Free Vibration Analysis of Symmetrically Laminated Folded Plate Structures Using an Element-Free Galerkin Method

Table 7

Dimensionless free vibration frequencies of the cantilevered tub structure with the lamination scheme (0°/90°/90°/0°).

Modes	Present results	ANSYS results	Relative errors
1	9.14727	9.126463	0.23%
2	9.14957	9.126797	0.25%
3	14.1263	14.06026	0.47%
4	23.6554	23.53825	0.50%
5	31.4647	31.43285	0.10%