EP0037997A1 - Damped structure - Google Patents

Damped structure Download PDF

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Publication number
EP0037997A1
EP0037997A1 EP81102561A EP81102561A EP0037997A1 EP 0037997 A1 EP0037997 A1 EP 0037997A1 EP 81102561 A EP81102561 A EP 81102561A EP 81102561 A EP81102561 A EP 81102561A EP 0037997 A1 EP0037997 A1 EP 0037997A1
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EP
European Patent Office
Prior art keywords
layers
elements
platelet
covering
damping
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.)
Granted
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EP81102561A
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German (de)
French (fr)
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EP0037997B1 (en
Inventor
Michael Dipl.-Phys. Mohrenstein-Ertel
Helmut Dipl.-Ing. Albrecht
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Airbus Defence and Space GmbH
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Messerschmitt Bolkow Blohm AG
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Priority to AT81102561T priority Critical patent/ATE6378T1/en
Publication of EP0037997A1 publication Critical patent/EP0037997A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/8409—Sound-absorbing elements sheet-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered

Definitions

  • the invention relates to a sound-absorbing 'covering for firm, permanent or temporary support on surfaces of a body to be damped, consisting of platelet elements of high elasticity, which are arranged side by side and offset in two or more layers, with a material for converting between the layers Shear forces located in heat.
  • Such a damping coating is known for example from DE-PS 27 08 896 and is characterized by a theoretically unsurpassable ratio between the loss modulus of the damping coating and the elastic modulus of the body to be damped. This ratio represents a measure of the damping effect of a damping covering.
  • the damping mass in such a covering should primarily absorb the shear forces occurring between the platelets and convert them into heat. At the same time, however, the damping mass should hold the individual layers of the platelet elements together in order to ensure sensible handling of the covering.
  • both properties are not ideally compatible with one another.
  • a band-shaped damping covering that can be rolled up for transport and storage purposes is advantageously designed according to patent claims 5 or 6.
  • the outer layers are tensioned so that they exert constant pressure on the layers in between and the damping mass.
  • the precise adherence to the layer thickness of the damping material between the platelet layers and its shear modulus is of crucial importance.
  • compliance with these sizes is often difficult.
  • This problem can be solved according to claim 8 for a sound-absorbing covering by using a liquid-absorbing gel.
  • the damping mass can then be processed, for example, in the solid state as a film and can only be brought to the desired values by means of a controlled swelling process in a liquid after completion of the damping covering.
  • the damping coating shown in a supervision acc. Fig. 1a consists of two layers 1 and 2 of square plate elements 1.1 and 2.1 made of a material with high elasticity, such as steel.
  • the plate elements of the two layers are arranged offset to one another such that a plate element of layer 1 covers the corners of four adjacent plate elements of layer 2 evenly and vice versa.
  • the lower layer 2 is provided with an adhesive, not shown, for firm, permanent or temporary support on a body to be damped.
  • the plate elements 2.1 of the lower layer have two tabs 2.2, which are each pushed between two plate elements 1.1 of the upper layer 1 and bent over one of the plates 1.1. If the tabs 2.2 are arranged and bent in the manner indicated in FIG. 1 a, each plate of layer 1 is held by two opposite plates 2.2 of two plate elements of the lower layer 2. Since the mounting by the tabs 2.2 allow movements of the plate elements in the plane of the surface, vibrations introduced within a plane of the area are not transmitted from one position to the other by the tabs 2.2. On the other hand, the tabs prevent the entire covering from breaking down into its individual parts if the damping material is not suitable for holding the platelet layers together.
  • the band-shaped damping covering shown in a section in FIG. 2c has two different bands of adjoining plate elements, which are viewed from above. 2a and b are shown.
  • the so-called platelet tape 3 shown in FIG. 2a consists of rectangular or square platelet elements 3.1 arranged next to one another, which are connected at one edge via connecting webs 3.2.
  • the other platelet band 4 shown in FIG. 2b also consists of square or rectangular platelet elements 4.1 which are arranged next to one another, but which are connected to one another at both edges via relatively weak connecting webs 4.2.
  • the marginal centers each plate element 4.1 have notches 4.3.
  • the connecting webs 3.2 and 4.2 are dimensioned such that vibrations of a plate element are not, or only to a small extent, transmitted from them to adjacent plate elements.
  • two platelet bands are gem.
  • Fig. 2a pressed into a rectangular wave band, so that the plate elements 3.1 alternately form the upper or lower part of the rectangular amplitude and the connecting webs 3.2 are pulled by the pressing process and thereby tapered.
  • Two such bands 3.I and 3.II are pushed laterally into one another with their open edges not provided with connecting webs and thus form the upper and lower plate layers of a damping band, two plate elements of one band 3.I and the other band 3.II. lie congruently on top of each other.
  • the space between the layers thus formed is alternately filled with an odd number of staggered platelet bands 4 - such a platelet band is present in FIG.
  • the connecting webs 3.2 of the platelet bands 3.I or 3.II run through the notches 4.3 of the platelet band 4.
  • the notches are dimensioned such that a defined range of motion between a platelet band 4 and one of the platelet bands 3.I, or. 3.II remains.
  • part of the platelet ribbons must have 4 notches in the area of the connecting webs 4.2 so that these platelet ribbons by one each half of the plate length can be arranged offset to the adjacent bands.
  • the individual platelet layers can neither fail nor shift in the longitudinal direction in such a way that the order of the individual platelet elements required according to the theory changes fundamentally.
  • a lateral displacement of the platelet bands 3.I and 3.II can either be prevented by arranging outward-pointing tabs 3.3 on the outer edges of the platelet elements 3.I, which are not connected to one another by connecting webs, and which after two have been pushed into one another such platelet tapes are bent.
  • Another possibility of preventing the damping covering from falling apart by lateral displacement is to use platelet bands 3 according to FIG. Fig. 3, in which the connecting webs 3.2 between the plate elements 3.1 are alternately arranged on one or the other outer edge region.
  • connection between the outer layers of a band-shaped damping covering in which plate elements 6.1 of the upper layer of the damping band are held together with plate elements 6.2 of the lower layer on the outer edge regions via connections 7.
  • These connections 7 are rotatable at the connection points 7.1 with the plate elements and at the intersection 7.2 or at least easily movable within a certain angular range.
  • Connections of this type can consist, for example, of a thread mesh

