Genetic Approach for Multiobjective Optimization of Epicyclical Gear Train

Table 1

Description of parameters and variables [25, 26].

Parameters	Symbol	Coefficient value
Tooth width	b	[12 120]
Module	m	[2 20]
Tooth number of sun gear		[17 30]
Tooth number of planet gear		[17 50]
Diameter of sun shaft		[10 30]
Diameter of planet shaft		[10 40]
Input power	P	7.5
Input speed	n	1500
Density material of standard steel	ρ	7850
Helix angle factor	Zβ	1
Elastic coefficient	ZE	189.98
Contact ratio coefficient	Zɛ	0.94
Product of load factor	Ki	1.75
Tooth form factor	YFa	2
Stress concentration coefficient	YSa	1.73
Contact ratio coefficient	Yɛ	1.08
Allowable contact stress		1100
Allowable bending stress		460
Allowable shearing stress of shafts	γ	30.67