UNIAXIAL RATCHETING EXPERIMENT AND PREDICTION OF 16MNR STEEL

摘要

A series of experiments were performed on the uniaxial ratcheting deformation of 16MnR steel. The effects of stress amplitude and mean stress on the ratcheting were discussed under uniaxial asymmetrical stress cycling. It showed that ratcheting deformation increased with mean stress and stress amplitude increased. The modified model based on Ohno-Wang model by Chen and Jiao was used to predict ratcheting strain. The modified model predicts the uniaxial ratcheting of 16MnR steel well.