EP0037997B1 - Revêtement amortisseur - Google Patents

Revêtement amortisseur Download PDF

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Publication number
EP0037997B1
EP0037997B1 EP81102561A EP81102561A EP0037997B1 EP 0037997 B1 EP0037997 B1 EP 0037997B1 EP 81102561 A EP81102561 A EP 81102561A EP 81102561 A EP81102561 A EP 81102561A EP 0037997 B1 EP0037997 B1 EP 0037997B1
Authority
EP
European Patent Office
Prior art keywords
platelet
layers
elements
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.)
Expired
Application number
EP81102561A
Other languages
German (de)
English (en)
Other versions
EP0037997A1 (fr
Inventor
Michael Dipl.-Phys. Mohrenstein-Ertel
Helmut Dipl.-Ing. Albrecht
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Priority to AT81102561T priority Critical patent/ATE6378T1/de
Publication of EP0037997A1 publication Critical patent/EP0037997A1/fr
Application granted granted Critical
Publication of EP0037997B1 publication Critical patent/EP0037997B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 next to one another and offset in two or more layers, with a material for converting shear forces between the layers is in heat.
  • Such a damping coating is known, for example, from DE-B-2 708 896 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 plates and convert them into heat. At the same time, however, the damping mass should hold the individual layers of the platelet elements together 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 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.
  • 1 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. B. steel.
  • the plate elements of the two layers are arranged offset from 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.
  • 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, each plate of the 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 mutually attached ones Platelet elements, which are shown in a plan view in FIGS. 2a and b.
  • 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 edge centers of 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 3.1 and 3.11 are pushed laterally into one another with their open edges, which are not provided with connecting webs, and thus form the upper and lower plate layers of a damping band, two plate elements of the one band 3.1 and the other band 3.11 lying congruently one above the 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 3.1 and 3.11 run through the notches 4.3 of the platelet band 4.
  • the notches are dimensioned such that a defined range of motion remains between a platelet band 4 and one of the platelet bands 3.1 and 3.11. - If more than just a platelet ribbon of the type shown in Fig. 2b is inserted into the space between the ribbons 3.1 and 3.11, part of the platelet ribbons must have 4 notches in the area of the connecting webs 4.2 so that these platelet ribbons are offset by half a platelet length each the adjacent bands can be arranged.
  • 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 3.1 and 3.11 can either be prevented by arranging outward-pointing tabs 3.3 on the outer edges of the platelet elements 3.1, which are not connected to one another by connecting webs, which are bent after two such platelet bands have been pushed into one another.
  • 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 the plate elements 6.2 of the lower layer at 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 cross point 7.2 or at least easily movable within a certain angular range.
  • Connections of this type can consist, for example, of a thread mesh.

Landscapes

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

Claims (8)

1. Revêtement insonorisant, à appliquer de façon fixe, durable ou passagère sur des surfaces d'un corps à insonoriser, composé d'éléments en plaquettes de haute élasticité (1.1, 2.1, 3.1, 6.1, 6.2) qui sont disposés les uns à côté des autres et, avec décalage, les uns au-dessus des autres en deux ou plus de deux couches (1, 2), un matériau destiné à convertir des forces de cisaillement en chaleur étant en même temps placé entre lesdites couches, revêtement caractérisé par le fait qu'au moins les éléments en plaquettes (1.1, 2.1; 3.1; 6.1, 6.2) des deux couches extérieures comportent des éléments de maintien (2.2; 3.2; 7) par lesquels ils sont reliés entre eux, aussi bien à l'intérieur d'une couche qu'au moins en partie entre les couches, tout en conservant un jeu de déplacement à l'intérieur du plan de surface du revêtement.
2. Revêtement selon la revendication 1 caractérisé par le fait que le jeu de déplacement est plus grand que les amplitudes d'oscillation d'un élément en plaquette causées par les vibrations de conduction de bruit introduites.
3. Revêtement selon l'une des revendications 1 ou 2 caractérisé par le fait que le jeu de déplacement est déterminné par des forces de traction ou de poussée maximales définies qui agissent sur des jonctions mécaniques (3.2) entre deux éléments ou plaquettes (3.1).
4. Revêtement selon l'une des revendications 1 à 3 caractérisé par le fait que le jeu de déplacement est limité par des butées mécaniques (3.3, 4.3) de jonctions mécaniques (2.2, 3.2), déplaçables en translation et/ou en rotation entre deux éléments en plaquettes.
5. Revêtement insonorisant en forme de bande d'éléments en plaquettes reliés entre eux par des isthmes de jonction selon l'une des revendications 1 à 4 caractérisé par le fait qu'une partie des éléments en plaquettes (3.1, 6.1, 6.2) d'une couche comportent des éléments de maintien (3.2, 7) qui maintiennent au moins une partie des éléments en plaquettes d'une autre couche en laissant subsister un jeu de déplacement.
6. Revêtement insonorisant selon la revendication 5 caracterisé par le fait que les couches extérieures se composent de deux bandes (3.1, 3.11) d'éléments en plaquettes (3.1.1, 3.1.11) maintenus d'un seul sur un bord par un isthme de jonction (3.2), lesquelles bandes sont disposées emboîtées l'une dans l'autre, et qu'il se trouve entre les deux couches un nombre impair de couches d'éléments en plaquettes (4.1).
7. Procédé de réalisation d'un revêtement insonorisant selon la revendication 5 ou 6 caractérisé par le fait que l'on tend l'une par rapport à l'autre les couches extérieures (3.1, 3.11) par étirage de direction longitudinale du revêtement insonorisant en forme de bande.
8. Revêtement insonorisant selon l'une des revendications 1 à 6, à appliquer de façon fixe, durable ou passagère sur des surfaces d'un corps à insonoriser, composé d'éléments en plaquettes de haute élasticité qui sont disposés les uns à côté des autres et, avec décalage, les uns au-dessus des autres en deux ou plus de deux couches, un matériau destiné à convertir des forces de cisaillement en chaleur étant placé en même temps entre lesdites couches, revêtement caractérisé par le fait que le matériau destiné à convertir des forces de cisaillement en chaleur est un gel (5) absorbant du liquide.
EP81102561A 1980-04-10 1981-04-04 Revêtement amortisseur Expired EP0037997B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81102561T ATE6378T1 (de) 1980-04-10 1981-04-04 Daempfungsbelag.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3013861 1980-04-10
DE3013861A DE3013861C2 (de) 1980-04-10 1980-04-10 Dämpfungsbelag

