These are the shape functions for the 2-D quadrilateral finite element.
N_{1,1}(x,y) |
N_{1,2}(x,y) |
N_{2,2}(x,y) |
The FE method is a numerical method to solve arbitrary PDEs. To achieve this objetive, it is a characteristic feature of the FE approach that the differential equations in question are first reformulated into an equivalent form, the so-called weak formulation. Thus, it is usual to talk about strong and weak forms. They are equivalent, but the weak form has some advantages:
Last modified 4/2/2000 by Juan de Lara (Juan.Lara@ii.uam.es, http://www.ii.uam.es/~jlara) need help for using this courses?.