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.

ModeExperimental interval/HzOriginal interval/HzError /%Updated interval/HzError /%

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]