MATF2
Bulk Data Entry Specifies frequency-dependent material properties on MAT2 entry fields via TABLEDi entries.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| MATF2 | MID | T(G11) | T(G12) | T(G13) | T(G22) | T(G23) | T(G33) | T(RHO) | |
| T(A1) | T(A2) | T(A3) | T(GE) | T(ST) | T(SC) | T(SS) |
Example
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| MATF2 | 17 | 32 | 15 | 44 | |||||
| 62 |
Definitions
| Field | Contents | SI Unit Example |
|---|---|---|
| MID | Material property identification number that
matches the identification number on the
MAT2 entry. (Integer > 0) |
|
| T(Gij) | A
TABLEDi or
TABLEMi
entry identification number for the shear modulus. (Integer ≥ 0 or blank) |
|
| T(RHO) | A
TABLEDi or
TABLEMi
entry identification number for the mass density. (Integer ≥ 0 or blank) |
|
| T(Ai) | A
TABLEDi or
TABLEMi
entry identification number for the thermal expansion coefficient. (Integer or blank) |
|
| T(GE) | A
TABLEDi or
TABLEMi
entry identification number for the damping coefficient. (Integer ≥ 0 or blank) |
|
| T(ST) | A
TABLEDi or
TABLEMi
entry identification number for the tension stress limit. (Integer ≥ 0 or blank) |
|
| T(SC) | A
TABLEDi or
TABLEMi
entry identification number for the compression limit. (Integer ≥ 0 or blank) |
|
| T(SS) | A
TABLEDi or
TABLEMi
entry identification number for the shear limit. (Integer ≥ 0 or blank) |
Comments
- Fields 3, 4, and so on of this entry correspond, field-by-field, to fields 3, 4, and so on of the MAT2 entry referenced in field 2. The value in a particular field of the MAT2 entry is replaced or modified by the table referenced in the corresponding field of this entry. In the example shown, G11 is modified by TABLEDi 32; G33 is modified by TABLEDi 15; RHO is modified by TABLEDi 44 and GE is modified by TABLEDi 62. Blank or zero entries mean that there is no frequency dependence of the field on the MAT2 entry.
- The MATF2 entries may refer to blank entries on the respective MAT2 card. In this case, they will be applied to default values of respective parameters.
- In Modal Frequency Response Analysis, the frequency-dependency is only used in the frequency response part of the solution, not in the modal analysis part of the solution.
- OptiStruct accepts both MATF2 and MAT2F for this entry.
- A matching TABLEDi ID is checked first, and if no such entry exists, a TABLEMi ID match is checked. If a matching table ID does not exist for both entries, the run errors out.
- This card is represented as a material in HyperMesh.