CALCULATION OF NOISE EMISSION FROM MOVING LINEAR SOURCES

BERECHNUNG DER LAERMIMMISSION VON BEWEGTEN LINIENQUELLEN

IN AN IDEAL LINEAR SOURCE, NOISE PROPAGATION TAKES PLACE IN CYLINDRICAL WAVE FRONTS IN WHOSE CENTRAL AXIS THERE IS AN INFINITELY LONG COHERENTLY RADIATING LINEAR SOURCE. MULTI-AXLE RAIL VEHICLES, AND ALSO COLUMNS OF CARS, FORM A LINEAR TYPE OF SOUND SOURCE, WHICH DIFFER FROM THE MODEL OF THE IDEAL SOURCE OF SOUND BY A FINITE LENGTH L AND BY INCOHERENT EMISSION. THE DAMPING BEHAVIOUR OF THESE REAL LINEAR SOURCES IS DERIVED BY CALCULATION, AND FORMULAE AND ACCOMPANYING GRAPHS ARE SHOWN. FINALLY THE TIME BEHAVIOUR OF REALISTIC LINE SOURCES IS DERIVED. THE DERIVED FORMULAE AS WELL AS THE GRAPHS SHOWN PERMIT A RAPID DETERMINATION OF THE EXPECTED NOISE EMISSION OF LINEAR TYPE SOUND SOURCES.

Language

  • German

Media Info

  • Pagination: 105-9
  • Serial:
    • Kampf dem Laerm
    • Volume: 24
    • Issue Number: 4
    • Publisher: VJF Lehmanns Verlag
    • ISSN: 0022-8249

Subject/Index Terms

Filing Info

  • Accession Number: 01301049
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Files: ITRD
  • Created Date: Nov 21 2010 8:06AM