S1602-2-3 Self-Excited Vibrations Generated on a Thin Film Supported by an Air Turn Bar with three slits

Abstract

This paper deals with an experimental study of self-excited vibrations generated on a thin film supported by an air tum bar with three slits. We examined circumferential pressure distribution of the air tum bar by measuring the pressure in a narrow gap between the air tum bar and the film experimentally. This study shows characteristics of the self-excited vibrations. As a result, there are two types of self-excited vibrations generated on the film. The self-excited vibrations are strongly coupled with fluctuating pressure. We discussed excitation mechanism of the self-excited vibrations of the film supported by the air tum bar.