Determination of flow stress properties of machinable materials with help of simple compression and orthogonal machining test

This paper describes a possible method for predicting values of orthogonal metal cutting properties such as shear angle, cutting force etc., on a basi s of the well known Hollomon equation, using a simple compression test in o rder to avoid any cutting experiments. There are two possibilities: the how stress properties can be obtained from an independent material test; or by measuring the active and passive cutting forces from the orthogonal machin ing test itself. This paper is concerned with a material how stress equatio n, including the effects of strain (epsilon), strain rate (<(<epsilon>)over dot>) and temperature (T), which is one of the five equations that have to be solved in simulation analysis with the finite element method. In findin g a solution for those five equations, it is necessary to dispose of flow s tress properties by rearrangement of the Hollomon equation and so making it usable For cutting process investigation. The rearrangement is described i n this paper. (C) 2001 Elsevier Science Ltd. All rights reserved.