Popescu D.

Demands pointed out by the industrial noise legislation become more and more restrictive. New regulations require that machinery be so designed that risks resulting from noise emission to be reduced to the lowest limit. More than that, low noise emission may be a favorable reason for the market success of the product. In these conditions, an important task for designers is to create low noise machines, with good acoustic characteristics over the whole period of their service life. The paper presents some aspects related to the assessment, in the design stage, of the noise emitted by machines and equipment. A simplified noise prediction method is presented. Having the 3D model of the product, developed with a solid modeling software, a noise evaluation can be performed, considering noise sources, propagation environment and virtual receiver position.