An integral method to determine the mechanical behavior of materials in metal cutting

An integral Johnson-Cook model based approach has been presented to characterize the mechanical behavior of work materials in machining. The model parameters are determined by fitting the data from both quasi-static compression and machining tests. The approach has been validated by the case studies of quasi-static compression and machining tests of 6061-T6 aluminum, which the flow stress, strain, strain rate, and the temperature are calculated by the appropriate models. It is also confirmed that the compression data can be correlated with the cutting data. The developed approach is valid for machining with continuous chips at a variety of cutting speeds. In addition, the error sources to affect the accuracy of this approach are discussed. (C) 2003 Elsevier Science B.V. All rights reserved.