Research Article
Isomap-Based Three-Dimensional Operational Modal Analysis
Table 7
Comparison of modal frequencies at different dimensions.
| | FEA method | LSMS method | | |
| | Real order | Real frequencies | Identify order | Frequencies | Order | Frequencies | | 1 | 1054.9 | 2 | 1059 | 2 | 1059 | | 2 | 1145.7 | 1 | 1145 | 1 | 1145 | | 3 | 1239.6 | 3 | 1237 | 3 | 1237 | | 4 | 1441.9 | 4 | 1441 | 4 | 1441 | | 5 | 1740.0 | 6 | — | 6 | — | | 7 | 1871.7 | 5 | 1874 | 5 | 1874 |
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