Flexural Free Vibrations of Multistep Nonuniform Beams

Table 6

Calculation results of natural frequencies of three-step simply supported beam.

Methods	Present (rad/s)	1D-FEM (rad/s)	2D-FEM (rad/s)	Relative error (%)
				1D-FEM	2D-FEM
1st	5.2110	5.2132	5.2089	0.0414	−0.0402
2nd	21.6022	21.5989	21.5683	−0.0155	−0.1571
3rd	50.2561	50.3032	50.1738	0.0938	−0.1638