| OptFEM2DP1 Toolbox V1.2b3 Matlab/Octave Optimized P1-Lagrange Finite Element Method in 2D

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StiffAssemblingP1base.m File Reference

Assembly of the Stiffness Matrix by -Lagrange finite elements. More...

Go to the source code of this file.

## Functions
function R = | StiffAssemblingP1base (nq, nme, q, me, areas)
| Assembly of the Stiffness Matrix by -Lagrange finite elements.

## Detailed Description

Assembly of the Stiffness Matrix by -Lagrange finite elements.

- Basic version (see report).

Definition in file StiffAssemblingP1base.m.

## Function Documentation

function R = StiffAssemblingP1base | ( |  | nq,
|  |  | nme,
|  |  | q,
|  |  | me,
|  |  | areas
| ) |  |

Assembly of the Stiffness Matrix by -Lagrange finite elements.

- Basic version (see report).

The Stiffness Matrix is given by

where are -Lagrange basis functions.

Example

          Th=SquareMesh(10);
          R=StiffAssemblingP1base(Th.nq,Th.nme,Th.q,Th.me,Th.areas);

See Also
  ElemStiffMatP1

Copyright
  See License issues

Parameters

  nq | total number of nodes of the mesh, also denoted by .
  nme | total number of triangles, also denoted by .
  q | Array of vertices coordinates, array. is the -th coordinate of the -th vertex, and
  me | Connectivity array, array. is the storage index of the -th vertex of the -th triangle in the array , and .
  areas | Array of areas, array. areas(k) is the area of the -th triangle.

Return values

  R | Global stiffness matrix, sparse matrix.

Definition at line 17 of file StiffAssemblingP1base.m.