Flexural Vibration Analysis of Nonuniform Double-Beam System with General Boundary and Coupling Conditions

Table 4

The first four dimensionless frequencies for the three-stepped beams.

BC
SS-SS	3.097	6.184	9.343	12.605
	3.096^a	6.184	9.343	12.605
SS-F	4.313	7.331	10.240	13.297
	4.313^a	7.331	10.240	13.297
C-C	4.536	7.663	10.808	14.068
	4.541^a	7.660	10.809	14.064
C-F	2.287	5.133	8.083	10.978
	2.285^a	5.133	8.083	10.978

^aResults from [25].