Research Article

Spectral Representation of Uncertainty in Experimental Vibration Modal Data

Table 2

The coefficients of the gPC expansions approximating the measured uncertain natural frequencies.


115 145 275 396 504530 566 704781
4.53 5.87 8.72 15.18 11.90 15.3614.53 17.7824.32
0.37 0.361.350.740.332.953.48 1.88 6.40