Use the three-noded bar element and find the axial displacement at the end of the rod sh...

Use the three-noded bar element and find the axial displacement at the end of the rod shown in Figure P10–8. Determine the stress at x = 0, x = L/2 and x = L. Let A =2 × 10^-4 m², E = 205 GPa, and L = 4 m. Hint: Use Eq. (10.5.22) for the element stiffness matrix.