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Environmental & Geological Engineering (AREA)
  • Building Environments (AREA)
  • Springs (AREA)
  • Laminated Bodies (AREA)

Abstract

Body noise or mechanical vibrations are damped by a sound or noise damping covering that may be secured permanently or temperarily to the surfaces of a body to be damped in the manner of an adhesive tape. The tape or band type damping covering comprises two layers of platelet elements of highly elastic material interconnected with play, for example by hooks. The layers are so arranged that the platelet elements in one layer are staggered relative to the platelet elements in the other layer. An intermediate layer of a plastic type material is interposed between the two outer platelet layers. The plastic material converts shearing stresses and hence the vibrations into heat. The plastic material may be a gel which absorbs liquid.

Description

Die Erfindung betrifft einen schalldämpfenden ' Belag zur festen, dauerhaften oder vorübergehenden Auflage auf Flächen eines zu bedämpfenden Körpers, bestehend aus Plättchenelementen hoher Elastizität, die nebeneinander und in zwei oder mehr Lagen übereinander versetzt angeordnet sind, wobei sich zwischen den Lagen ein Material zur Umwandlung von Scherkräften in Wärme befindet.The invention relates to a sound-absorbing 'covering for firm, permanent or temporary support on surfaces of a body to be damped, consisting of platelet elements of high elasticity, which are arranged side by side and offset in two or more layers, with a material for converting between the layers Shear forces located in heat.

