The tilted punch under normal and shear load (with application to fretting tests)

The use of a tilted fretting fatigue pad in experimental investigations of fretting fatigue is discussed, and a concise, closed-form analysis of the resulting contact law, pressure distribution and partial slip regime found. The salient physical quantities controlling the size and characteristics of the contact are deduced. Preliminary tests using pads of this form have shown them to be very useful in applying carefully graded slip damage in a controlled way.