13.279. SOLID279 - 3-D 20-Node Homogeneous/Layered Thermal Solid

SOLID279 is available in two forms:

Homogeneous (nonlayered) thermal solid (KEYOPT(3) = 0, the default) - see SOLID279 - 3-D 20-Node Homogeneous Thermal Solid.
Layered thermal solid (KEYOPT(3) > 0) - see SOLID279 - 3-D 20-Node Layered Thermal Solid.

Matrix or Vector	Geometry	Shape Functions	Integration Points
Conductivity Matrix and Heat Generation Load Vector	Brick	Equation 11–235	14
	Wedge	Equation 11–211	3 x 3
	Pyramid	Equation 11–195	2 x 2 x 2
	Tet	Equation 11–187	4
Specific Heat Matrix	Same as conductivity matrix.		Same as conductivity matrix
Convection Surface Matrix and Load Vector	Quad	Equation 11–91	3 x 3
Convection Surface Matrix and Load Vector	Triangle	Equation 11–63	6

Matrix or Vector	Geometry	Shape Functions	Integration Points
Conductivity Matrix and Heat Generation Load Vector	Brick	Equation 11–235	In-plane: 2 x 2 Thru-the-thickness: 1, 3, 5, 7, or 9 per layer Defaults to 3
	Wedge	Equation 11–211	3 x 3
	Pyramid	Equation 11–195	2 x 2 x 2
	Tet	Equation 11–187	4
Specific Heat Matrix	Same as conductivity matrix.		Same as conductivity matrix
Convection Surface Matrix and Load Vector	Quad	Equation 11–91	3 x 3
Convection Surface Matrix and Load Vector	Triangle	Equation 11–63	6