is a symmetric tensor, the eigenvectors of 
give principal directions and eigenvalues give the maximum, intermediate or
minimum values. Note that three invariants 
4.5 Principal Stresses
Previous: 4.4 Symmetry of Stress Tensor
Since
is a symmetric tensor, the eigenvectors of
give principal directions and eigenvalues give the maximum, intermediate or
minimum values. Note that three invariants
10/19/99 0:45:02