WO2012175280A3 - Method and apparatus for determining the passage of audible sound energy through a double-wall structure - Google Patents

Method and apparatus for determining the passage of audible sound energy through a double-wall structure Download PDF

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Publication number
WO2012175280A3
WO2012175280A3 PCT/EP2012/059704 EP2012059704W WO2012175280A3 WO 2012175280 A3 WO2012175280 A3 WO 2012175280A3 EP 2012059704 W EP2012059704 W EP 2012059704W WO 2012175280 A3 WO2012175280 A3 WO 2012175280A3
Authority
WO
WIPO (PCT)
Prior art keywords
double
wall
wall structure
passage
determining
Prior art date
Application number
PCT/EP2012/059704
Other languages
German (de)
French (fr)
Other versions
WO2012175280A2 (en
Inventor
Alexander Peiffer
Original Assignee
Eads Deutschland Gmbh
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 Eads Deutschland Gmbh filed Critical Eads Deutschland Gmbh
Publication of WO2012175280A2 publication Critical patent/WO2012175280A2/en
Publication of WO2012175280A3 publication Critical patent/WO2012175280A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation
    • G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
    • 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
    • G10K15/00—Acoustics not otherwise provided for
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
    • G06F2119/10—Noise analysis or noise optimisation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • Geometry (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

The invention relates to a method for determining the passage of audible sound energy through a double-wall structure which comprises a first wall, a second wall and a double-wall space in between. In order to take the double-wall effect into consideration with lower computational complexity and more precisely, the following steps are proposed: a) abstraction of the double-wall structure as a double-wall model by splitting into a plurality of subsystems which are formed from a volume of fluid representing the double-wall space and at least one mass layer which represents the walls, which adjoins the volume of fluid and which corresponds to the mass of the wall, b) calculation of the complex eigen modes for the subsystems, c) calculation of the modal impedance matrix for the introduction of sound into the connected subsystems, and d) calculation of the coupling loss factor for the double-wall structure.
PCT/EP2012/059704 2011-06-10 2012-05-24 Method and apparatus for determining the passage of audible sound energy through a double-wall structure WO2012175280A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011103958.2 2011-06-10
DE102011103958A DE102011103958A1 (en) 2011-06-10 2011-06-10 Method and device for determining the passage of acoustic sound energy through a double wall structure

Publications (2)

Publication Number Publication Date
WO2012175280A2 WO2012175280A2 (en) 2012-12-27
WO2012175280A3 true WO2012175280A3 (en) 2013-04-04

Family

ID=46168457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/059704 WO2012175280A2 (en) 2011-06-10 2012-05-24 Method and apparatus for determining the passage of audible sound energy through a double-wall structure

Country Status (2)

Country Link
DE (1) DE102011103958A1 (en)
WO (1) WO2012175280A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115586251B (en) * 2022-09-01 2023-06-02 哈尔滨工程大学 A test method for coupling loss factor of typical ship structures

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6090147A (en) 1997-12-05 2000-07-18 Vibro-Acoustics Sciences, Inc. Computer program media, method and system for vibration and acoustic analysis of complex structural-acoustic systems

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANDREAS ZEITLER: "Untersuchung der Hubschrauberinnenakustik mittels der Methode der statistischen Energieanalyse", 6 November 2006 (2006-11-06), München, XP002688871, Retrieved from the Internet <URL:http://d-nb.info/985152559/34> [retrieved on 20061106] *
JORDI POBLET-PUIG: "Numerical modelling of soundtransmission in lightweight structures", 31 January 2008 (2008-01-31), XP002688870, Retrieved from the Internet <URL:http://www.lacan.upc.edu/sites/default/files/PobletPuig_PhD_Document_0.pdf> [retrieved on 20080131] *

Also Published As

Publication number Publication date
WO2012175280A2 (en) 2012-12-27
DE102011103958A1 (en) 2012-12-13

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