Page 179 - Biaxial Multiaxial Fatigue and Fracture
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164 1 LIU AND H. ENNER
Appendix: NOMENCLATURE
coefficients of SIH
static yield strength of 0.2% plastic strain
phase differences to ox
frequency ratio to ox
exponents of SIH
mean stresses
stress amplitude
fatigue limit for normal stress
equivalent stress amplitude
equivalent mean stresses
fatigue limit (double amplitude) for pulsating tension
fatigue limit for alternating tensiontompression
normal stress amplitude in the intersection plane p
mean normal stress in the intersection plane p
fatigue limit for pulsating torsion (double ampIitude)
fatigue limit for shear stress
fatigue limit for alternating torsion
shear stress amplitude in the intersection plane w
mean shear stress in the intersection plane p
