Modeling of ratcheting behavior under multiaxial cyclic loading

摘要: A two-surface plasticity theory is used to predict ratcheting strain under multiaxial loading. kinematic hardening rule that combines the Mroz and Ziegler rules employed along with plastic modulus given as an exponential function of distance between yield surface bounding surface. Model results are compared experimental data obtained on medium carbon steel proportional nonproportional axial-torsional The model predicts reasonably well behavior at relatively low cycles. Predictions overshoot actual strains high cycles, yet look favorable other found in literature.