Question $2$

$[10$ Marks$]$

The fixed$-$fixed bar shown in Fig. $2$ has axial forces applied at $150$ mm and $450$ mm $.$ Evaluate the following.

$($a$)$ Discretize the domain into four finite elements

$($b$)$ Assemble the global stiffness matrix

$($c$)$ write down the global displacement and force vector mentioning loads and constraints