| Matrix or Vector | Geometry | Layer Shape Functions | Layer Integration Points |
|---|---|---|---|
| Conductivity Matrix, Heat Generation Load Vector, and Convection Surface Matrix and Load Vector | 3 unknowns per node per layer (KEYOPT(3) = 0) | In-Plane: Equation 11–79 | In-Plane: 2 x 2 |
| Thru Thickness: Equation 11–25 | Thru Thickness: 2 | ||
| 2 unknowns per node per layer (KEYOPT(3) = 1) | In-Plane: Equation 11–79 | In-Plane: 2 x 2 | |
| Thru Thickness: Equation 11–13 | Thru Thickness: 1 | ||
| 1 unknown per node per layer (KEYOPT(3) = 2) | In-Plane: Equation 11–79 | In-Plane: 2 x 2 | |
| Thru Thickness: Constant | Thru Thickness: 1 | ||
| Specific Heat Matrix | Same as conductivity matrix. Matrix is diagonalized as described in Lumped Matrices | Same as conductivity matrix | |
Heat Flow describes the derivation of the thermal element matrices and load vectors as well as heat flux evaluations.