. 8 is similar to Fig. 1, the expression another embodiment of the present invention;
The graphical representation of Fig. 9 is for the multiple different vibration mode of the composite material with prior art viscoelastic material, the relation of coefficient of losses and temperature;
Figure 10 is the plotted curve that is similar to Fig. 9, and expression has the situation of the composite material of another kind of prior art viscoelastic material;
Figure 11 is the plotted curve that is similar to Fig. 9, and expression has the viscoelastic material of Fig. 9 and 10, according to the situation of composite material of the present invention;
Figure 12 is the plotted curve that is similar to Figure 11, and expression is according to the situation of another kind of composite material of the present invention;
Figure 13 is the plotted curve that is similar to Figure 11, and expression has three kinds of viscoelastic materials, according to the situation of another kind of composite material of the present invention;
Figure 14 is the plotted curve that is similar to Fig. 9, and viscoelastic material wherein comprises the sheet mica of 5% weight;
Figure 15 is the plotted curve that is similar to Figure 10, and viscoelastic material wherein comprises the sheet mica of 5% weight;
Figure 16 is similar to Figure 11, and wherein viscoelastic material comprises the sheet mica of 5% weight;
Figure 17-19 is similar to Figure 11 respectively, wherein, the direction of viscoelastic material band respectively with Fig. 2,4 is identical with 5.
Consult Fig. 1 and 2 now, expression is according to the vibration damping composite material 20 of first embodiment of the invention among the figure.Composite material 20 comprises that a pair of limiting layer 21 and 22, one viscoelastic layers 25 are clipped in therebetween.Limiting layer 21 and 22 is preferably formed by proper metal, and is thicker than viscoelastic layer 25 significantly.But limiting layer 21 and 22 obviously also can form with other the suitable material with sufficiently high Young's modulus.As shown in the figure, composite material 20 is long, is cuboid substantially, and viscoelastic layer 25 comprises two kinds of different viscoelastic material A and B.Basic orientation of the present invention is that viscoelastic material A is arranged in the different adjacent areas with B, forms predetermined pattern.In the illustrated embodiment, the form of above-mentioned zone is that interlock, adjacency, parallel band 26 and 27, and every band preferably has identical width and in the transversely extension of composite material 20, is basically perpendicular to the longitudinal axis of composite material 20.In Fig. 2, staggered have less than half width of composite material 20 length with 26 and 27, and their patterned arrangement to repeat are extended on the length of composite material 20.
Now consult Fig. 3, another embodiment's viscoelastic layer 25A in the composite material shown in the figure 20.Viscoelastic layer 25A is similar to viscoelastic layer 25, difference be with repeat patterns comprise that three kinds different are with 26,27 and 28, respectively by three kinds of different viscoelastic material A, B and 3 constitutes.Obviously, also can use the pattern of the band of the viscoelastic material that comprises other number.
An importance of the present invention is, the claimant has been found that, compare with the composite material that only utilizes one of viscoelastic material A or B, need not to require the stacked or layering of any different viscoelastic materials, composite material 20 can be realized the temperature range of significant wide effective noise abatement.Now consult Fig. 9-11 and be described, Fig. 9-the 11st, the coefficient of losses of some kinds of composite materials/temperature characteristics figure.More particularly, Fig. 9,10 and 11 is respectively for the low-limit frequency vibration mode 1-5 of composite material, the temperature variant plotted curve of coefficient of losses of relevant composite material.
Fig. 9 is relevant with following composite material, that is, this composite material has only a viscoelastic layer, and it is made of a kind of viscoelastic material A that is clipped between two limiting layers, and each limiting layer is 0.0123 inch thick cold rolled sheet.As can be seen, this composite material is demonstrating effective effectiveness in vibration suppression (10-1 or higher coefficient of losses) from about 40 °F to about 130 temperature range.The plotted curve of Figure 10 is about a kind of similar composite material, and difference is that viscoelastic layer is only to be made of a kind of viscoelastic material B.As can be seen, this composite material is demonstrating effective effectiveness in vibration suppression from about 110 °F to about 250 temperature range.
