An Efficient Reanalysis Method for Topological Optimization of Vibrating Continuum Structures for Simple and Multiple Eigenfrequencies

Table 3

Results of maximization the second natural frequency of the 3D clamped square plate.

Method	Design iterations	Total SI iterations	Total BCAS iterations	Objective value	MAC value	CPU times (sec.)
Exact method	31	122	0	177.89		2428.5
Proposed method	28	63	43	175.95	0.996	1652.0