Simply supported beam evaluations

SSbeam.m computes simply-supported or Pinned-pinned beam mode shapes & natural frequencies

% HELP: This script computes mode shapes and corresponding natural
% frequencies of the simply-supported beam by user specified mechanical
% properties and size of the beam.
% Prepare the followings:
% - Material properties of the beam, viz. density (Ro), Young's modulus (E)
% - Specify a cross section of the beam, viz. square,rectangular, circular
% - Geometry parameters of the beam, viz. Length, width, thickness
% - How many natural frequencies and mode shapes to evaluate.