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

Table 2

The optimal solution using MGA with an interpolated continuous objective function.

Evaluation index	Design parameters	Initial state	MGA; (interpolated continuous function)
Design variables	Thickness (, mm)	20	12.478
	Thickness (, mm)	20	25.825
	Thickness (, mm)	20	6.445
	Girder position set	(2, 5, 8)	(3, 4, 9)
Objective	Weight (, Mg)	94.293	69.192
Constraints	von Mises stress; (<119.67 MPa)	118.993	119.46
	Lateral displacement; (<53.000 mm)	52.701	52.453
	1st frequency; (>10.5000 Hz)	10.526	10.526