Modeling and Stochastic Model Updating of Bolt-Jointed Structure

Table 5

Experimental and updated results of plate 2.

Mode shape	Experimental frequencies (Hz)		Experimental modal damping (%)		Updated frequencies (Hz)		Updated modal damping (%)
	Mean	SD	Mean	SD	Mean	SD	Mean	SD
First bending	48.66	0.696	0.0498	0.0046	48.81	0.565	0.0483	0.0034
First torsion	135.98	1.471	0.0505	0.0050	134.44	1.599	0.0483	0.0039
Third bending	264.21	3.486	0.0508	0.0051	263.48	3.320	0.0478	0.0046
Second torsion	277.26	3.127	0.0504	0.0049	276.34	3.330	0.0490	0.0042
Third torsion	603.39	7.247	0.0495	0.0050	603.47	8.373	0.0498	0.0062
Forth torsion	654.54	8.414	0.0470	0.0063	653.97	9.132	0.0484	0.0050