Flexural Free Vibrations of Multistep Nonuniform Beams

Table 5

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

Methods	Present (rad/s)	1D-FEM (rad/s)	2D-FEM (rad/s)	Relative error (%)
				1D-FEM	2D-FEM
1st	5.7666	5.7712	5.7570	0.0805	−0.1656
2nd	25.1551	25.1761	25.1157	0.0838	−0.1566
3rd	57.1504	57.2114	56.9501	0.1068	−0.3490