Matlab codes for Finite Element Analysis

1. Basic steps of finite element problem

1. Define a set of elements connected at nodes
2. For each element, compute stiffness matrix $\textbf{K^e}$, and force vector $\textbf{f^e}$
3. Assemble the contribution of all elements into the global system $\textbf{Ka=f}$
4. Modify the global system by imposing essential (displacements) boundary conditions
5. Solve the global system and obtain the global displacements $\textbf{a}$
6. For each element, evaluate the strains and stresses (post-processing)