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Modeling of ratcheting behavior under multiaxial cyclic loading. (English) Zbl 1064.74518
Summary: A two-surface plasticity theory is used to predict ratcheting strain under multiaxial loading. A kinematic hardening rule that combines the Mroz and Ziegler hardening rules is employed along with the plastic modulus given as an exponential function of the distance between the yield surface and the bounding surface. Model results are compared with experimental data obtained on medium carbon steel under proportional and nonproportional axial-torsional loading. The model predicts reasonably well experimental ratcheting behavior at relatively low cycles. Predictions overshoot the actual ratcheting strains at high cycles, yet the results look favorable compared with other data found in the literature.

MSC:
74C05 Small-strain, rate-independent theories of plasticity (including rigid-plastic and elasto-plastic materials)
74-05 Experimental work for problems pertaining to mechanics of deformable solids
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