Page 245 - Biaxial Multiaxial Fatigue and Fracture

Fatigue Analysis of Multiaxially Loaded Components with the FE-Postprocessor FEMFAT-MAX 229

rfr
Point 2: r, =rue -- (7)
2

5
2
Point 3: r, =-ru --
6 3rp

The points 6, 7, 8 and 9 are symmetric to 4, 3,2 and 1. Therefore the same relations (6)-(9) are
valid with inverse sign for rm. Point 3 has been placed on the centre of gravity of a triangle,
spanned by the points 2, 4 and the point of intersection of the lines rp,, =rp and
‘gm = Two - ‘m *

J I
-600 -700 -6W -500 -400 -3CQ -2W -100 0 iw mo 3w
- %,,c %s,t
Fig. 7. Haigh-diagram for grey cast iron for tensiodcompression loading.

LczIIll

-330 9 -m -lW 0 IM mo
- %s LIS
Fig. 8. Haigh-diagram for grey cast iron for shear loading.