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

Table 1

Results of maximization the first natural frequency of the 2D cantilever beam.

Method	Design iterations	Total SI iterations	Total BCAS iterations	Objective value	MAC value	CPU times (sec.)
Exact method	54	223	0	77.09		129.6
Proposed method	53	86	130	76.35	0.982	83.9