Calculation of radiated noise from cylinder block using finite element model
by K. Maekawa, S. Morita
International Journal of Vehicle Design (IJVD), Vol. 6, No. 2, 1985

Abstract: The work described in this paper was undertaken as part of a program aimed at predicting engine noise and vibration characteristics at the design stage. Initially, the operating engine test and artificial excitation test were carried out with a 4-cylinder, 1500cc gasoline engine. Through these tests, radiated noise and vibration characteristics of a cylinder block were investigated and noise controlling parameters, such as radiation efficiency, forcing functions and modal damping were examined. Finally, surface response level and radiated noise from the cylinder block were calculated using finite element model by combining noise controlling parameters obtained by the tests. As a result, there was a good correlation between calculated and experimental sound power. The technique presented in this paper is thought to be applicable to predict sound power at the design stage for practical purposes.

Online publication date: Sun, 25-May-2014

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