Figure 11 is about according to composite material of the present invention, more particularly, be about according to the embodiment's of Fig. 1 and 2 composite material, wherein, limiting layer is identical with top description, but viscoelastic layer comprises the adjacent band mutually of viscoelastic material A and B, and the width of every band is half of composite material length, and therefore only there is one in every kind of band.As can be seen from Figure 11, this composite material is showing effective effectiveness in vibration suppression from about 40 °F to about 210 temperature range.Therefore, the present invention has significantly widened the temperature range of effective vibration damping.
In the embodiment of Fig. 1-3, viscoelastic layer 25 applies with liquid form.More particularly, be with 26,27 and 28 to be to be applied to following in limiting layer 21 and 22, promptly on substrate one deck by proper device.Then, heat coated substrate, remove and to desolvate, when viscoelastic layer 25 or 25A as yet not when saturating with limiting layer 21 or 22 in another layer be arranged in the top of viscoelastic layer; Viscoelastic layer plays limiting layer is cemented in together effect.
But the form that viscoelastic layer 25 or 25A also can films applies.More particularly, have the viscoelastic material A of separating underlay, the film of B and C is cut into the band of proper width.Then, remove separating underlay from being with, below they being bonded in limiting layer 21 or 22 is on substrate one deck again, and pie graph 2 or pattern shown in Figure 3 form and be with 26,27 and 28.And then another limiting layer is laid on the top.Obviously viscoelastic layer 25 can oneself be bonded on limiting layer 21 and 22.
In the embodiment of Fig. 1-3, the band 26-28 of viscoelastic material is in the transversely layout of composite material, promptly perpendicular to its longitudinal axis.But band also can be arranged on other direction.For example, in Fig. 4, what viscoelastic layer 25B comprised two kinds of different viscoelastic material A and B is with 26 and 27, and wherein, band is along the composite material portrait orientation.In Fig. 5, express another embodiment's viscoelastic layer 25C, wherein, two kinds of different composite A and B with 26 and 27 with respect to the oblique orientation of the longitudinal axis of composite material.Obviously, any in the direction of Figure 4 and 5 all can utilize three kinds or more kinds of viscoelastic material bands.The claimant has been found that the damping property of not appreciable impact of the direction composite material of band.
The number of times whether pattern of band repeats and repeat depends on the overall dimension of composite material and the width of each viscoelastic material band.Aspect this, can adopt multiple different bandwidth.It is believed that when following situation the viscoelastic material band is effectively, that is, bandwidth is less than the length of the composite material parts number divided by employed different viscoelastic materials, and greater than 1/4th of the wavelength of composite material parts smallest natural oscillation frequency.
Though the adjacent bandwidths degree equates in the illustrated embodiment,, depend on the character of employed viscoelastic material, the phase adjacent band of different materials obviously can have different width.In addition, though illustrated the pattern of band,, obvious principle of the present invention is applicable to other pattern of the adjacent area of different viscoelastic materials.
In test structure model of the present invention, limiting layer 21 and 22 thickness are significantly greater than the thickness of viscoelastic layer 25-25c.For example, the thickness that viscoelastic layer is general is about 0.001 inch, and the thickness range of each limiting layer is from about 0.01 to about 0.02 inch.But principle of the present invention obviously also is applicable to the composite structure that has other ratio between limiting layer thickness and viscoelastic layer thickness.
Now consult Fig. 6 and 7, expression is according to the composite material 30 of another embodiment of the present invention among the figure.Composite material 30 uses the limiting layer identical with composite material 20 and has the viscoelastic layer 35 that is clipped in suitable viscoelastic material formation therebetween.But, in the present embodiment, in viscoelastic layer 35, have many sheet micas 36.Viscoelastic layer 35 applies with liquid form, before putting on the limiting layer, sheet mica is stirred into viscoelastic material, and its consumption is about 5% of a viscoelastic mixture weight.
