JPH0469422A - Vibro-isolating body - Google Patents
Vibro-isolating bodyInfo
- Publication number
- JPH0469422A JPH0469422A JP18227590A JP18227590A JPH0469422A JP H0469422 A JPH0469422 A JP H0469422A JP 18227590 A JP18227590 A JP 18227590A JP 18227590 A JP18227590 A JP 18227590A JP H0469422 A JPH0469422 A JP H0469422A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- vibro
- many
- viscoelastic material
- large number
- 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
- 238000013016 damping Methods 0.000 claims description 27
- 239000000126 substance Substances 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000003190 viscoelastic substance Substances 0.000 abstract 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Landscapes
- Floor Finish (AREA)
- Vibration Prevention Devices (AREA)
- Vibration Dampers (AREA)
- Building Environments (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は住宅の床板等のような多数の固有振動数を有す
る連続体の制振に適する制振体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vibration damping body suitable for damping a continuous body having a large number of natural frequencies, such as a floorboard of a house.
振動系に対する制振手段としてダイナミックダンパ（動
吸振器）を用いることは、従来から広く行なわれている
。2. Description of the Related Art The use of dynamic dampers (dynamic vibration absorbers) as vibration damping means for vibration systems has been widely practiced.
このダイナミックダンパは、−船釣には第５図に示すよ
うに、バネａと粘性体すと付加質量Ｃとによって構成さ
れ、バネ定数・減衰定数・質量を調整することにより振
動系（制振対象物）ｄの振動を抑えるものである。As shown in Figure 5, this dynamic damper is composed of a spring a, a viscous body, and an additional mass C, and by adjusting the spring constant, damping constant, and mass, the vibration system (damping It suppresses the vibration of object) d.
このような原理を用いた具体的な制振体としては、たと
えば特開昭５９−１１０９３８号公報および特開平１−
１０２１５５号公報に示されているものが公知である。Specific vibration damping bodies using such a principle are disclosed in, for example, JP-A-59-110938 and JP-A-1-1999.
The one shown in Japanese Patent No. 102155 is publicly known.
前者においては、第６図に示すように板バネ１、粘性体
２、付加質量３によってダイナミックダンパを構成し、
後者では、住宅の床振動対策として、第７図に示すよう
に床材４を支持する根太５に、バネ材兼粘性材としての
フオーム層６、および付加質量としての鉄板７を取付け
てダイナミックダンパを構成している。In the former, as shown in FIG. 6, a dynamic damper is configured by a leaf spring 1, a viscous body 2, and an additional mass 3,
In the latter case, as shown in Fig. 7, a foam layer 6 as a spring material and a viscous material, and a steel plate 7 as an additional mass are attached to the joists 5 supporting the floor material 4 to create a dynamic damper as a countermeasure against floor vibrations in a house. It consists of
ところが、このような従来の制振体では、バネ質量−粘
性系の共振周波数で決まる特定振動数での振動に対して
しか有効でないため、対象物が床板等の板材や棒材のよ
うな多数の固有振動数を有する連続体の場合に十分な制
振効果が得られなかった。However, such conventional vibration damping bodies are only effective against vibrations at a specific frequency determined by the resonance frequency of the spring mass-viscous system. In the case of a continuum with a natural frequency of , a sufficient damping effect could not be obtained.
また、共振周波数を決めるためのバネ−質量−粘性系の
正確な調整が困難であるという問題もあった。Another problem was that it was difficult to accurately adjust the spring-mass-viscosity system for determining the resonance frequency.
そこで本発明は、広い振動数領域に亘って制振作用を発
揮し、とくに多数の固有振動数を有する連続体の制振に
効果的に使用することができる制振体を提供するもので
ある。Therefore, the present invention provides a vibration damping body that exhibits a damping effect over a wide frequency range and can be particularly effectively used for damping a continuum body having a large number of natural frequencies. .
本発明は、粘弾性体中に、多数の付加質量物を分布させ
てなるものである。In the present invention, a large number of additional mass substances are distributed in a viscoelastic body.
この構成により、バネ−質量−粘性系の多数のダンパ構
造体が多方向に連続する多自由度のダイナミックダンパ
が構成される。This configuration constitutes a multi-degree-of-freedom dynamic damper in which a large number of damper structures of a spring-mass-viscosity system are continuous in multiple directions.
