SOLID278 is available in two forms:
Homogeneous (nonlayered) thermal solid (KEYOPT(3) = 0, the default) - see SOLID278 - 3D 8-Node Homogeneous Thermal Solid.
Layered thermal solid (KEYOPT(3) = 1) - see SOLID278 - 3D 8-Node Layered Thermal Solid.
Matrix or Vector | Shape Functions | Integration Points |
---|---|---|
Conductivity Matrix and Heat Generation Load Vector | Equation 11–227 | 2 x 2 x 2 |
Specific Heat Matrix | Equation 11–227. Matrix is diagonalized as described in Lumped Matrices | Same as conductivity matrix |
Convection Surface Matrix and Load Vector | Equation 11–227 specialized to the face | 2 x 2 |
Matrix or Vector | Shape Functions | Integration Points |
---|---|---|
Conductivity Matrix and Heat Generation Load Vector | Equation 11–227 | In-plane: |
Specific Heat Matrix | Equation 11–227. Matrix is diagonalized as described in Lumped Matrices | Same as conductivity matrix |
Convection Surface Matrix and Load Vector | Equation 11–227 specialized to the face | 2 x 2 |
Heat Flow describes the derivation of the element matrices and load vectors as well as heat flux evaluations for a general thermal analysis element. Mass Transport is discussed in Mass Transport (Advection) and Mass Transport (Advection) in the Thermal Analysis Guide. The Mass transport option is only available for KEYOPT(3) = 0 the homogeneous (nonlayered) form.