[Retracted] Optimal Design of Honeycomb Beams with Unit Cell Structure Based on Multiobjective Optimization Algorithm

Table 1

Optimization result.

	Before optimization	After optimization
Total mass (kg)	2.9	2.4
Warping stiffness (N·m^4)	2.0 × 10^2	1.7 × 10^3
Torsional stiffness (N·m)	1.0 × 10^9	3.0 × 10^9
Natural frequency (Hz)	8 × 10^4	5.2 × 10^4