このようなダンパ構成をもつ制振体では、非常に多くの
固有振動数と振動モードとを有するため、制振対象物が
いかなる振動数で振動しても、制振体がもついずれかの
振動モードが励起されてダンパ作用を果す。従って、広
い振動数領域で制振効果を発揮するため、連続体に対し
ても漏れのない確実な制振効果を得ることができる。A damping body with such a damper configuration has a large number of natural frequencies and vibration modes, so no matter what frequency the object to be damped vibrates, the vibration of any one of the damping bodies The mode is excited and acts as a damper. Therefore, since the vibration damping effect is exhibited in a wide frequency range, a reliable vibration damping effect without leakage can be obtained even on a continuous body.
さらに、この構成によると、粘弾性体が付加質量の周囲
で局所的に大きな変形を受けるため、粘弾性体による減
衰作用が効果的に果される。Furthermore, according to this configuration, the viscoelastic body undergoes large local deformation around the added mass, so that the damping effect by the viscoelastic body is effectively achieved.
しかも、付加質量が内包された一体構造で、対象物に適
した形状に自由に成形できること、対象物に対し接着等
によって簡単に取付けうることにより、従来の機械的ダ
イナミックダンパと比較して設置作業が遥かに容易とな
る。Moreover, since it has an integrated structure that includes additional mass, it can be freely formed into a shape suitable for the target object, and it can be easily attached to the target object by gluing, etc., making installation easier compared to conventional mechanical dynamic dampers. becomes much easier.
Ｃ実施例〕 本発明の実施例を第１図乃至第４図によって説明する。C Example] Embodiments of the present invention will be described with reference to FIGS. 1 to 4.
第１図は本発明の第１実施例にがかる制振体の一部を示
している。FIG. 1 shows a part of a vibration damper according to a first embodiment of the present invention.
この制振体は、シ′リコンゲルその他のゲル状物質のよ
うな高粘性と弾性とを有する粘弾性体１１中に、付加質
量物としての多数の鉄球１２・・・がランダムに分布さ
れた一体構造物として構成されている。This damping body has a large number of iron balls 12 as additional mass objects randomly distributed in a viscoelastic body 11 having high viscosity and elasticity such as silicone gel or other gel-like substance. It is constructed as an integral structure.
このような制振体は、第２図に示すようにバネ−質量−
粘性系の多数のダンパ構造体Ｄ・・・が多方向に連続し
たものであって、分布定数系に近い多自由度のダイナミ
ックダンパを構成していると考えられる。Such a vibration damping body has a spring mass as shown in Fig. 2.
A large number of viscous damper structures D... are continuous in multiple directions, and are considered to constitute a dynamic damper with multiple degrees of freedom similar to a distributed constant system.
従って、この制振体は、きわめて多数の固有振動数と振
動モードとを備えたものとなり、外部から振動が加えら
れると、その振動に合った振動モードが励起されて鉄球
１２・・・が振動し、この振動エネルギーが粘弾性体１
１の粘性によって吸収されることとなる。Therefore, this damping body has an extremely large number of natural frequencies and vibration modes, and when vibration is applied from the outside, a vibration mode that matches the vibration is excited, and the iron ball 12... vibrates, and this vibrational energy causes the viscoelastic body 1
It will be absorbed by the viscosity of 1.
しかも、この構成によると、粘弾性体１１が鉄球１２・
・・の周囲で局所的に大きな変形を受けるため、粘弾性
体１１が大きな粘性を発生する。このため、振動の減衰
効果がより高いものとなる。Moreover, according to this configuration, the viscoelastic body 11 is the iron ball 12.
Because the viscoelastic body 11 undergoes a large local deformation around the . . . , the viscoelastic body 11 generates large viscosity. Therefore, the vibration damping effect becomes higher.
なお、この制振体は、たとえば粘弾性体１１にゲル状物
質を用いる場合には、適当な配置で吊るした鉄球１２・
・・を液状態の粘弾性体中に浸し、この状態で粘弾性体
１１を固化させることによって製作することができる
第３図はこの制振体を住宅等の床に使用した場合を示し
ており、第１図に示す構造を備えた制振体にて制振シー
トＳを構成し、これを床材１３の下面に接着等にて取付
けている。１４は根太である。Note that, for example, when a gel-like substance is used for the viscoelastic body 11, this vibration damping body is made of iron balls 12 suspended in an appropriate arrangement.
... can be manufactured by dipping it into a viscoelastic body in a liquid state and solidifying the viscoelastic body 11 in this state. Figure 3 shows the case where this damping body is used on the floor of a house, etc. A damping sheet S is constituted by a damping body having the structure shown in FIG. 1, and is attached to the lower surface of the flooring 13 by adhesive or the like. 14 is a joist.