Ein derartiger Dämpfungsbelag ist beispielsweise aus der DE-PS 27 08 896 bekannt und zeichnet sich durch ein theoretisch nicht zu übertreffendes Verhältnis zwischen dem Verlustmodul des Dämpfungsbelages und dem Elastizitätsmodul des zu bedämpfenden Körpers aus. Dieses Verhältnis stellt ein Maß für die Dämpfungswirkung eines Dämpfungsbelages dar. Die Dämpfungsmasse bei einem derartigen Belag soll nach der dafür zugrundeliegenden Theorie vornehmlich die zwischen den Plättchen auftretenden Scherkräfte aufnehmen und in Wärme umsetzen. Gleichzeitig soll die Dämpfungsmasse jedoch die einzelnen Lagen der Plättchenelemente untereinander zusammenhalten, um eine vernünftige Handhabung des Belages zu gewährleisten. Beide Eigenschaften sind jedoch in idealer Weise nicht miteinander vereinbar.Such a damping coating is known for example from DE-PS 27 08 896 and is characterized by a theoretically unsurpassable ratio between the loss modulus of the damping coating and the elastic modulus of the body to be damped. This ratio represents a measure of the damping effect of a damping covering. According to the underlying theory, the damping mass in such a covering should primarily absorb the shear forces occurring between the platelets and convert them into heat. At the same time, however, the damping mass should hold the individual layers of the platelet elements together in order to ensure sensible handling of the covering. However, both properties are not ideally compatible with one another.

Es ist Aufgabe der Erfindung, einen schalldämpfenden Belag der obengenannten Art zu schaffen, mit dem auch Dämpfungsstoffe verwendet werden können, die keine oder nur geringe adhäsive Eigenschaften aufweisen.It is an object of the invention to provide a sound-absorbing covering of the type mentioned above, with which damping materials can also be used which have no or only slight adhesive properties.

Diese Aufgabe erfüllt ein nach Patentanspruch 1 ausgebildeter Dämpfungsbelag, welcher in vorteilhafter Weise nach den Patentansprüchen 2 bis 4 weitergebildet sein kann.This object is achieved by a damping covering designed according to patent claim 1, which can advantageously be further developed according to patent claims 2 to 4.

Ein zu Transport- und Lagerzwecken aufrollbarer bandförmiger Dämpfungsbelag ist vorteilhafterweise nach den Patentansprüchen 5 oder 6 ausgebildet.A band-shaped damping covering that can be rolled up for transport and storage purposes is advantageously designed according to patent claims 5 or 6.

Da zur optimalen Übertragung von durch Schwingungen verursachten Scherkräften zwischen den Plättchenelementen diese in einem intensiven Kontakt mit der Dämpfungsmasse stehen müssen, ist es vorteilhaft, wenn z.B. nach dem im Patentanspruch 7 beschriebenen Verfahren die äußeren Lagen so verspannt werden, daß sie einen ständigen Druck auf die dazwischen liegenden Lagen und die Dämpfungsmasse ausüben.Since, for optimal transmission of shear forces caused by vibrations between the plate elements, they have to be in intensive contact with the damping mass, it is advantageous if, for example, according to the method described in claim 7, the outer layers are tensioned so that they exert constant pressure on the layers in between and the damping mass.

Nach der in dem obengenannten Patent beschriebenen Theorie ist die genaue Einhaltung der Schichtdicke des Dämpfungsmaterials zwischen den Plättchenlagen sowie dessen Schubmodul von entscheidender Bedeutung. Bei der Verarbeitung von flüssigen Dämpfungsmaterialien ist die Einhaltung dieser Größen oft schwierig. Dieses Problem läßt sich gemäß Patentanspruch 8 für einen schalldämpfenden Belag durch Verwendung eines Flüssigkeit aufnehmenden Geles lösen. Die Dämpfungsmasse kann dann beispielsweise im festen Zustand als Folie verarbeitet werden und erst nach Fertigstellung des Dämpfungsbelages durch einen gesteuerten Quellvorgang in einer Flüssigkeit auf die gewünschten Werte gebracht werden.According to the theory described in the above-mentioned patent, the precise adherence to the layer thickness of the damping material between the platelet layers and its shear modulus is of crucial importance. When processing liquid damping materials, compliance with these sizes is often difficult. This problem can be solved according to claim 8 for a sound-absorbing covering by using a liquid-absorbing gel. The damping mass can then be processed, for example, in the solid state as a film and can only be brought to the desired values by means of a controlled swelling process in a liquid after completion of the damping covering.

