Flow curve approximation using Avitzur's model for barreling compression test

Abstract

The combination of the Cylindrical Profile Model (CPM) and Avitzur's model is commonly used to determine flow stress curves in material testing using compression test. In this process, stress is corrected for friction using Avitzur's model and the average strain is calculated from CPM. This study proposes a method for estimating strain based on Avitzur's model. The presented case studies demonstrate the impact of this strain correction on the flow curves. The results show that increasing friction leads to higher strain values at the center of the sample due to barreling. The proposed method provides a more accurate interpretation of compression test results