こうすると、床材１３がいかなる振動数で振動しても、
制振シートＳのいずれかの振動モードが励起されるため
、広い振動数領域に亘って床振動を抑制することができ
る。In this way, no matter what frequency the flooring 13 vibrates,
Since any vibration mode of the damping sheet S is excited, floor vibration can be suppressed over a wide frequency range.
また、従来のダイナミックダンパで必要であった、共振
周波数を決めるためのバネ−質量−粘性系の調整という
面倒な処理が一切不要となる。Further, the troublesome process of adjusting the spring-mass-viscosity system to determine the resonance frequency, which was necessary in conventional dynamic dampers, is completely unnecessary.
一方、第４図には本発明の第２実施例を示している。On the other hand, FIG. 4 shows a second embodiment of the present invention.
としての鉄棒１５・・・をランダムにさし込んで分布さ
せている。Iron rods 15... are randomly inserted and distributed.
この構成によっても、第１実施例の場合と同等の効果を
得ることができる。With this configuration as well, effects similar to those of the first embodiment can be obtained.
ところで、付加質量物の形状、材質、サイズ等は、この
制振体の用途等に応じて適宜選択することができる。By the way, the shape, material, size, etc. of the additional mass can be appropriately selected depending on the use of the vibration damper.
Ｃ発明の効果〕
上記のように本発明の制振体は、粘弾性中に多数の付加
質量物を分布させて、多数の固有振動数と振動モードと
を有する多自由度のダイナミックダンパとして構成した
から、広い振動数領域に亘って制振作用を発揮し、とく
に床板等のような多数の固有振動数を有する連続体の振
動抑制手段とて効果的に使用することができる。C Effects of the Invention] As described above, the vibration damper of the present invention is configured as a multi-degree-of-freedom dynamic damper having a large number of natural frequencies and vibration modes by distributing a large number of additional masses in the viscoelasticity. Therefore, it exhibits a damping effect over a wide frequency range, and can be particularly effectively used as a vibration suppressing means for a continuous body having a large number of natural frequencies, such as a floorboard.
また、制振対象物の形状等に応じて種々任意の形状に成
形できること、接着等によって対象物に簡単に取付けう
ることにより、従来の機械的ダイナミックダンパと比較
して、対象物に対する設置作業が遥かに容易となる。In addition, it can be molded into various arbitrary shapes depending on the shape of the object to be damped, and can be easily attached to the object by gluing, etc., so installation work on the object is easier than with conventional mechanical dynamic dampers. It becomes much easier.
第１図は本発明の第１実施例にかかる制振体を示す一部
断面図、第２図は同制振体の構造を説明するための模式
図、第３図は同制振体を床振動の抑制手段として使用し
た例を示す断面図、第４図は本発明の第２実施例を示す
部分斜視図、第５図はダイナミックダンパの原理説明図
、第６図および第７図はそれぞれ従来のダイナミックダ
ンパの構成例を示す断面図である。
１１・・・粘弾性体、１２・・付加質量物としての鉄球
、１５・・・付加質量物としての鉄棒。FIG. 1 is a partial sectional view showing a vibration damper according to a first embodiment of the present invention, FIG. 2 is a schematic diagram for explaining the structure of the vibration damper, and FIG. 4 is a partial perspective view showing a second embodiment of the present invention, FIG. 5 is a diagram explaining the principle of a dynamic damper, and FIGS. 6 and 7 are FIG. 3 is a cross-sectional view showing a configuration example of a conventional dynamic damper. 11...Viscoelastic body, 12...Iron ball as an additional mass object, 15...Iron rod as an additional mass object.
Claims (1)
ことを特徴とする制振体。1. A vibration damping body characterized by having a large number of additional masses distributed in a viscoelastic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18227590A JPH0469422A (en) | 1990-07-09 | 1990-07-09 | Vibro-isolating body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18227590A JPH0469422A (en) | 1990-07-09 | 1990-07-09 | Vibro-isolating body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0469422A true JPH0469422A (en) | 1992-03-04 |
Family
ID=16115420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18227590A Pending JPH0469422A (en) | 1990-07-09 | 1990-07-09 | Vibro-isolating body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0469422A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007036A1 (en) * | 1994-08-29 | 1996-03-07 | Tokai Rubber Industries, Ltd. | Dynamic damper and molding material therefor and method of manufacturing the same |
-
1990
- 1990-07-09 JP JP18227590A patent/JPH0469422A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996007036A1 (en) * | 1994-08-29 | 1996-03-07 | Tokai Rubber Industries, Ltd. | Dynamic damper and molding material therefor and method of manufacturing the same |
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