Research Article
Free Vibration Analysis of Symmetrically Laminated Folded Plate Structures Using an Element-Free Galerkin Method
Table 6
Dimensionless free vibration frequencies of the cantilevered twofold laminated plate with the lamination scheme (−45°/45°/−45°/45°/−45°…)10.
| | Crank angle | Modes | Present results | ANSYS results | Relative errors |
| | = 90° | 1 | 5.55864 | 5.53036 | 0.51% | | 2 | 6.01129 | 5.98305 | 0.47% | | 3 | 13.3613 | 13.2764 | 0.64% | | 4 | 16.8974 | 16.755 | 0.85% | | 5 | 18.1847 | 18.02859 | 0.87% |
| | = 150° | 1 | 5.55885 | 5.51233 | 0.84% | | 2 | 5.9971 | 5.94399 | 0.89% | | 3 | 13.4186 | 13.21197 | 1.56% | | 4 | 16.8014 | 16.59041 | 1.27% | | 5 | 17.9625 | 17.78489 | 1.00% |
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