Effect of Flap Position on Transverse Vibration of Rectangular Plate with Cutout

Abstract

The present work deals with the analysis of transverse vibration of a clamped rectangular plate with cutout using vibratory flap subjected to harmonic excitation. Vibratory flap is an auxiliary plate, which can vibrate independently when it is attached on the main plate as a cantilever plate. The vibratory flap acts as a dynamic vibration absorber which reduces the vibration of the plate at tuning and higher frequencies. This study attempts to discover the effect of flap position on transverse vibration of rectangular plate with cut-out. Analysis has been carried out for different combinations of flap position and cutout locations through finite element analysis using ANSYS software. From the analysis it was found that the flap position plays a significant role in vibration control of plate. The vibration of the plate was reduced by 83% and 75% respectively in first and second frequencies in the presence of cutout and flap when compared with the uncut plate. This shows improved dynamic response of the plate in the presence of flap.