Die nachfolgend beschriebenen Figuren zeigen in teilweise schematischer Weise Ausführungsbeispiele für Dämpfungsbeläge nach der Erfindung. Es zeigen:

  • Fig. la-c den Aufbau eines zweilagigen flächenhaften Belages aus aus Plättchenelementen;
  • Fig. 2a-c den Aufbau eines dreilagigen bandförmigen Dämpfungsbelages;
  • Fig. 3 ein als Decklage geeignetes Plättchenband für einen mehrlagigen Dämpfungsbelag;
  • Fig. 4 eine Verbindung zwischen den äußeren Lagen eines mehrlagigen Dämpfungsbelages.
The figures described below show, in a partially schematic manner, exemplary embodiments for damping coverings according to the invention. Show it:
  • Fig. La-c the structure of a two-layer surface covering from platelet elements;
  • 2a-c the structure of a three-layer band-shaped damping covering;
  • 3 shows a platelet band suitable as a top layer for a multilayer damping covering;
  • Fig. 4 shows a connection between the outer layers of a multi-layer damping covering.

Der in einer Aufsicht gezeigte Dämpfungsbelag gem. Fig. 1a besteht aus zwei Lagen 1 und 2 von quadratischen Plättchenelementen 1.1 bzw. 2.1 aus einem Material mit hoher Elastizität, wie z.B. Stahl. Die Plättchenelemente der beiden Lagen sind derart versetzt zueinander angeordnet, daß jeweils ein Plättchenelement der Lage 1 die Ecken von vier aneinandergrenzenden Plättchenelementen der Lage 2 gleichmäßig überdeckt und umgekehrt. Zwischen den Lagen 1 und 2 befindet sich ein nicht dargestelltes Dämpfungsmaterial zur Aufnahme von Scherkräften, welche durch das Einleiten von Körperschallschwingungen in die untere Lage 2 zwischen den Plättchenelementen entstehen. Die untere Lage 2 ist mit einem nicht dargestellten Klebstoff zur festen, dauerhaften oder vorübergehenden Auflage auf einen zu bedämpfenden Körper versehen.The damping coating shown in a supervision acc. Fig. 1a consists of two layers 1 and 2 of square plate elements 1.1 and 2.1 made of a material with high elasticity, such as steel. The plate elements of the two layers are arranged offset to one another such that a plate element of layer 1 covers the corners of four adjacent plate elements of layer 2 evenly and vice versa. Between the layers 1 and 2 there is a damping material, not shown, for absorbing shear forces which arise from the introduction of structure-borne noise into the lower layer 2 between the plate elements. The lower layer 2 is provided with an adhesive, not shown, for firm, permanent or temporary support on a body to be damped.

