Efficient Midfrequency Analysis of Built-Up Structure Systems with Interval Parameters

Table 3

The relative errors of the bounds of the plate energy and the autospectra of the mass displacements yielded by S-SIPFEM/SEA with different subinterval numbers ( Hz).

	The number of subintervals	Lower bounds			Upper bounds
		MCS	S-SIPFEM/SEA	Relative errors (%)	MCS	S-SIPFEM/SEA	Relative errors (%)
(J)	1
	2
	4
	8
(m^2)	1
	2
	4
	8