VSPRINC (Calculate Principal Values)
Utility Routine Interface
call vsprinc( nblock, s, eigVal, ndir, nshr )
Variables to Be Provided to the Utility Routine
- s(nblock,ndir+nshr)
Stress or strain symmetric tensor.
- nblock
Number of material points to be processed in this call to VSPRINC.
- ndir
Number of direct components in the symmetric tensor.
- nshr
Number of shear components in the symmetric tensor.
Variables Returned from the Utility Routine
- eigVal(nblock,I), I=1,2,3
The three principal values in an unsorted order.