Wie aus den Fig. 1b und c zu entnehmen ist, weisen die Plättchenelemente 2.1 der unteren Lage 2 Laschen 2.2 auf, welche jeweils zwischen zwei Plättchenelemente 1.1 der oberen Lage 1 hindurchgeschoben und über eines der Plättchen 1.1 gebogen werden. Wenn die Laschen 2.2 in der in Fig. 1a angedeuteten Weise angeordnet und gebogen werden, so wird jedes Plättchen der Lage 1 durch jeweils 2 gegenüberliegende Laschen 2.2 zweier Plättchenelemente der unteren Lage 2 gehalten. Da die Halterung durch die Laschen 2.2 Bewegungen der Plättchenelemente in Flächenebene zulassen, werden eingeleitete Schwingungen innerhalb einer Flächenebene durch die Laschen 2.2 nicht von einer Lage auf die andere übertragen. Andererseits verhindern die Laschen, daß der gesamte Belag in seine Einzelteile zerfällt, wenn das Dämpfungsmaterial nicht dazu geeignet ist, die Plättchenlagen untereinander zusammenzuhalten.As can be seen from FIGS. 1b and c, the plate elements 2.1 of the lower layer have two tabs 2.2, which are each pushed between two plate elements 1.1 of the upper layer 1 and bent over one of the plates 1.1. If the tabs 2.2 are arranged and bent in the manner indicated in FIG. 1 a, each plate of layer 1 is held by two opposite plates 2.2 of two plate elements of the lower layer 2. Since the mounting by the tabs 2.2 allow movements of the plate elements in the plane of the surface, vibrations introduced within a plane of the area are not transmitted from one position to the other by the tabs 2.2. On the other hand, the tabs prevent the entire covering from breaking down into its individual parts if the damping material is not suitable for holding the platelet layers together.

Der in Fig. 2c in einem Schnitt dargestellte bandförmige Dämpfungsbelag weist zwei unterschiedliche Bänder aus aneinanderhängenden Plättchenelementen auf, welche in einer Aufsicht. in den Fig. 2a und b dargestellt sind. Das in Fig. 2a gezeigte sog. Plättchenband 3 besteht aus rechteckigen oder quadratischen, nebeneinander angeordneten Plättchenelementen 3.1, welche an einem Rand über Verbindungsstege 3.2 zusammenhängen. Das in Fig. 2b gezeigte andere Plättchenband 4 besteht ebenfalls aus quadratischen oder rechteckigen, nebeneinander angeordneten Plättchenelementen 4.1, welche jedoch an beiden Rändern über relativ schwache Verbindungsstege 4.2 miteinander verbunden sind. Die Randmitten jedes Plättchenelementes 4.1 weisen Kerben 4.3 auf. Die Verbindungsstege 3.2 und 4.2 sind so dimensioniert, daß Schwingungen eines Plättchenelementes nicht oder nur in geringem Maße von diesen auf benachbarte Plättchenelemente übertragen werden.The band-shaped damping covering shown in a section in FIG. 2c has two different bands of adjoining plate elements, which are viewed from above. 2a and b are shown. The so-called platelet tape 3 shown in FIG. 2a consists of rectangular or square platelet elements 3.1 arranged next to one another, which are connected at one edge via connecting webs 3.2. The other platelet band 4 shown in FIG. 2b also consists of square or rectangular platelet elements 4.1 which are arranged next to one another, but which are connected to one another at both edges via relatively weak connecting webs 4.2. The marginal centers each plate element 4.1 have notches 4.3. The connecting webs 3.2 and 4.2 are dimensioned such that vibrations of a plate element are not, or only to a small extent, transmitted from them to adjacent plate elements.