Publications (2)

Publication Number Publication Date
EP0037997A1 EP0037997A1 (fr) 1981-10-21
EP0037997B1 true EP0037997B1 (fr) 1984-02-22

Family

ID=6099704

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81102561A Expired EP0037997B1 (fr) 1980-04-10 1981-04-04 Revêtement amortisseur

Country Status (4)

Country Link
US (1) US4353433A (fr)
EP (1) EP0037997B1 (fr)
AT (1) ATE6378T1 (fr)
DE (2) DE3013861C2 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3911561A1 (de) * 1989-04-08 1990-10-11 Gieger Hans Joachim Schallschluckender koerper
US4976334A (en) * 1989-12-05 1990-12-11 Bombardier, Inc. Noise reducing tool and method
DE4117740C1 (en) * 1991-05-30 1992-07-16 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Friction face damping lining for thin-wall component - which carries platelets, each with foot protruding transversely to flat side
US5472761A (en) * 1993-12-17 1995-12-05 Hoechst Celanese Corp. Vibration damping superabsorbent composites
US5886305A (en) * 1996-07-26 1999-03-23 Cascade Engineering, Inc. Sound insulating layer with integral rib structure
DE19653850C2 (de) * 1996-12-21 1999-01-28 Daimler Benz Aerospace Airbus Wandelement
WO2002043047A1 (fr) * 2000-11-21 2002-05-30 Thomas Wiegel Materiau stratifie
DE10231791C1 (de) * 2002-07-15 2003-12-18 Airbus Gmbh Mehrschichtplatte zur Verringerung der Schallabstrahlung
ITGE20020068A1 (it) * 2002-07-25 2004-01-26 Impresa Marinoni S R L Dispositivo atto a smorzare le vibrazioni a cassette modulari sospesee loro procedimento di ralizzazione
SE528470C2 (sv) 2004-02-03 2006-11-21 Mircona Ab Vibrationsdämpad verktygshållare med viskoelastiskt dämpningsmaterial
SE528247C2 (sv) * 2004-05-07 2006-10-03 Mircona Ab Vibrationsdämpad verktygshållare
FR2870308B1 (fr) * 2004-05-13 2006-07-21 Eurocopter France Revetement absorbant a haut pouvoir amortissant
CN1989782B (zh) * 2004-09-15 2011-12-07 上岛一夫 音响机器用垫
US7328770B2 (en) * 2005-06-16 2008-02-12 Owens Jeffrey A Strap silencer
US9211690B1 (en) 2005-07-29 2015-12-15 Hrl Laboratories, Llc Microstructured reconfigurable composite material
FR2909740B1 (fr) * 2006-12-11 2009-01-30 Eurocopter France Revetement absorbant
DE102007022616C5 (de) * 2007-05-15 2013-01-17 Airbus Operations Gmbh Mehrschichtplatte mit schräger Schlitzung des Plattenkerns zur Reduzierung der Körperschallabstrahlung und zur Erhöhung der Schalldämmung bei Beibehalten der mechanischen Stabilität
DE102008063923A1 (de) * 2008-12-19 2010-06-24 Airbus Deutschland Gmbh Mehrschichtplatte zur Schalldämmung
FR2948431B1 (fr) * 2009-07-21 2011-06-24 Eurocopter France Revetement isolant a masse amplifiee

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514170A (en) * 1945-10-12 1950-07-04 Raybestos Manhattan Inc Insulating material
DE967519C (de) * 1952-09-20 1957-11-14 Licentia Gmbh Schalldaempfende Schutzhuelle fuer Maschinen
US3087567A (en) * 1959-03-06 1963-04-30 Bolt Beranek & Newman High acoustic-energy transmission-loss panel and the like
GB890249A (en) * 1959-11-16 1962-02-28 Lord Mfg Co Damped structure
US4023651A (en) * 1973-03-31 1977-05-17 The Production Engineering Research Association Damping vibrations in sheet material
DE2708896A1 (de) * 1977-03-02 1978-09-07 Messerschmitt Boelkow Blohm Daempfungsbelag
DE2729290C3 (de) * 1977-06-29 1981-09-17 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Dämpfungsbelag zur Dämpfung von Körperschall

Also Published As

Publication number Publication date
US4353433A (en) 1982-10-12
EP0037997A1 (fr) 1981-10-21
DE3013861C2 (de) 1983-04-07
ATE6378T1 (de) 1984-03-15
DE3162339D1 (en) 1984-03-29
DE3013861A1 (de) 1981-10-15

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