FR2433217A2 - Reduction du bruit par resonateurs entraines en oscillation - Google Patents

Reduction du bruit par resonateurs entraines en oscillation

Info

Publication number
FR2433217A2
FR2433217A2 FR7920199A FR7920199A FR2433217A2 FR 2433217 A2 FR2433217 A2 FR 2433217A2 FR 7920199 A FR7920199 A FR 7920199A FR 7920199 A FR7920199 A FR 7920199A FR 2433217 A2 FR2433217 A2 FR 2433217A2
Authority
FR
France
Prior art keywords
wall elements
oscillation
noise reduction
thickness
vacuum
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
Application number
FR7920199A
Other languages
English (en)
Other versions
FR2433217B2 (fr
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
Publication of FR2433217A2 publication Critical patent/FR2433217A2/fr
Application granted granted Critical
Publication of FR2433217B2 publication Critical patent/FR2433217B2/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Vibration Prevention Devices (AREA)
  • Microwave Tubes (AREA)

Abstract

Résonateurs à volume variable selon le brevet principal constitués par un volume en dépression formé par des éléments de paroi suivant le principe des rondelles Belleville, ces éléments présentant une faible constante de rappel en cas de dépression. Les éléments de paroi 1 présentent, au niveau de leur bord, un coude 2 et sont bombés en forme de cône, de sphère ou selon une surface de rang supérieur et ont une hauteur de bombement h de 0,5 à 5 fois l'épaisseur des éléments de paroi ainsi qu'un diamètre d de 30 à 300 fois l'épaisseur desdits éléments de paroi.
FR7920199A 1978-08-09 1979-08-07 Reduction du bruit par resonateurs entraines en oscillation Granted FR2433217A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2834823A DE2834823C2 (de) 1978-08-09 1978-08-09 Volumenändernde Resonatoren nach dem Tellerfeder-Prinzip

Publications (2)

Publication Number Publication Date
FR2433217A2 true FR2433217A2 (fr) 1980-03-07
FR2433217B2 FR2433217B2 (fr) 1984-08-17

Family

ID=6046556

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7920199A Granted FR2433217A2 (fr) 1978-08-09 1979-08-07 Reduction du bruit par resonateurs entraines en oscillation

Country Status (4)

Country Link
DE (1) DE2834823C2 (fr)
FR (1) FR2433217A2 (fr)
GB (1) GB2028049B (fr)
IT (1) IT1162762B (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2947026C2 (de) * 1979-11-22 1981-10-01 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Silatoren zur Lärmreduzierung
DE2947256C2 (de) * 1979-11-23 1984-09-13 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Einrichtung zur Reduzierung des Auspuff- bzw. Abgaslärmes
DE3020849A1 (de) * 1980-06-02 1981-12-17 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Schallschirme mittels resonatoren, insbesondere silatoren
DE3020830A1 (de) * 1980-06-02 1981-12-10 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Koinzidenzschalldaempfer
DE3241932A1 (de) * 1982-11-12 1984-05-17 Transformatoren Union Ag, 7000 Stuttgart Transformator mit oelgekuehltem aktivteil und schalldaempfenden resonatoren
DE3347827A1 (de) * 1983-05-10 1985-03-07 Metzeler Kautschuk GmbH, 8000 München Mitschwingender, volumenaendernder resonator in form eines silators
DE3317103C2 (de) * 1983-05-10 1986-08-07 Metzeler Kautschuk GmbH, 8000 München Mitschwingender, volumenändernder Resonator in Form eines Silators
DE3330471A1 (de) * 1983-08-24 1985-03-14 Metzeler Kautschuk GmbH, 8000 München Mitschwingender, volumenaendernder resonator in form eines silators
SE441317B (sv) * 1984-02-14 1985-09-23 Asea Ab Ljuddempande anordning
US5241512A (en) * 1991-04-25 1993-08-31 Hutchinson 2 Acoustic protection material and apparatus including such material
ES2038957T1 (es) * 1991-04-25 1993-08-16 Hutchinson Material de proteccion acustica y dispositivo que incorpora dicho material.
FR2750527B1 (fr) † 1996-06-28 1998-08-21 Bertin & Cie Structures d'absorption de bruit et parois constituees de ces structures
DE19802359C2 (de) * 1998-01-22 2001-09-13 Oskar Bschorr Verfahren zur Schwingungsdämmung oder -aktivierung und Negativfeder hierfür
DE19816092A1 (de) * 1998-05-12 1999-11-18 Coldewey Maik Schalldämpf-Resonatorelement für Überdrucksysteme
DE19821067C1 (de) * 1998-05-12 1999-11-11 Coldewey Maik Volumenänderndes Resonatorelement und Verfahren zu seiner Herstellung
GB0304867D0 (en) * 2003-03-04 2003-04-09 Rickards M J A sound barrier vacuum panel
JP7310120B2 (ja) * 2018-11-05 2023-07-19 ヤマハ株式会社 吸音構造体
DE102021000670A1 (de) 2021-02-09 2022-08-11 Thilo Tollkühn Paneele zur Schalldämpfung und zur Schalldämmung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502017A (en) * 1943-12-27 1950-03-28 Rca Corp Suspension means for acoustical absorbers
AU2494471A (en) * 1970-02-04 1972-08-10 Keithroy Morrison Noise suppression means for use on pneumatic tools, machinery and in building construction
DE2235452A1 (de) * 1972-07-20 1974-01-24 Robert Dipl Chem Freund Verfahren zur schallabsorption durch volumenaendernde gase

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2502017A (en) * 1943-12-27 1950-03-28 Rca Corp Suspension means for acoustical absorbers
AU2494471A (en) * 1970-02-04 1972-08-10 Keithroy Morrison Noise suppression means for use on pneumatic tools, machinery and in building construction
DE2235452A1 (de) * 1972-07-20 1974-01-24 Robert Dipl Chem Freund Verfahren zur schallabsorption durch volumenaendernde gase

Also Published As

Publication number Publication date
FR2433217B2 (fr) 1984-08-17
DE2834823C2 (de) 1980-07-17
GB2028049A (en) 1980-02-27
IT1162762B (it) 1987-04-01
GB2028049B (en) 1982-11-24
DE2834823B1 (de) 1979-10-25
IT7924674A0 (it) 1979-07-26

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