Zur Herstellung eines bandförmigen Dämpfungsbelages gem. Fig. 2c werden jeweils zwei Plättchenbänder gem. Fig. 2a zu einem Rechteckwellenband gepreßt, so daß die Plättchenelemente 3.1 jeweils abwechselnd den oberen oder unteren Teil der Rechteckamplitude bilden und wobei die Verbindungsstege 3.2 durch den Preßvorgang gezogen und dabei verjüngt werden. Zwei solche Bänder 3.I und 3.II werden mit ihren offene nicht mit Verbindungsstegen versehenen Rändern seitlich ineinander geschoben und bilden somit die obere und untere Plättchenlage eines Dämpfungsbandes, wobei jeweils zwei Plättchenelemente des einen Bandes 3.I und des anderen Bandes 3.II deckungsgleich übereinander liegen. Der Raum zwischen den so gebildeten Lagen wird abwechselnd mit einer ungeraden Anzahl von versetzt angeordneten Plättchenbändern 4 - in Fig. 2c ist ein solches Plättchenband vorhanden - sowie mit Schichten eines Dämpfungsmaterials 5 ausgefüllt. Die Verbindungsstege 3.2 der Plättchenbänder 3.I bzw. 3.II verlaufen dabei durch die Kerben 4.3 des Plättchenbandes 4. Die Kerben sind so bemessen, daß ein definierter Bewegungsspielraum zwischen einem Plättchenband 4 und einem der Plättchenbänder 3.I,bzw. 3.II verbleibt. - Werden mehr als nur ein Plättchenband der in Fig. 2b gezeigten Art in den Raum zwischen den Bändern 3.I und 3.II eingefügt, so müssen ein Teil der Plättchenbänder 4 Kerben im Bereich der Verbindungsstege 4.2 aufweisen, damit diese Plättchenbänder um je eine halbe Plättchenlänge versetzt zu den benachbarten Bändern angeordnet werden können . - To produce a band-shaped damping covering acc. Fig. 2c two platelet bands are gem. Fig. 2a pressed into a rectangular wave band, so that the plate elements 3.1 alternately form the upper or lower part of the rectangular amplitude and the connecting webs 3.2 are pulled by the pressing process and thereby tapered. Two such bands 3.I and 3.II are pushed laterally into one another with their open edges not provided with connecting webs and thus form the upper and lower plate layers of a damping band, two plate elements of one band 3.I and the other band 3.II. lie congruently on top of each other. The space between the layers thus formed is alternately filled with an odd number of staggered platelet bands 4 - such a platelet band is present in FIG. 2c - and with layers of a damping material 5. The connecting webs 3.2 of the platelet bands 3.I or 3.II run through the notches 4.3 of the platelet band 4. The notches are dimensioned such that a defined range of motion between a platelet band 4 and one of the platelet bands 3.I, or. 3.II remains. - If more than just a platelet ribbon of the type shown in Fig. 2b inserted into the space between the ribbons 3.I and 3.II, part of the platelet ribbons must have 4 notches in the area of the connecting webs 4.2 so that these platelet ribbons by one each half of the plate length can be arranged offset to the adjacent bands. -

Bei dem in Fig. 2c gezeigten Dämpfungsbelag können die einzelnen Plättchenlagen weder ausfallen, noch sich in Längsrichtung so verschieben, daß sich die nach der Theorie geforderte Ordnung der einzelnen Plättchenelemente grundsätzlich ändert.In the damping covering shown in FIG. 2c, the individual platelet layers can neither fail nor shift in the longitudinal direction in such a way that the order of the individual platelet elements required according to the theory changes fundamentally.

Eine seitliche Verschiebung der Plättchenbänder 3.I und 3.II kann entweder dadurch verhindert werden, daß an den äußeren Rändern der Plättchenelemente 3.I, die nicht durch Verbindungsstege miteinander verbunden sind, nach außen weisende Laschen 3.3 angeordnet sind, welche nach dem Ineinanderschieben zweier derartiger Plättchenbänder umgebogen werden. Eine andere Möglichkeit, ein Auseinanderfallen des Dämpfungsbelages durch seitliche Verschiebung zu verhindern, besteht in der Verwendung von Plättchenbändern 3 gem. Fig. 3, bei denen die Verbindungsstege 3.2 zwischen den Plättchenelementen 3.1 jeweils abwechselnd an einem oder dem anderen äußeren Randbereich angeordnet sind.A lateral displacement of the platelet bands 3.I and 3.II can either be prevented by arranging outward-pointing tabs 3.3 on the outer edges of the platelet elements 3.I, which are not connected to one another by connecting webs, and which after two have been pushed into one another such platelet tapes are bent. Another possibility of preventing the damping covering from falling apart by lateral displacement is to use platelet bands 3 according to FIG. Fig. 3, in which the connecting webs 3.2 between the plate elements 3.1 are alternately arranged on one or the other outer edge region.

