Structural Dynamic Modification of a Cantilever Beam using Model Updating Method

Vol. 6  Issue 2
Year: 2016
Issue:Feb-Apr
Title:Structural Dynamic Modification of a Cantilever Beam using Model Updating Method
Author Name:R.J.V. Anil Kumar, Y. Venkata Mohana Reddy and K. Prahlada Rao
Synopsis:

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.