The sheet structure that sheet mica 36 is preferably thin, wherein, the ratio of maximum surface size and thickness from about 10 to about 100 scope.In a tested person embodiment of the present invention, the maximum surface size of sheet mica 36 is the thickness that is a bit larger tham viscoelastic layer 35.More particularly, in the thickness of viscoelastic layer was 0.001 example, it was about 0.00175 inch that the screen size that sheet mica 36 has makes maximum surface size, and sheet mica thickness is about 0.00001 inch.
Have been found that this sheet mica 36 that contains 5% weight tends to improve the peak value damping efficiency of viscoelastic material.Respectively about following composite material, that is, these composite materials are similar with 10 composite material to Fig. 9, just added the sheet mica 36 of 5% weight in every kind of composite material with the plotted curve of frequency change for Figure 14 and 15 coefficient of losses.From above-mentioned plotted curve more as can be seen, add coefficient of losses/temperature characteristic that sheet mica tends to improve slightly most of vibration mode, particularly when peak value and upper and lower end in temperature range.
Now consult Fig. 8, a kind of composite material 40 of expression among the figure, it is similar to composite material 20, and difference is that it has viscoelastic layer 45, comprises the sheet mica 36 of 5% weight in its each viscoelastic material band 26 and 27.Coefficient of losses/temperature characteristics figure that Figure 16 is this composite material when some low-limit frequency vibration mode.Figure 16 and Figure 11 comparison shows that, add sheet mica 36 and significantly improved in effective vibration damping temperature range, that is, and from about 50 °F to about 210 characteristic curve level, particularly improved the peak loss coefficient.Therefore, add sheet mica 36 tends to compensate the peak loss coefficient value of the viscoelastic material A that causes in conjunction with them and B in the belt composite material decline slightly.Above-mentioned decline can relatively finding out from Figure 11 and Fig. 9 and 10.
Characteristics of the present invention will be described further by following example.
Example 1
Two limiting layers are set, and each limiting layer is 0.0123 inch thick 1 " * 6 " COLD ROLLING RECTANGULAR steel plate.Then, two kinds of liquid form different viscoelastic materials are applied on the surface of one of limiting layer with band shape.One of viscoelastic material is with trade name MORSTIK by MortonInternational company
The sort of self-crosslinking of selling, acrylic acid solution, contact adhesive.Another kind of viscoelastic material is the sort of liquid vibration damping polymer that 3M company sells at trade name SCOTCHDAMPSJ-2125.When applying viscoelastic material, in the middle of the substrate limiting layer, the Ju along a side extending of its length placement places two kinds of viscoelastic materials respectively in the both sides of limiting layer Ju.Leave behind every kind of viscoelastic material of metering under the rod to form 0.001 inch thick coating one.Substrate after will applying is then put into stove and is desolvated to remove, and when not parching as yet, another limiting layer is layered on the viscoelastic layer, thereby forms except that the bandwidth difference and composite material identical shown in Fig. 1 and 2.
This composite material is tested with following manner: clamp an end with cantilevered fashion, the magnetic pumping far-end causes vibration then.Coefficient of losses/temperature characteristic for the some low-limit frequency vibration mode that encouraged shown in Figure 11.
Comparison example 2 and 3
Carry out the process identical with example 1, but difference is to be regardless of band, viscoelastic layer only contains MORSTIK in example 2
Material, viscoelastic layer only contains SCOTCHDAMP in example 3
Material.These two kinds of composite materials are tested with mode described in the example 1.In Fig. 9, represent the coefficient of losses/temperature characteristic of example 2, and in Figure 10, represent the individual features of example 3.
Example 4
Repeat example 1, difference is that the thickness of each limiting layer is 0.010 inch, and the viscoelasticity band applies with form of film, and its width is 1 inch.Specifically, the film of two kinds of viscoelastic materials is cut into the band of 1 " * 1 ", and three bands are layered on the base layer so that interlace mode is horizontal, forms and the sort of layout identical shown in Fig. 1 and 2.Then, another limiting layer is layered on the viscoelastic layer top, resulting composite material is tested by example 1 described mode.Figure 12 represents the coefficient of losses/temperature characteristic for the vibration mode of the some low-limit frequencies that encouraged.
