EFFECT OF FRICTION AND CAVITY DEPTH ON THE ELASTIC INDENTATION OF A CYLINDRICAL ROD

Using finite element analysis, the elastic displacement of a rigid cyl indrical rod pushed by an axial load into an existing cavity of the sa me diameter as the rod located in the surface of a half space was stud ied. It was found that such displacement is proportional to the applie d load and decreases with increasing depth of the cavity. It is the la rgest for the slip condition over all the contact surfaces and the sma llest for the stick condition over the same surfaces. Also for the sam e load, the maximum von Mises stress under the punch decreases with in creasing depth of the cavity. If not glued to the punch, both the bott om and the lateral surfaces of the cavity are in contact with the punc h during deformation.