The Tensor Library

Abstract

The tensor library is a collection of 72 Fortran subroutines that handle several tensor operations useful in Damage Mechanics. The tensor library is called extensively by the DNA program to handle all the tensor operations. All tensors are assumed to have an index range of 1, 2, 3. All matrices are square of size 3×3 or 6×6 if full. The tensor library is available on the accompanying CD-ROM in three files, namely TENSOR.FOR, PRTL.FOR, and SXM.FOR. The subroutines are available for both single precision and double precision calculations. The following is a list of all the subroutines in the tensor library. Remove the letter “D” from the beginning of the name of each subroutine to use the single precision version; otherwise the double precision version will be used.