Example 5
Repeat example 1, difference is that viscoelastic layer comprises the third viscoelastic material band, and 2 inches of every bands are wide, and band applies with form of film.The third viscoelastic material is the sort of silicone-based polymer that FLexcon company sells with trade name " DENSIL 1078 ".Every kind of viscoelastic material film is cut into the band of 1 " * 2 ", removes separating underlay, lays band across the substrate limiting layer, and 1 inch yardstick is the horizontal expansion at limiting layer, and 2 inches yardsticks are the longitudinal extensions at limiting layer.Then, another limiting layer is layered on the viscoelastic layer.Resulting composite material is tested by example 1 described mode.Figure 13 represents the coefficient of losses/temperature characteristic of some low-limit frequency vibration mode of being encouraged.
Example 6
Repeat example 1, difference is before being applied on the substrate limiting layer sheet mica to be added in every kind of viscoelastic material.Specifically, the screen size of sheet mica makes that maximum surface size is about 0.00175 inch, and the sheet mica of sneaking in every kind of viscoelastic material accounts for 5% of gained mixture total weight amount.According to the process of example 1, two kinds of viscoelastic materials that add sheet mica are applied on the substrate limiting layer then, with the rod of the leaving behind sheet mica of flattening.Make it with the angle tilt surperficial less with respect to the substrate limiting layer.Resulting composite material is shown in Figure 8 the sort of.This composite material is tested according to example 1 described mode.Figure 14 represents the coefficient of losses/temperature characteristics of the vibration mode of some low-limit frequencies that encourage.
Comparison example 7 and 8
Repeat comparison example 2 and 3, difference is in every kind of situation, mixes before being applied on the substrate limiting layer with viscoelastic material with the sort of sheet mica described in the example 6 of 5% weight.In every kind of situation, test resulting composite material in mode described in the example 1.Figure 15 and 16 is illustrated respectively in the coefficient of losses/temperature characteristic of the some low-limit frequency vibration mode that encourage in the composite material of comparison example 7 and 8.
Example 9
Two limiting layers are set, and each limiting layer is 0.0123 inch thick cold rail rectangular steel plates in 1 " * 6 ".Then,, two kinds of form of film different viscoelastic materials are layered in the band mode on the surface of one of limiting layer, are that with example 4 differences bandwidth is 0.5 inch according to the mode shown in the example 4.One of viscoelastic material is MORSTIK described in the example 1
Material, and another kind of viscoelastic material is the DENSIL1078 material described in the example 5.Two kinds of viscoelastic material films are cut into the band of 0.5 " * 1 ", lay across base layer in staggered mode then, and the yardstick that makes 1 inch is perpendicular to the longitudinal extension of substrate, thereby produce and layout identical shown in Fig. 1 and 2.Then, another limiting layer is layered on the top of viscoelastic layer, tests resulting composite material according to the mode described in the example 1.Figure 17 represents the coefficient of losses/temperature characteristic of some vibration mode of the low-limit frequency that encouraged.
Example 10
Repeat example 9, difference is that each film is cut into the band of 0.5 " * 6 ".Be placed on the base layer with the mode of Fig. 4 band, make 6 inches yardsticks be parallel to the longitudinal axis of substrate every kind of material.Test this composite material in the mode of example 1.Figure 18 represents the coefficient of losses/temperature characteristic of some low-limit frequency vibration mode of being encouraged.
Example 11
Repeat example 9, difference be film be cut into have the 45 end 0.5 " wide band, and be placed on the base layer in staggered mode makes itself and substrate longitudinal axis angle at 45, thereby produces layout same as shown in Figure 5.Resulting composite material example 1 described mode is tested.Figure 19 represents the coefficient of losses/temperature characteristic of some low-limit frequency vibration mode of being encouraged.
