Correlation of Cyclic Stress-Strain Relations between Cyclic Bending and Cyclic Torsion by Means of Distributed Element Model

Abstract

The distributed element model to analyze the cyclic stress-strain relation had been proposed by the authors. In the previous paper, the validity of the model was confirmed in the cyclic torsion tests as well as in the cyclic bending tests under a constant strain amplitude.
In this paper, the correlation of the stress-strain relations between cyclic bending and cyclic torsion is examined on the basis of the model. The analysis is made with two yield functions; von Mises and Freudenthal. Through the comparison of analyses and experimental results, it is shown that the Freudenthal's yield function is suitable for the analysis of the cyclic stress-strain relation.