VIBRATION ATTENUATION IN A PERIODIC ROTATING TIMOSHENKO BEAM

ALAA EL-DIN, MAGED; TAWFIK, MOHAMMAD

doi:10.21608/asat.2007.24380

VIBRATION ATTENUATION IN A PERIODIC ROTATING TIMOSHENKO BEAM

Document Type : Original Article

Authors

MAGED ALAA EL-DIN ¹
MOHAMMAD TAWFIK ²

¹ Graduate Student, Vibration and Acoustics Control Centre, Noon for Researches and Developments, www.noonrd.org, Cairo, Egypt.

² Assistant Professor, Modelling & Simulation in Mechanics Department, Faculty of Engineering & Material Science, German University in Cairo, New Cairo City, Egypt.

10.21608/asat.2007.24380

Abstract

In this study we investigate the effect of abrupt geometric discontinuities on the vibration of a Timoshenko rotating beam. The beam model is created using finite element code developed on MATLAB. Stop and pass bands are identified using periodic analysis for single cell. The results are verified using published data. Numerical results indicate the effectiveness of such structure configuration on vibration attenuation.

Keywords