Users:General FEM Analysis/Materials Reference/Tsai-Wu Failure Criterion

General Description

It is a practically simple failure criterion which takes interaction of stresses in different directions into account by making use of strength tensors. It is considerably cheaper in computational effort compared to Puck criterion especially in 3D stress states. A drawback of this criterion is that it is based on von Mises criterion which is more suitable for ductile materials. 2D and 3D formulations are implemented into Carat++. As it can not distinguish between different fracture modes, Tsai-Wu Criterion returns one failure index for corresponding failure analysis.