In this paper a multibody calculation methodology has been applied to the vibration analysis of a 4-cylinder 4-stroke diesel power plant supercharged; then a numerical-experimental correlation of results has been performed. The influence of crankshaft torsional and bending frequencies on the rotational speed behaviour and on engine support brackets vibration has been evaluated in order to reduce vibration phenomena and, therefore, noise transmission into car. The analysis was conducted using a multibody model created with the software AVL/EXCITE. Further validation through experimental acquisitions has been carried out, obtaining good results for the more interesting parameters, such as the irregular motion.
Analisi numerica con tecniche multibody delle vibrazioni di un motopropulsore automobilistico / Armentani, Enrico; I., Cascella; Fioretto, Giuseppe; G., Imparato; M., Pirelli. - ELETTRONICO. - (2010), pp. 1-11. (Intervento presentato al convegno XXXIX Congresso Nazionale AIAS tenutosi a Maratea (Pz) nel 7–10 Settembre 2010).
Analisi numerica con tecniche multibody delle vibrazioni di un motopropulsore automobilistico
ARMENTANI, ENRICO;FIORETTO, GIUSEPPE;
2010
Abstract
In this paper a multibody calculation methodology has been applied to the vibration analysis of a 4-cylinder 4-stroke diesel power plant supercharged; then a numerical-experimental correlation of results has been performed. The influence of crankshaft torsional and bending frequencies on the rotational speed behaviour and on engine support brackets vibration has been evaluated in order to reduce vibration phenomena and, therefore, noise transmission into car. The analysis was conducted using a multibody model created with the software AVL/EXCITE. Further validation through experimental acquisitions has been carried out, obtaining good results for the more interesting parameters, such as the irregular motion.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
