| Description | Type | Default |
|---|---|---|
|
Stiffness matrix factor diagonal tolerance. The ratios of terms on the diagonal of the stiffness matrix to the corresponding terms on the diagonal of the triangular factor are computed. If, for any row, this ratio is greater than FACTRATIOTOL, the matrix will be considered to be nearly singular (having mechanisms). If any diagonal terms of the factor are negative, the stiffness matrix is considered implausible (non-positive definite). The ratios greater than FACTRATIOTOL and less than zero and their associated external grid point identities will be output. If the matrix is non-positive definite or a singularity is detected, the program will then take appropriate action as directed by the model parameter SOLUTIONERROR. |
Real |
1.0E+5 |