In Fig. 4 ist in schematischer Weise eine Verbindung zwischen den äußeren Lagen eines bandförmigen Dämpfungsbelages dargestellt, bei welchem Plättchenelemente 6.1 der oberen Lage des Dämpfungsbandes mit den Plättchenelementen 6.2.der unteren Lage an den äußeren Randbereichen über Verbindungen 7 zusammengehalten werden. Diese Verbindungen 7 sind an den Verbindungspunkten 7.1 mit den Plättchenelementen sowie im Kreuzungspunkt 7.2 drehbar oder zumindest innerhalb eines bestimmten Winkelbereiches leicht beweglich. Verbindungen dieser Art können beispielweise aus einem Fadengeflecht bestehen4 schematically shows a connection between the outer layers of a band-shaped damping covering, in which plate elements 6.1 of the upper layer of the damping band are held together with plate elements 6.2 of the lower layer on the outer edge regions via connections 7. These connections 7 are rotatable at the connection points 7.1 with the plate elements and at the intersection 7.2 or at least easily movable within a certain angular range. Connections of this type can consist, for example, of a thread mesh

Claims (8)

1. Schalldämpfender Belag zur festen, dauerhaften oder vorübergehenden Auflage auf Flächen eines zu bedämpfenden Körpers, bestehend aus Plättchenelementen hoher Elastizität, die nebeneinander und in zwei oder mehr Lagen übereinander versetzt angeordnet sind, wobei sich zwischen den Lagen ein Material zur Umwandlung von Scherkräften in Wärme befindet, dadurch gekennzeichnet , daß zumindest die Plättchenelemente (1.1, 2.1; 3.1; 6.1,6.2) der beiden äußeren Lagen sowohl innerhalb einer Lage, als auch zumindest teilweise zwischen den Lagen, unter Beibehaltung eines Bewegungsspielraumes innerhalb der Flächenebene des Belages, miteinander verbunden sind.1. Sound-absorbing covering for firm, permanent or temporary support on surfaces of a body to be damped, consisting of platelet elements of high elasticity, which are arranged next to one another and offset in two or more layers, with a material between the layers for converting shear forces into heat located, characterized in that at least the plate elements (1.1, 2.1; 3.1; 6.1,6.2) of the two outer layers are connected to each other both within a layer and at least partially between the layers, while maintaining a freedom of movement within the surface plane of the covering . 2. Belag nach Anspruch 1, dadurch gekennzeichnet , daß der Bewegungsspielraum größer ist als die durch eingeleitete Körperschallschwingungen verursachten Schwingungsamplituden eines Plättchenelementes.2. Covering according to claim 1, characterized in that the range of motion is greater than the vibration amplitudes of a plate element caused by structure-borne sound vibrations. 3. Belag nach Anspruch 1 oder 2, dadurch gekennzeichnet , daß der Bewegungsspielraum durch definierte maximale Zug- oder Schubkräfte bestimmt wird, welche auf mechanische Verbindungen (3.2) zwischen zwei Plättchenelementen (3.1) wirken.3. Covering according to claim 1 or 2, characterized in that the range of motion is determined by defined maximum tensile or thrust forces which act on mechanical connections (3.2) between two plate elements (3.1). 4. Belag nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet , daß der Bewegungsspielraum durch mechanische Anschläge (3.3, 4,3) verschiebbarer und/oder drehbarer mechanischer Verbindungen (2.2, 3.2) zwischen zwei Plättchenelementen begrenzt wird.4. Covering according to one of claims 1 to 3, characterized in that the range of motion is limited by mechanical stops (3.3, 4.3) displaceable and / or rotatable mechanical connections (2.2, 3.2) between two plate elements. 5. Bandförmiger Dämpfungsbelag aus über Verbindungsstege miteinander verbundenen Plättchenelementen nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß zumindest ein Teil der Plättchenelemente (3.1, 6.1, 6.2) einer Lage Halteelemente (3.2, 7) aufweist, welche zumindest einen Teil der Plättchenelemente einer weiteren Lage unter Beibehaltung eines Bewegungsspielraumes halten. 