Research Article
A Copula-Based and Monte Carlo Sampling Approach for Structural Dynamics Model Updating with Interval Uncertainty
Table 2
Comparison on the natural frequencies of plates between the simulation and the experimental results.
| Mode | Experimental interval/Hz | Original interval/Hz | Error /% | Updated interval/Hz | Error /% |
| 1 | [23.94 24.4] | [21.06 27.55] | [-12.05 12.92] | [23.71 24.44] | [-0.95 0.15] | 2 | [66.5 67.53] | [58.61 76.53] | [-11.86 13.32] | [66.84 67.83] | [-0.99 0.44] | 3 | [76.24 78.91] | [65.81 87.80] | [-13.68 11.26] | [75.93 78.67] | [-0.41 -0.30] | 4 | [131.31 133.03] | [116.34 151.62] | [-11.40 13.98] | [130.37 134.26] | [-0.71 0.92] | 5 | [156.31 160.94] | [135.12 179.67] | [-11.59 8.55] | [155.51 160.95] | [-0.51 0.01] | mean | | | [12.51 12.62] | | [0.72 0.24] |
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