Sandwich structure having a frequency-selective double-wall...

Details Sandwich structure having a frequency-selective double-wall... Sandwich structure having a frequency-selective double-wall...

G - Physics

10

K

G10K 11/168 (2006.01) B61D 17/18 (2006.01) E04B 1/86 (2006.01)

Patent

CA 2609510

The invention relates to a sandwich structure (1, 10) which comprises a core (2, 20) and cover layers (3, 4, 30, 40) disposed on both sides of the core (2, 20). Said core (2, 20) is provided with core recesses (5, 50) which are dimensioned in such a manner that the acoustic behavior of the sandwich structure (1, 10) in the area of the core recesses (5, 50) corresponds to the acoustic behavior of a double wall while at the same time maintaining the global acoustic behavior of the sandwich structure (1, 10).

L'invention concerne une structure sandwich (1,10) comprenant un noyau (2,20) et de chaque côté du noyau (2,20) des couches de couverture (3,4,30,40). Le noyau (2,1) comporte des évidements (5,50) dimensionnés de manière que le comportement acoustique de la structure sandwich (1,10), dans la zone des évidements (5,50), correspond au comportement acoustique d'une double paroi, le comportement acoustique global de la structure sandwich (1,10) étant simultanément conservé.

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