Research Article
On the Finite Element Model of Rotating Functionally Graded Graphene Beams Resting on Elastic Foundation
Table 1
First three nondimensional fundamental frequencies
of the beam subjected to the axial load
.
| Boundary condition | Vibration mode | Exact [45] | Exact [46] | FEM with 8 elements [47] | This work | 4 elements | 6 elements | 8 elements | 10 elements | 12 elements |
| S-S | 1 | 6.24 | — | 6.24 | 6.247 | 6.243 | 6.242 | 6.242 | 6.241 | 2 | 36.40 | — | 36.41 | 36.505 | 36.402 | 36.383 | 36.377 | 36.375 | 3 | 85.81 | — | 85.93 | 61.891 | 85.924 | 85.768 | 85.721 | 85.703 |
| S-C | 1 | — | 13.01 | 13.01 | 13.018 | 13.006 | 13.003 | 13.003 | 13.003 | 2 | — | 47.35 | 47.38 | 47.493 | 47.356 | 47.323 | 47.313 | 47.309 | 3 | — | 101.54 | 101.73 | 101.053 | 101.630 | 101.450 | 101.384 | 101.358 |
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