JME_V6_N2_RP3 R.J.V. Anil Kumar Y. Venkata Mohana Reddy K. Prahlada Rao Journal on Mechanical Engineering 2249 - 0744 6 2 17 22 SDM, Natural Frequency, Model Updating This paper deals with evaluation of the natural frequencies of a cantilever beam with fixed dimensions and material. The necessary boundary conditions are applied and the natural frequencies are evaluated by 3 methods viz a) analytically, by using relevant formulae, b) by using the concepts of FEM and MATLAB software, and c) by experimental analysis. There will be a discrepancy in the above values of the natural frequencies. The experimental value is taken as a benchmark and the deviation of the value by analytical and FEM methods are minimized or the dynamic characteristics of the beam structure are improved by employing the principles of Structural Dynamic Modification (SDM). Model updating is one of the techniques of SDM used to converge the values of the natural frequencies closer to the experimental value. February - April 2016 Copyright © 2016 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=4888