Distributed Normal and Tangential tractions:

We want to find out the stress components at any point in the body and the displacement field due to stress components and at the boundary.

We will consider that the tractions acting on the body at a distance from the origin a as concentrated stress. Then we will consider the stress components at the location due to this concentrated stress.

(4.23)

Now integrating these stress components over , we obtain the net stresses due to distributed loads and . Thus we obtain,

(4.24)