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MAT2 |
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MAT2 |
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»Click here to display Table of Contents«
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MAT2 |
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MAT2 |
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Bulk Data Entry
MAT2 – Material Property Definition, Form 2
Defines the material properties for linear, temperature-independent, and anisotropic materials for two-dimensional elements.
Format
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
MAT2 |
MID |
G11 |
G12 |
G13 |
G22 |
G23 |
G33 |
RHO |
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A1 |
A2 |
A12 |
TREF |
GE |
ST |
SC |
SS |
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Field |
Contents |
MID |
Unique material identification number. No default (Integer > 0) |
Gij |
Material property matrix. No default (Real) |
RHO |
Mass density. Used to automatically compute mass for all structural elements No default (Real) |
Ai |
Thermal expansion coefficient vector. No default (Real) |
TREF |
Reference temperature for the calculation of thermal loads. Data from the MAT2 entry is used directly, without adjustment of equivalent E, G, or NU values. Default = blank (Real or blank) |
GE |
Structural element damping coefficient. See comments 5 and 6. No default (Real) |
ST, SC, SS |
Stress limits in tension, compression and shear. Used for composite ply failure calculations. No default (Real) |
| 2. | The convention for the Gij in fields 3 through 8 are represented by the matrix relationship: |
| 3. | If this entry is referenced by the MID3 field (transverse shear) on the PSHELL, G13, G23, and G33 must be blank. |
| 4. | The long field format may be used. |
| 5. | To obtain the damping coefficient GE, multiply the critical damping ratio, C/C0, by 2.0. |
| 6. | TREF and GE are ignored, if a MAT2 entry is referenced by a PCOMP entry. |
| 7. | If a MAT2 card is pointed to by a MID4 on PSHELL, and has a material ID greater than 400,000,000, then the thermal membrane-bending coefficients A1, A2, and A12 have a modified interpretation, and represent [G]*[alpha], rather than [alpha]. Here, [G] is a matrix composed of G11, G22, …, G33. This is to maintain consistency with respective terms generated internally by the PCOMP card. |
| 8. | This card is represented as a material in HyperMesh. |
See Also:
Material Property Checks for MAT2
