Soderberg Method Fatigue Curve Equation

Strength and Mechanics of Materials

Soderberg Equation Method for Fatigue

Where:
	= Amplitude of normal (shear) stress [MPa,psi]
	= Endurance limit at constant strength [MPa,psi]
	= Mean cycle stress [MPa,psi]]
	= Yield tensile strength [MPa,psi]
	= Yield tensile strength [MPa,psi]
	= Yield shear strength [MPa,psi] when SYS .577 SY