On board ships, to avoid high levels of structure-borne noise due to marine four strokes diesel engines, the latter are usually resiliently mounted. In order to improve the effectiveness of the decoupling between the diesel engines and the ship structures, it is important to have available tools and numerical models that simulate the dynamic behaviour of the isolator system as well as of the receiving structures. In the paper, after an introduction to the basics for the characterization of passive resilient mounts in high frequency range, an FE non-linear dynamic model of the isolator is presented. Such model takes into account the dynamics of the cast-iron parts, the contact between the top and base casting with the rubber core and the non-linear behaviour of the constitutive law of rubber. A procedure to achieve the characteristics parameters of rubbers is presented. The simulations have been then validated by experimental tests.

Numerical simulation of the dynamic behaviour of resilient mounts for marine diesel engines

MORO, LORENZO;BROCCO, EMANUELE;MENDOZA VASSALLO, PEDRO NICOLÁS;BIOT, MARCO;
2015

Abstract

On board ships, to avoid high levels of structure-borne noise due to marine four strokes diesel engines, the latter are usually resiliently mounted. In order to improve the effectiveness of the decoupling between the diesel engines and the ship structures, it is important to have available tools and numerical models that simulate the dynamic behaviour of the isolator system as well as of the receiving structures. In the paper, after an introduction to the basics for the characterization of passive resilient mounts in high frequency range, an FE non-linear dynamic model of the isolator is presented. Such model takes into account the dynamics of the cast-iron parts, the contact between the top and base casting with the rubber core and the non-linear behaviour of the constitutive law of rubber. A procedure to achieve the characteristics parameters of rubbers is presented. The simulations have been then validated by experimental tests.
9781138027893
9781315685052
http://www.crcnetbase.com/doi/book/10.1201/b18179
File in questo prodotto:
File Dimensione Formato  
Numerical simulation of the dynamic behaviour of resilient mounts for marine diesel engines.pdf

non disponibili

Descrizione: pdf capitolo pubblicato
Tipologia: Documento in Versione Editoriale
Licenza: Digital Rights Management non definito
Dimensione 1.06 MB
Formato Adobe PDF
1.06 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
frontespizio+indice.pdf

non disponibili

Descrizione: pdf frontespizio e indice
Tipologia: Documento in Versione Editoriale
Licenza: Digital Rights Management non definito
Dimensione 97.1 kB
Formato Adobe PDF
97.1 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2837171
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? ND
social impact