Previous examples is used to describe principle of the present invention.But the present invention obviously also can use any many other viscoelastic materials that are applicable to vibration damping, also can use the limiting layer of other type and structure.
As can be seen from the above description, the invention provides the vibration damping composite material of improvement, it makes the temperature range optimization of effective vibration damping, has avoided the stacked or layering of viscoelastic material simultaneously.
Though illustrated and described specific embodiments of the invention,, those skilled in the art obviously can be made various modifications and variations and not exceed scope of the present invention it.Therefore, the purpose of claims is to cover all this modifications and variations, makes it fall into scope of the present invention.Top description of doing and accompanying drawing just are not as limiting for explanation.With the prior art is the basis, and actual range of the present invention is limited in claims.
Claims (30)
1. vibration damping composite material, it comprises: a substrate and be arranged on described suprabasil single viscoelasticity vibration damping layer, described vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
2. composite material as claimed in claim 1 is characterized in that: described pattern comprises two zones that are made of different viscoelastic materials respectively.
3. composite material as claimed in claim 1 is characterized in that: described pattern comprises three zones that are made of different viscoelastic materials respectively.
4. composite material as claimed in claim 1 is characterized in that: every kind of described viscoelastic material in the described pattern has the coefficient of losses/temperature characteristic that is different from other viscoelastic material.
5. composite material as claimed in claim 1 is characterized in that: described zone is banded, every band and adjacent band adjacency mutually, substantially parallel and basic with wide.
6. composite material as claimed in claim 5, it is characterized in that: described composite material is suitable for reducing to produce the vibration of noise in a kind of medium, this medium has multiple vibration mode, every kind of mode has different frequency of natural vibrations, and each described band has 1/4th width of the wavelength that vibrates greater than medium in the low-limit frequency vibration mode.
7. composite material as claimed in claim 1 is characterized in that: described substrate is made of metal.
8. composite material as claimed in claim 1 is characterized in that: described pattern is repetition.
9. vibration damping composite material, it comprises: a pair of limiting layer, and be clipped in single viscoelasticity vibration damping layer between the described limiting layer, described vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
10. composite material as claimed in claim 9 is characterized in that: described limiting layer is made of metal.
11. composite material as claimed in claim 9 is characterized in that: every kind of described viscoelastic material have with pattern in the different coefficient of losses/temperature characteristic of other viscoelastic material.
12. composite material as claimed in claim 9 is characterized in that: described limiting layer significantly is thicker than described vibration damping layer.
13. composite material as claimed in claim 9 is characterized in that: described pattern comprises two zones that are made of different viscoelastic materials respectively.
14. composite material as claimed in claim 9 is characterized in that: described pattern comprises three zones that are made of different viscoelastic materials respectively.
15. composite material as claimed in claim 9 is characterized in that: described zone is a band, and every described band is with adjacent band adjacency, and is substantially parallel, and has essentially identical width.
16. composite material as claimed in claim 15 is characterized in that: described substrate is long and narrow, has a longitudinal axis, and described band is perpendicular to described vertical axis extension.
17. composite material as claimed in claim 15 is characterized in that: described substrate is long and narrow, has a longitudinal axis, and described band is parallel to described vertical axis extension.
18. composite material as claimed in claim 15 is characterized in that: described substrate is long and narrow, has a longitudinal axis, and described band favours described vertical axis extension.
19. a vibration damping structure, it comprises: thin, a flat substantially viscoelastic material body, and many little sheet micas that is distributed in the whole body.
20. structure as claimed in claim 19, it is characterized in that: each described sheet mica has a thickness and one at the maximum surface size that is basically perpendicular on the direction of described thickness direction, the ratio of described maximum surface size and described thickness from about 10 to about 100 scope.
21. structure as claimed in claim 20 is characterized in that: described maximum surface size is greater than the thickness of described viscoelastic material body.
