Material Property Checks for MAT9
MAT9 only applies to 3D elements.
| Material Requirements | MAT9 |
|---|---|
| Mathematical | none |
| Semi-stability | If any eigenvalues of [G]
< 0, an error termination will occur. PARAM ,CHECKMAT,NO will disable this error. |
| Not all zeros | If all eigenvalues of [G]
= 0, an error termination will occur. If any eigenvalue of [G] = 0, a warning is provided. |
| Consistency | none |