RESEARCH OF SOUND INSULATION OF TRANSLUCENT VIBRODEMPFIROVANNY ELEMENTS I THE PROTECTING DESIGNS FROM THEM

Abstract

The results of investigations of the physico-mechanical characteristics of the layers of vibrodamped translucent elements and the parameters of fences from these elements on the sound-insulating capacity are presented. It is shown that in order to increase the sound insulation of translucent enclosures, it is possible to use as laminated elements layered structures consisting of glasses interconnected by translucent vibrodamping mastics. The performed analysis indicates significant reserves of a possible increase in sound insulation due to the purposeful design of translucent layered enclosures by appropriate selection of the parameters of layered elements and the physico-mechanical characteristics of the materials included in their composition. Investigations were carried out to assess the effect of the loss factor, the dynamic modulus of the vibration damping layer, and the dynamic modulus of elasticity of the outer layers on the sound insulation of layered translucent elements. An increase in the sound insulation of layered vibrodamped elements is shown in comparison with single-layered, equal in surface density, due to an increase in the loss factor and the displacement of the cut-off frequency of wave coincidence to the region of high frequencies.