22. structure as claimed in claim 19 is characterized in that: described viscoelastic material body comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
23. structure as claimed in claim 22 is characterized in that: every kind of described viscoelastic material has the coefficient of losses/temperature characteristic that is different from other viscoelastic material in the pattern.
24. structure as claimed in claim 19 is characterized in that: in described structure, the weight percentage of sheet mica is from about 5% to about 10%.
25. structure as claimed in claim 24 is characterized in that: described sheet mica is with about 5% weight and exist.
26. a method that forms vibration damping composite material may further comprise the steps: a substrate is set, and applies single viscoelasticity vibration damping layer in substrate, described vibration damping layer comprises the pattern that the adjacent area of different viscoelastic materials constitutes.
27. method as claimed in claim 26 is characterized in that: described vibration damping layer be applied to liquid form suprabasil.
28. method as claimed in claim 27 is characterized in that: described vibration damping layer comprises the many little sheet mica that is distributed in the whole described vibration damping layer.
29. method as claimed in claim 26 is characterized in that: described vibration damping layer be applied to solid form suprabasil.
30. method as claimed in claim 29 is characterized in that: described vibration damping layer be adhesively fixed on suprabasil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96122762 CN1153703A (en) | 1995-11-01 | 1996-10-30 | Patterned noise damping composite |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US551,406 | 1995-11-01 | ||
| CN 96122762 CN1153703A (en) | 1995-11-01 | 1996-10-30 | Patterned noise damping composite |
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| Publication Number | Publication Date |
|---|---|
| CN1153703A true CN1153703A (en) | 1997-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96122762 Pending CN1153703A (en) | 1995-11-01 | 1996-10-30 | Patterned noise damping composite |
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| CN (1) | CN1153703A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102792052A (en) * | 2009-12-14 | 2012-11-21 | 通用汽车环球科技运作有限责任公司 | Coulomb damping features using ultrasonic welding |
| CN106899141A (en) * | 2015-12-18 | 2017-06-27 | 法雷奥***公司 | For the gear motor unit of windshield wiper |
| CN109263165A (en) * | 2018-10-26 | 2019-01-25 | 西南交通大学 | A kind of middle low frequency suction vibration isolation metamaterial of multiband selected control |
| CN109963659A (en) * | 2016-11-17 | 2019-07-02 | 日本电产科宝株式会社 | The manufacturing method of vibration actuator mounting structure, the electronic equipment with the vibration actuator mounting structure and the vibration actuator mounting structure |
-
1996
- 1996-10-30 CN CN 96122762 patent/CN1153703A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102792052A (en) * | 2009-12-14 | 2012-11-21 | 通用汽车环球科技运作有限责任公司 | Coulomb damping features using ultrasonic welding |
| CN102792052B (en) * | 2009-12-14 | 2016-05-04 | 通用汽车环球科技运作有限责任公司 | Utilize the Coulomb damping characteristic of ultrasonic bonding |
| CN106899141A (en) * | 2015-12-18 | 2017-06-27 | 法雷奥***公司 | For the gear motor unit of windshield wiper |
| CN106899141B (en) * | 2015-12-18 | 2020-06-02 | 法雷奥***公司 | Gear motor unit for windscreen wiper |
| CN109963659A (en) * | 2016-11-17 | 2019-07-02 | 日本电产科宝株式会社 | The manufacturing method of vibration actuator mounting structure, the electronic equipment with the vibration actuator mounting structure and the vibration actuator mounting structure |
| CN109963659B (en) * | 2016-11-17 | 2021-02-05 | 日本电产科宝株式会社 | Vibration actuator mounting structure, electronic apparatus having the same, and method of manufacturing the same |
| CN109263165A (en) * | 2018-10-26 | 2019-01-25 | 西南交通大学 | A kind of middle low frequency suction vibration isolation metamaterial of multiband selected control |
| CN109263165B (en) * | 2018-10-26 | 2024-01-30 | 西南交通大学 | Multiband-selected-control medium-low frequency absorption and vibration isolation metamaterial |
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