Contact of two cylinders with their axes parallel to the y-coordinate:

Now we will proceed to investigate the pressure distribution when there is adhesion between the two contacting cylinders.

From equation10.11, the general form of the pressure distribution is obtained as,

So that the expression for normal stress can be written as,

	(10.15)

At the edge of the contact area, , the expression for stress can be approximated as,

	(10.16)

Here is called the stress intensity factor and is expressed as,

	(10.17)