Position and Thickness Optimization of Ribs for Ventilation Covering Using the Micro Genetic Algorithm with an Interpolated Smooth Objective Function

Table 1

Optimization results of each method.

Evaluation index	Design parameters	Initial state	Fixed position; (gradient)	MGA; (step function)	MGA; (interpolated continuous function)
Design variables	Thickness (, mm)	10	9.244	9.043	7.062
	Thickness (, mm)	10	3.249	4.313	4.859
	Thickness (, mm)	10	3.249	4.983	3.496
	Thickness (, mm)	10	9.244	6.265	7.778
	Position set ()	(5, 8, 11, 14)	(5, 8, 11, 14)	(5, 8, 12, 14)	(5, 7, 12, 14)
Objective	Weight (, Mg)	0.195	0.122	0.119	0.113
Constraints	von Mises stress (σ, MPa); (<50.000 MPa)	33.430	45.400	49.100	49.930