5 . Band-shaped damping covering made of platelet elements connected to one another via connecting webs according to one of claims 1 to 4, characterized in that at least some of the platelet elements (3.1, 6.1, 6.2) have a layer of holding elements (3.2, 7) which at least a part of the platelet elements of another Maintain position while maintaining freedom of movement. 6. Dämpfungsbelag nach Anspruch 5, dadurch gekennzeichnet , daß die äußeren Lagen aus zwei Bändern (3.I, 3.11) von an einem Randbereich über einen Verbindungssteg (3.2) zusammenhängenden Plättchenelementen (3.1.I, 3.1.II) bestehen, welche ineinander verschränkt angeordnet sind und, daß sich zwischen den äußeren Lagen eine ungerade Anzahl von Lagen aus Plättchenelementen (4.1) befindet.6. Damping covering according to claim 5, characterized in that the outer layers of two bands (3.I, 3.11) of at an edge area via a connecting web (3.2) connected plate elements (3.1.I, 3.1.II), which are interlocked are arranged and that there is an odd number of layers of platelet elements (4.1) between the outer layers. 7. Verfahren zur Herstellung eines Dämpfungsbelages nach Anspruch 5 oder 6, dadurch gekennzeichnet , daß die äußeren Lagen (3.I, 3.II) durch Strecken des bandförmigen Dämpfungsbelages in Längsrichtung gegeneinander verspannt werden.7. A method for producing a damping covering according to claim 5 or 6, characterized in that the outer layers (3.I, 3.II) are braced against one another in the longitudinal direction by stretching the band-shaped damping covering. 8.'Schalldämpfender Belag zur festen, dauerhaften oder vorübergehenden Auflage auf Flächen eines zu bedämpfenden Körpers, bestehend aus Plättchenelementen hoher Elastizität, die nebeneinander und in zwei oder mehr Lagen übereinander versetzt angeordnet sind, wobei sich zwischen den Lagen ein Material zur Umwandlung von Scherkräften in Wärme befindet, insbesondere nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet , daß das Material zur Umwandlung von Scherkräften in Wärme ein Flüssigkeit aufnehmendes Gel (5) ist.8. ' Sound absorbing covering for firm, permanent or temporary support on surfaces of a body to be damped, consisting of platelet elements of high elasticity, which are arranged next to each other and offset in two or more layers, with a material for converting shear forces into between the layers Heat, in particular according to one of claims 1 to 6, characterized in that the material for converting shear forces into heat is a liquid-absorbing gel (5).
EP81102561A 1980-04-10 1981-04-04 Damped structure Expired EP0037997B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81102561T ATE6378T1 (en) 1980-04-10 1981-04-04 DAMPING COATING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3013861A DE3013861C2 (en) 1980-04-10 1980-04-10 Cushioning lining
DE3013861 1980-04-10

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EP0037997A1 true EP0037997A1 (en) 1981-10-21
EP0037997B1 EP0037997B1 (en) 1984-02-22

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EP81102561A Expired EP0037997B1 (en) 1980-04-10 1981-04-04 Damped structure

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US (1) US4353433A (en)
EP (1) EP0037997B1 (en)
AT (1) ATE6378T1 (en)
DE (2) DE3013861C2 (en)

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EP0392407A3 (en) * 1989-04-08 1992-03-18 Gerhard Schmierer Maschinen- Anlagenbau Sound-absorbing body

Also Published As

Publication number Publication date
EP0037997B1 (en) 1984-02-22
DE3013861C2 (en) 1983-04-07
DE3162339D1 (en) 1984-03-29
ATE6378T1 (en) 1984-03-15
DE3013861A1 (en) 1981-10-15
US4353433A (en) 1982-10-12

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