Terminology

Sizes

Alias Description
nnode number of nodes
ndim number of dimensions
nelem number of elements
nne number of nodes per element
tdim number of dimensions of a tensor

Arrays

Alias Description
dofval degrees of freedom
nodevec nodal vector
elemvec nodal vector stored per element
elemmat matrix stored per element
qscalar scalar stored per integration point
qtensor tensor stored per integration point

Names

Alias Description
coor nodal coordinates
conn connectivity

Elements

Alias Description
Tri3 2-d triangular element (3 nodes)
Quad4 2-d quadrilateral element (4 nodes)
Hex8 3-d hexahedral element (8 nodes)

Coordinates

  • Nodal coordinates: each node has one row
  • Shape [nnode, ndim]
  • Denoted: coor

Connectivity

  • Node numbers per element: each element has one row
  • Shape [nelem, nne]
  • Denoted: conn