Page 256 - Biaxial Multiaxial Fatigue and Fracture

240 C. GAIER AND H. DANNBAUER

Fatigue notch factor
Stress concentration factor
Unit normal vector of a plane
Unit normal vector of the critical plane
Normal stress component of S,

Normal stress component of Sn,d
Stress ratio
Safety factor against fatigue limit for direction d inclined by 6 to the
plane’s normal n
Sensitivity of multiaxiality
Stress vector in the plane specified by its unit normal vector n
Stress component in direction d of stress vector acting on plane n
Time
Shear stress component of Sn

Shear stress component of s,d
Polar angle spanned by n and d
Normal stress
Maximum principal stress
Minimum principal stress
Alternating tensiodcompression fatigue limit

Tensiodcompression fatigue limit including mean stress influence
Fatigue limit for direction d inclined by 6 to the plane’s normal n
Mean tensiodcompression stress

Compession ultimate strength
Tension ultimate strength
Shear stress
Alternating shear fatigue limit

Shear fatigue limit including mean stress influence
Mean shear stress
Shear ultimate strength