A Multimode Approach to Geometrically Nonlinear Free and Forced Vibrations of Multistepped Beams

Table 10

The percentage correction between the curvatures estimated via the linear and nonlinear theories. Maximum nondimensional amplitudes ().

Beam	Curvature
		Nonlinear	Linear	Percentage correction (%)
(a)	0	45.555	38.667	8.88
	0.2	4.499	7.074	36.39
	0.5	−26.518	−29.478	10.04
(b)	0	30.594	27.536	11.107
	0.25	27.956	36.778	23.988
	0.5	−42.4	−44.314	4.3196
(c)	0	37.345	33.303	12.137
	0.25	5.931	14.606	59.391
	0.5	−32.104	−35.288	9.022