For orthotropic materials with three planes of symmetry oriented with the coordinate directions, if we assume that $${\displaystyle F_{ij}=F_{ji}}$$ and that there is no coupling between the normal and shear stress … See more

• Material failure theory
• Yield (engineering) See more

For a transversely isotropic material, if the plane of isotropy is 1–2, then
$${\displaystyle F_{1}=F_{2}~;~~F_{4}=F_{5}=F_{6}=0~;~~F_{11}=F_{22}~;~~F_{44}=F_{55}~;~~F_{13}=F_{23}…
Then the Tsai–Wu … See more

The Tsai–Wu failure criterion has also been applied to trabecular bone/cancellous bone with varying degrees of success. The quantity $${\displaystyle F_{12}}$$ has … See more