Frictionless punch

The boundary conditions:

constant,	(5.3)

In equation 4.30 we can substitute for as

	(5.4)

Which results in the following expressions for the normal component of stress

	(5.5)

The constant C is estimated by

which gives	(5.6)

The pressure distribution is given as,

	(5.7)

Equation (5.7) shows that the pressure reaches a theoretically infinite value at the edge of the punch