MATF8
Bulk Data Entry Specifies frequencydependent material properties on MAT8 entry fields via TABLEDi entries.
Format
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

MATF8  MID  T(E1)  T(E2)  T(NU12)  T(G12)  T(G1Z)  T(G2Z)  T(RHO)  
T(A1)  T(A2)  T(Xt)  T(Xc)  T(Yt)  T(Yc)  T(S)  
T(GE)  T(F12) 
Example
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

MATF8  17  32  15  
52 
Definitions
Field  Contents  SI Unit Example 

MID  Material property identification number that
matches the identification number on the
MAT1 entry. (Integer > 0) 

T(E1)  A
TABLEDi or
TABLEMi
entry identification number for the Young's modulus 1. (Integer ≥ 0 or blank) 

T(E2)  A
TABLEDi or
TABLEMi
entry identification number for the Young's modulus 2. (Integer ≥ 0 or blank) 

T(NU12)  A
TABLEDi or
TABLEMi
entry identification number for the Poisson's ratio 12. (Integer ≥ 0 or blank) 

T(G12)  A
TABLEDi or
TABLEMi
entry identification number for shear modulus 12. (Integer ≥ 0 or blank) 

T(G1Z)  A
TABLEDi or
TABLEMi
entry identification number for transverse shear modulus 1Z. (Integer > 0 or blank) 

T(G2Z)  A
TABLEDi or
TABLEMi
entry identification number for transverse shear modulus 2Z. (Integer ≥ 0 or blank) 

T(RHO)  A
TABLEDi or
TABLEMi
entry identification number for mass density. (Integer ≥ 0 or blank) 

T(A1)  A
TABLEDi or
TABLEMi
entry identification number for the thermal expansion coefficient 1. 1 (Integer or blank) 

T(A2)  A
TABLEDi or
TABLEMi
entry identification number for the thermal expansion coefficient 2. (Integer or blank) 

T(Xt)  A
TABLEDi or
TABLEMi
entry identification number for the tension stress/strain limit 1. (Integer ≥ 0 or blank) 

T(Xc)  A
TABLEDi or
TABLEMi
entry identification number for compression stress/strain limit 1. (Integer ≥ 0 or blank) 

T(Yt)  A
TABLEDi or
TABLEMi
entry identification number for tension stress/strain limit 2. (Integer ≥ 0 or blank) 

T(Yc)  A
TABLEDi or
TABLEMi
entry identification number for compression stress/strain limit 2. (Integer ≥ 0 or blank) 

T(S)  A
TABLEDi or
TABLEMi
entry identification number for shear stress/strain limit. (Integer ≥ 0 or blank) 

T(GE)  A
TABLEDi or
TABLEMi
entry identification number for structural damping coefficient. (Integer ≥ 0 or blank) 

T(F12)  A
TABLEDi or
TABLEMi
entry identification number for TsaiWu interaction term. (Integer ≥ 0 or blank) 
Comments
 Fields 3, 4, and so on of this entry correspond, fieldbyfield, to fields 3, 4, and so on of the MAT8 entry referenced in field 2. The value in a particular field of the MAT8 entry is replaced or modified by the table referenced in the corresponding field of this entry. In the example shown, E1 is modified by TABLEDi 32; RHO is modified by TABLEDi 15; and GE is modified by TABLEDi 52.
 Blank or zero entries mean that there is no frequency dependence of the fields on the MAT8 entry. The MATF8 entries may refer to blank entries on the respective MAT8 card. In which case, they will be applied to default values of the respective parameters.
 In Modal Frequency Response Analysis, the frequencydependency is only used in the frequency response part of the solution, not in the modal analysis part of the solution.
 OptiStruct accepts both MATF8 and MAT8F 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, then the run errors out.
 This card is represented as a material in HyperMesh.