1. Discretization#

1.1. Degrees of freedom#

Modeling

Degrees of Freedom (at each vertex node)

3D and 3D_ DIAG

TEMP: corresponds to the temperature

HYDR: corresponds to hydration

1.2. Support mesh for stiffness matrices#

The finite element support meshes can be tetrahedra, pyramids, prisms or hexahedra. The elements are iso-parametric.

Modeling

Mesh

Interpolation

Remarks

3D and 3D_ DIAG

TETRA4

Linear

3D

TETRA10

Quadratic

3D

PYRAM5

Linear

3D

PYRAM13

Quadratic

3D and 3D_ DIAG

PENTA6

Bi-linear

3D

PENTA15

Serendip

3D and 3D_ DIAG

HEXA8

Tri-linear

3D

HEXA20

Serendip

3D

HEXA27

Tri-Quadratic

1.3. Surface load support mesh#

Modeling

Mesh

Interpolation

Remarks

3D and 3D_ DIAG

TRIA3

Linear or

Bi-Linear

3D

TRIA6

Quadratic or

Serendip

3D and 3D_ DIAG

QUAD4

Bi-linear

3D

QUAD8

Serendip

3D

QUAD9

Quadratic