On the Non-Uniform Deformation of Material in Axially Symmetric Compression Caused by Friction : Part 4, Experiments Concerning Compression of Hollow Cylinder

Abstract

In the metal working, friction force between tool surface and worked material gives large influence in the form of plastic deformation of it. Some kinds of experiments are performed in this report concerning non-uniform deformation of a hollow cylinder caused by friction on the interface in axial compression, in order to verify the theoretical results given in the previous report (part 3 of this series of research). Shape of bulges on both the inner and outer surfaces, load of compression distribution of normal pressure on the interface, etc. are measured in various conditions of lubrication, changing the shape of the hollow cylinder. Furthermore, measured values of friction coefficient agree with both the theoretical results by the finite element method and by Kudo's method.